21
様式2 事 業 名 : 都道府県名: 山梨 施行箇所 : (単位:千円) 事業費 現在価値額 事業費 現在価値額 S33 × 8.6464 H31 416,140 × 0.7903 328,875 S34 11,600 × 8.3138 96,440 H32 416,140 × 0.7599 316,225 S35 33,262 × 7.9941 265,900 H33 281,000 × 0.7307 205,327 S36 18,000 × 7.6866 138,359 H34 281,000 × 0.7026 197,431 S37 22,000 × 7.3910 162,602 H35 0 × 0.6756 0 S38 35,000 × 7.1067 248,735 H36 0 × 0.6496 0 S39 80,000 × 6.8333 546,664 H37 0 × 0.6246 0 S40 114,199 × 6.5705 750,345 H38 0 × 0.6006 0 S41 128,543 × 6.3178 812,109 H39 0 × 0.5775 0 S42 145,998 × 6.0748 886,909 H40 0 × 0.5553 0 S43 147,000 × 5.8412 858,656 H41 0 × 0.5339 0 S44 167,000 × 5.6165 937,956 H42 0 × 0.5134 0 S45 166,350 × 5.4005 898,373 H43 0 × 0.4936 0 S46 203,000 × 5.1928 1,054,138 H44 0 × 0.4746 0 S47 229,999 × 4.9931 1,148,408 H45 0 × 0.4564 0 S48 268,999 × 4.8010 1,291,464 H46 0 × 0.4388 0 S49 243,244 × 4.6164 1,122,912 H47 0 × 0.4220 0 S50 271,000 × 4.4388 1,202,915 H48 0 × 0.4057 0 S51 310,100 × 4.2681 1,323,538 H49 0 × 0.3901 0 S52 343,100 × 4.1039 1,408,048 H50 0 × 0.3751 0 S53 475,596 × 3.9461 1,876,749 H51 0 × 0.3607 0 S54 556,199 × 3.7943 2,110,386 H52 0 × 0.3468 0 S55 448,214 × 3.6484 1,635,264 H53 0 × 0.3335 0 S56 590,581 × 3.5081 2,071,817 H54 0 × 0.3207 0 S57 425,970 × 3.3731 1,436,839 H55 0 × 0.3083 0 S58 340,297 × 3.2434 1,103,719 H56 0 × 0.2965 0 S59 390,999 × 3.1187 1,219,409 H57 0 × 0.2851 0 S60 473,300 × 2.9987 1,419,285 H58 0 × 0.2741 0 S61 480,900 × 2.8834 1,386,627 H59 0 × 0.2636 0 S62 667,218 × 2.7725 1,849,862 H60 0 × 0.2534 0 S63 598,098 × 2.6658 1,594,410 H61 0 × 0.2437 0 H1 597,596 × 2.5633 1,531,818 H62 0 × 0.2343 0 H2 585,700 × 2.4647 1,443,575 H63 0 × 0.2253 0 H3 562,300 × 2.3699 1,332,595 H64 0 × 0.2166 0 H4 553,600 × 2.2788 1,261,544 H65 0 × 0.2083 0 H5 568,878 × 2.1911 1,246,469 H66 0 × 0.2003 0 H6 691,729 × 2.1068 1,457,335 H67 0 × 0.1926 0 H7 622,964 × 2.0258 1,262,000 H68 0 × 0.1852 0 H8 559,983 × 1.9479 1,090,791 H69 0 × 0.1780 0 H9 578,000 × 1.8730 1,082,594 H70 0 × 0.1712 0 H10 687,398 × 1.8009 1,237,935 H71 0 × 0.1646 0 H11 842,879 × 1.7317 1,459,614 H72 0 × 0.1583 0 H12 735,066 × 1.6651 1,223,958 H73 0 × 0.1522 0 H13 660,667 × 1.6010 1,057,728 H74 0 × 0.1463 0 H14 523,217 × 1.5395 805,493 H75 0 × 0.1407 0 H15 454,929 × 1.4802 673,386 H76 0 × 0.1353 0 H16 404,330 × 1.4233 575,483 H77 0 × 0.1301 0 H17 366,497 × 1.3686 501,588 H78 0 × 0.1251 0 H18 378,483 × 1.3159 498,046 H79 0 × 0.1203 0 H19 556,987 × 1.2653 704,756 H80 0 × 0.1157 0 H20 513,655 × 1.2167 624,964 H81 0 × 0.1112 0 H21 599,803 × 1.1699 701,710 H82 0 × 0.1069 0 H22 407,358 × 1.1249 458,237 H83 0 × 0.1028 0 H23 408,704 × 1.0816 442,054 H84 0 × 0.0989 0 H24 451,843 × 1.0400 469,917 H25 416,140 × 1.0000 416,140 H26 416,140 × 0.9615 400,119 H27 416,140 × 0.9246 384,763 H28 416,140 × 0.8890 369,948 H29 416,140 × 0.8548 355,716 H30 416,140 × 0.8219 342,025 C= 千円 59,318,997 59,318,997 事 業 費 集 計 表 (治山事業) 年度 年度 割引率 割引率 野呂川地区 民有林直轄治山事業

事 業 費 集 計 表 - maff.go.jp · 2013. 8. 30. · 様式2 事 業 名 : 都道府県名:山梨 施行箇所 : (単位:千円) 事業費 現在価値額 事業費

  • Upload
    others

  • View
    3

  • Download
    0

Embed Size (px)

Citation preview

  • 様式2

    事 業 名 : 都道府県名: 山梨施行箇所 :

    (単位:千円)

    事業費 現在価値額 事業費 現在価値額S33 × 8.6464 H31 416,140 × 0.7903 328,875S34 11,600 × 8.3138 96,440 H32 416,140 × 0.7599 316,225S35 33,262 × 7.9941 265,900 H33 281,000 × 0.7307 205,327S36 18,000 × 7.6866 138,359 H34 281,000 × 0.7026 197,431S37 22,000 × 7.3910 162,602 H35 0 × 0.6756 0S38 35,000 × 7.1067 248,735 H36 0 × 0.6496 0S39 80,000 × 6.8333 546,664 H37 0 × 0.6246 0S40 114,199 × 6.5705 750,345 H38 0 × 0.6006 0S41 128,543 × 6.3178 812,109 H39 0 × 0.5775 0S42 145,998 × 6.0748 886,909 H40 0 × 0.5553 0S43 147,000 × 5.8412 858,656 H41 0 × 0.5339 0S44 167,000 × 5.6165 937,956 H42 0 × 0.5134 0S45 166,350 × 5.4005 898,373 H43 0 × 0.4936 0S46 203,000 × 5.1928 1,054,138 H44 0 × 0.4746 0S47 229,999 × 4.9931 1,148,408 H45 0 × 0.4564 0S48 268,999 × 4.8010 1,291,464 H46 0 × 0.4388 0S49 243,244 × 4.6164 1,122,912 H47 0 × 0.4220 0S50 271,000 × 4.4388 1,202,915 H48 0 × 0.4057 0S51 310,100 × 4.2681 1,323,538 H49 0 × 0.3901 0S52 343,100 × 4.1039 1,408,048 H50 0 × 0.3751 0S53 475,596 × 3.9461 1,876,749 H51 0 × 0.3607 0S54 556,199 × 3.7943 2,110,386 H52 0 × 0.3468 0S55 448,214 × 3.6484 1,635,264 H53 0 × 0.3335 0S56 590,581 × 3.5081 2,071,817 H54 0 × 0.3207 0S57 425,970 × 3.3731 1,436,839 H55 0 × 0.3083 0S58 340,297 × 3.2434 1,103,719 H56 0 × 0.2965 0S59 390,999 × 3.1187 1,219,409 H57 0 × 0.2851 0S60 473,300 × 2.9987 1,419,285 H58 0 × 0.2741 0S61 480,900 × 2.8834 1,386,627 H59 0 × 0.2636 0S62 667,218 × 2.7725 1,849,862 H60 0 × 0.2534 0S63 598,098 × 2.6658 1,594,410 H61 0 × 0.2437 0H1 597,596 × 2.5633 1,531,818 H62 0 × 0.2343 0H2 585,700 × 2.4647 1,443,575 H63 0 × 0.2253 0H3 562,300 × 2.3699 1,332,595 H64 0 × 0.2166 0H4 553,600 × 2.2788 1,261,544 H65 0 × 0.2083 0H5 568,878 × 2.1911 1,246,469 H66 0 × 0.2003 0H6 691,729 × 2.1068 1,457,335 H67 0 × 0.1926 0H7 622,964 × 2.0258 1,262,000 H68 0 × 0.1852 0H8 559,983 × 1.9479 1,090,791 H69 0 × 0.1780 0H9 578,000 × 1.8730 1,082,594 H70 0 × 0.1712 0

    H10 687,398 × 1.8009 1,237,935 H71 0 × 0.1646 0H11 842,879 × 1.7317 1,459,614 H72 0 × 0.1583 0H12 735,066 × 1.6651 1,223,958 H73 0 × 0.1522 0H13 660,667 × 1.6010 1,057,728 H74 0 × 0.1463 0H14 523,217 × 1.5395 805,493 H75 0 × 0.1407 0H15 454,929 × 1.4802 673,386 H76 0 × 0.1353 0H16 404,330 × 1.4233 575,483 H77 0 × 0.1301 0H17 366,497 × 1.3686 501,588 H78 0 × 0.1251 0H18 378,483 × 1.3159 498,046 H79 0 × 0.1203 0H19 556,987 × 1.2653 704,756 H80 0 × 0.1157 0H20 513,655 × 1.2167 624,964 H81 0 × 0.1112 0H21 599,803 × 1.1699 701,710 H82 0 × 0.1069 0H22 407,358 × 1.1249 458,237 H83 0 × 0.1028 0H23 408,704 × 1.0816 442,054 H84 0 × 0.0989 0H24 451,843 × 1.0400 469,917H25 416,140 × 1.0000 416,140H26 416,140 × 0.9615 400,119H27 416,140 × 0.9246 384,763H28 416,140 × 0.8890 369,948H29 416,140 × 0.8548 355,716

    H30 416,140 × 0.8219 342,025 合 計C= 千円

    59,318,99759,318,997

    事 業 費 集 計 表(治山事業)

    年度事 業 費

    年度事 業 費

    割引率 割引率

    野呂川地区民有林直轄治山事業

  • 水源涵養かん

    便益 洪水防止便益  事業効果区域

    T-1 Y

    t tt = 1 t =T

    U: 治水ダムの単位雨量流出量当たりの年間減価償却費(円/㎥/sec)出典:「ダム年鑑2012」

    f1: 事業実施前の流出係数 浸透能中 急出典:「治山設計」(山口伊佐夫著,1979)

    f2: 事業実施後、T年経過後の流出係数 浸透能中 急出典:「治山設計」(山口伊佐夫著,1979)

    T: 事業実施後、流出係数が安定するのに必要な年数

    α : 100年確率時雨量(㎜/h)H24野呂川地区全体計画調査データによる

    A: 事業対象区域面積(ha)

    360: 単位合わせのための調整値

    Y: 評価期間

    年度 社会的割引率 事業対象区域面積 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.14 0.01 2 171960 7.9941 0.51 0.04 8 641961 7.6866 0.71 0.09 17 1311962 7.3910 0.94 0.16 30 2221963 7.1067 1.34 0.25 47 3341964 6.8333 2.23 0.39 73 4991965 6.5705 3.53 0.64 120 7881966 6.3178 4.97 0.96 180 1,1371967 6.0748 6.61 1.39 261 1,5861968 5.8412 8.25 1.96 368 2,1501969 5.6165 10.15 2.63 494 2,7751970 5.4005 12.02 3.42 642 3,4671971 5.1928 14.29 4.39 824 4,2791972 4.9931 16.88 5.50 1,033 5,1581973 4.8010 19.90 6.83 1,282 6,1551974 4.6164 22.64 8.33 1,564 7,2201975 4.4388 25.69 10.00 1,877 8,3321976 4.2681 29.17 11.90 2,234 9,5351977 4.1039 33.03 14.05 2,638 10,8261978 3.9461 38.39 16.51 3,099 12,2291979 3.7943 44.64 19.34 3,631 13,7771980 3.6484 49.71 22.41 4,207 15,3491981 3.5081 56.33 25.85 4,853 17,0251982 3.3731 61.14 29.47 5,532 18,6601983 3.2434 64.97 33.26 6,244 20,2521984 3.1187 69.38 37.21 6,986 21,7871985 2.9987 74.71 41.42 7,776 23,3181986 2.8834 80.12 45.77 8,593 24,7771987 2.7725 87.61 50.49 9,479 26,2811988 2.6658 94.35 55.46 10,412 27,7561989 2.5633 101.09 60.70 11,395 29,2091990 2.4647 107.66 66.16 12,420 30,6121991 2.3699 113.99 71.82 13,483 31,9531992 2.2788 120.24 77.62 14,572 33,2071993 2.1911 126.63 83.53 15,681 34,3591994 2.1068 134.40 89.49 16,800 35,3941995 2.0258 141.43 95.62 17,951 36,3651996 1.9479 147.71 101.67 19,087 37,1801997 1.8730 154.22 107.89 20,255 37,9381998 1.8009 161.97 114.37 21,471 38,6671999 1.7317 171.44 121.15 22,744 39,3862000 1.6651 179.73 128.17 24,062 40,0662001 1.6010 187.16 135.31 25,402 40,6692002 1.5395 193.03 142.32 26,718 41,1322003 1.4802 198.16 149.27 28,023 41,4802004 1.4233 202.71 156.03 29,292 41,6912005 1.3686 206.83 162.67 30,539 41,7962006 1.3159 211.09 169.11 31,748 41,7772007 1.2653 217.37 175.58 32,962 41,7072008 1.2167 223.16 182.02 34,171 41,5762009 1.1699 229.90 188.39 35,367 41,3762010 1.1249 234.48 194.61 36,535 41,0982011 1.0816 239.09 200.68 37,674 40,7482012 1.0400 244.16 206.68 38,801 40,3532013 1.0000 248.85 212.48 39,890 39,8902014 0.9615 253.54 217.96 40,918 39,3432015 0.9246 258.20 223.20 41,902 38,7432016 0.8890 262.89 228.22 42,844 38,0882017 0.8548 267.58 233.20 43,779 37,4222018 0.8219 272.24 238.15 44,709 36,7462019 0.7903 276.93 243.08 45,634 36,0652020 0.7599 281.59 248.06 46,569 35,388

    2,377,675

    t 1 (f1-f2)×α ×A×UB= Σ + Σ ×

     T×(1+i)

    15

    128

    0.14 ~ 287.95

    114

    (1+i) 360

    3,520,000

    要整備森林(裸地) 0.80

    要整備森林(疎林) 0.65

  • 2021 0.7307 284.76 252.96 47,489 34,7002022 0.7026 287.95 257.69 48,377 33,9902023 0.6756 287.95 262.01 49,188 33,2312024 0.6496 287.95 265.87 49,913 32,4232025 0.6246 287.95 269.44 50,583 31,5942026 0.6006 287.95 272.70 51,195 30,7482027 0.5775 287.95 275.63 51,745 29,8832028 0.5553 287.95 278.23 52,233 29,0052029 0.5339 287.95 280.52 52,663 28,1172030 0.5134 287.95 282.50 53,035 27,2282031 0.4936 287.95 284.17 53,348 26,3332032 0.4746 287.95 285.54 53,605 25,4412033 0.4564 287.95 286.58 53,801 24,5552034 0.4388 287.95 287.31 53,938 23,6682035 0.4220 287.95 287.74 54,018 22,7962036 0.4057 287.95 287.95 54,058 21,9312037 0.3901 287.95 287.95 54,058 21,0882038 0.3751 287.95 287.95 54,058 20,2772039 0.3607 287.95 287.95 54,058 19,4992040 0.3468 287.95 287.95 54,058 18,7472041 0.3335 287.95 287.95 54,058 18,0282042 0.3207 287.95 287.95 54,058 17,3362043 0.3083 287.95 287.95 54,058 16,6662044 0.2965 287.95 287.95 54,058 16,0282045 0.2851 287.95 287.95 54,058 15,4122046 0.2741 287.95 287.95 54,058 14,8172047 0.2636 287.95 287.95 54,058 14,2502048 0.2534 287.95 287.95 54,058 13,6982049 0.2437 287.95 287.95 54,058 13,1742050 0.2343 287.95 287.95 54,058 12,6662051 0.2253 287.95 287.95 54,058 12,1792052 0.2166 287.95 287.95 54,058 11,7092053 0.2083 287.95 287.95 54,058 11,2602054 0.2003 287.95 287.95 54,058 10,8282055 0.1926 287.95 287.95 54,058 10,4122056 0.1852 287.95 287.95 54,058 10,0122057 0.1780 287.95 287.95 54,058 9,6222058 0.1712 287.95 287.95 54,058 9,2552059 0.1646 287.95 287.95 54,058 8,8982060 0.1583 287.95 287.95 54,058 8,5572061 0.1522 287.95 287.95 54,058 8,2282062 0.1463 287.95 287.95 54,058 7,9092063 0.1407 287.95 287.95 54,058 7,6062064 0.1353 287.95 287.95 54,058 7,3142065 0.1301 287.95 287.95 54,058 7,0332066 0.1251 287.95 287.95 54,058 6,7632067 0.1203 287.95 287.95 54,058 6,5032068 0.1157 287.95 287.95 54,058 6,2552069 0.1112 287.95 287.95 54,058 6,0112070 0.1069 287.95 287.95 54,058 5,7792071 0.1028 287.95 287.95 54,058 5,5572072 0.0989 287.95 287.95 54,058 5,346

    合計 2,377,675

  • 水源涵養かん

    便益 洪水防止便益  保全効果区域

    tt = 1

    U: 治水ダムの単位雨量流出量当たりの年間減価償却費(円/㎥/sec)出典:「ダム年鑑2012」

    f1: 保全効果区域において事業を実施しない場合の将来の流出係数浸透能中 急出典:「治山設計」(山口伊佐夫著,1979)

    f2: 保全効果区域内の現在の流出係数 浸透能中 急出典:「治山設計」(山口伊佐夫著,1979)

    α : 100年確率時雨量(㎜/h)H24野呂川地区全体計画調査データによる

    A: 保全効果区域面積(ha)

    360: 単位合わせのための調整値

    Y: 評価期間

    年度 社会的割引率 t/Y 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.01 0.77 2 171960 7.9941 0.02 2.98 16 1281961 7.6866 0.03 4.17 34 2611962 7.3910 0.04 5.63 62 4581963 7.1067 0.04 7.96 109 7751964 6.8333 0.05 13.27 218 1,4901965 6.5705 0.06 20.85 401 2,6351966 6.3178 0.07 29.39 646 4,0811967 6.0748 0.08 39.08 965 5,8621968 5.8412 0.09 48.84 1,340 7,8271969 5.6165 0.10 59.93 1,810 10,1661970 5.4005 0.11 70.97 2,338 12,6261971 5.1928 0.11 84.45 3,012 15,6411972 4.9931 0.12 99.72 3,832 19,1341973 4.8010 0.13 117.58 4,841 23,2421974 4.6164 0.14 133.73 5,875 27,1211975 4.4388 0.15 151.72 7,078 31,4181976 4.2681 0.16 172.31 8,513 36,3341977 4.1039 0.17 195.09 10,176 41,7611978 3.9461 0.18 226.67 12,440 49,0891979 3.7943 0.18 263.60 15,192 57,6431980 3.6484 0.19 293.36 17,715 64,6311981 3.5081 0.20 332.57 20,999 73,6671982 3.3731 0.21 360.85 23,767 80,1681983 3.2434 0.22 383.45 26,311 85,3371984 3.1187 0.23 409.41 29,220 91,1281985 2.9987 0.24 440.83 32,662 97,9441986 2.8834 0.25 472.76 36,329 104,7511987 2.7725 0.25 517.06 41,157 114,1081988 2.6658 0.26 556.77 45,851 122,2301989 2.5633 0.27 596.45 50,743 130,0701990 2.4647 0.28 635.33 55,800 137,5301991 2.3699 0.29 672.67 60,931 144,4001992 2.2788 0.30 709.42 66,191 150,8361993 2.1911 0.31 747.19 71,773 157,2621994 2.1068 0.32 793.12 78,368 165,1061995 2.0258 0.32 834.48 84,753 171,6931996 1.9479 0.33 871.66 90,902 177,0681997 1.8730 0.34 910.04 97,410 182,4491998 1.8009 0.35 955.68 104,927 188,9631999 1.7317 0.36 1,011.64 113,825 197,1112000 1.6651 0.37 1,060.44 122,235 203,5332001 1.6010 0.38 1,104.31 130,333 208,6632002 1.5395 0.39 1,139.05 137,569 211,7872003 1.4802 0.39 1,169.25 144,399 213,7392004 1.4233 0.40 1,196.10 151,008 214,9302005 1.3686 0.41 1,220.43 157,441 215,4742006 1.3159 0.42 1,245.56 164,112 215,9552007 1.2653 0.43 1,282.54 172,476 218,2342008 1.2167 0.44 1,316.65 180,688 219,8432009 1.1699 0.45 1,356.47 189,888 222,1502010 1.1249 0.46 1,383.52 197,440 222,1002011 1.0816 0.46 1,410.65 205,196 221,9402012 1.0400 0.47 1,440.65 213,527 222,0682013 1.0000 0.48 1,468.28 221,665 221,6652014 0.9615 0.49 1,495.91 229,908 221,0572015 0.9246 0.50 1,523.54 238,349 220,3772016 0.8890 0.51 1,551.17 246,943 219,5322017 0.8548 0.52 1,578.80 255,639 218,5202018 0.8219 0.53 1,606.43 264,536 217,4222019 0.7903 0.54 1,634.06 273,586 216,2152020 0.7599 0.54 1,661.69 282,787 214,8902021 0.7307 0.55 1,680.34 290,535 212,2942022 0.7026 0.56 1,699.00 298,439 209,683

    3,520,000

    13,724,404

    ( f 1- f 2) × t × α × A × UB= Σ

    Y×360×(1+i)

    114

    要整備森林(裸地) 0.80

    整備済森林 0.55

    128

    1,699.00

  • 2023 0.6756 0.57 1,699.00 303,117 204,7862024 0.6496 0.58 1,699.00 307,742 199,9092025 0.6246 0.59 1,699.00 312,420 195,1382026 0.6006 0.60 1,699.00 317,098 190,4492027 0.5775 0.61 1,699.00 321,777 185,8262028 0.5553 0.61 1,699.00 326,401 181,2502029 0.5339 0.62 1,699.00 331,079 176,7632030 0.5134 0.63 1,699.00 335,758 172,3782031 0.4936 0.64 1,699.00 340,436 168,0392032 0.4746 0.65 1,699.00 345,061 163,7662033 0.4564 0.66 1,699.00 349,739 159,6212034 0.4388 0.67 1,699.00 354,417 155,5182035 0.4220 0.68 1,699.00 359,042 151,5162036 0.4057 0.68 1,699.00 363,720 147,5612037 0.3901 0.69 1,699.00 368,398 143,7122038 0.3751 0.70 1,699.00 373,076 139,9412039 0.3607 0.71 1,699.00 377,701 136,2372040 0.3468 0.72 1,699.00 382,379 132,6092041 0.3335 0.73 1,699.00 387,057 129,0842042 0.3207 0.74 1,699.00 391,682 125,6122043 0.3083 0.75 1,699.00 396,360 122,1982044 0.2965 0.75 1,699.00 401,038 118,9082045 0.2851 0.76 1,699.00 405,716 115,6702046 0.2741 0.77 1,699.00 410,341 112,4742047 0.2636 0.78 1,699.00 415,019 109,3992048 0.2534 0.79 1,699.00 419,697 106,3512049 0.2437 0.80 1,699.00 424,322 103,4072050 0.2343 0.81 1,699.00 429,000 100,5152051 0.2253 0.82 1,699.00 433,678 97,7082052 0.2166 0.82 1,699.00 438,356 94,9482053 0.2083 0.83 1,699.00 442,981 92,2732054 0.2003 0.84 1,699.00 447,659 89,6662055 0.1926 0.85 1,699.00 452,337 87,1202056 0.1852 0.86 1,699.00 456,962 84,6292057 0.1780 0.87 1,699.00 461,640 82,1722058 0.1712 0.88 1,699.00 466,318 79,8342059 0.1646 0.89 1,699.00 470,996 77,5262060 0.1583 0.89 1,699.00 475,621 75,2912061 0.1522 0.90 1,699.00 480,299 73,1022062 0.1463 0.91 1,699.00 484,977 70,9522063 0.1407 0.92 1,699.00 489,655 68,8942064 0.1353 0.93 1,699.00 494,280 66,8762065 0.1301 0.94 1,699.00 498,958 64,9142066 0.1251 0.95 1,699.00 503,636 63,0052067 0.1203 0.96 1,699.00 508,261 61,1442068 0.1157 0.96 1,699.00 512,939 59,3472069 0.1112 0.97 1,699.00 517,617 57,5592070 0.1069 0.98 1,699.00 522,295 55,8332071 0.1028 0.99 1,699.00 526,920 54,1672072 0.0989 1.00 1,699.00 531,598 52,575

    合計 13,724,404

  • 水源涵養かん

    便益 流域貯水便益  事業効果区域

    T-1 Y

    t tt = 1 t =T

    A: 事業対象区域面積(ha)

    P: 年間平均降雨量(mm/年)H24野呂川地区全体計画調査データによる

    D1: 事業実施前の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    D2: 事業実施後、T年経過後の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    T: 事業実施後、流出係数が安定するのに必要な年数

    U: 開発流量当りの利水ダム年間減価償却費(円/m3/S)出典:「ダム年鑑2012」

    Y: 評価期間

    10: 単位合わせのための調整値

    365: 1年間の日数

    86400: 1日の秒数

    年度 社会的割引率 事業対象区域面積 事業効果面積 効果額 現在価値化1,958 8.64641,959 8.3138 0.14 0.01 0 01,960 7.9941 0.51 0.04 2 161,961 7.6866 0.71 0.09 4 311,962 7.3910 0.94 0.16 7 521,963 7.1067 1.34 0.25 11 781,964 6.8333 2.23 0.39 18 1231,965 6.5705 3.53 0.64 29 1911,966 6.3178 4.97 0.96 44 2781,967 6.0748 6.61 1.39 63 3831,968 5.8412 8.25 1.96 89 5201,969 5.6165 10.15 2.63 120 6741,970 5.4005 12.02 3.42 156 8421,971 5.1928 14.29 4.39 200 1,0391,972 4.9931 16.88 5.50 251 1,2531,973 4.8010 19.90 6.83 311 1,4931,974 4.6164 22.64 8.33 380 1,7541,975 4.4388 25.69 10.00 456 2,0241,976 4.2681 29.17 11.90 543 2,3181,977 4.1039 33.03 14.05 641 2,6311,978 3.9461 38.39 16.51 753 2,9711,979 3.7943 44.64 19.34 882 3,3471,980 3.6484 49.71 22.41 1,022 3,7291,981 3.5081 56.33 25.85 1,179 4,1361,982 3.3731 61.14 29.47 1,344 4,5331,983 3.2434 64.97 33.26 1,517 4,9201,984 3.1187 69.38 37.21 1,697 5,2921,985 2.9987 74.71 41.42 1,889 5,6651,986 2.8834 80.12 45.77 2,087 6,0181,987 2.7725 87.61 50.49 2,302 6,3821,988 2.6658 94.35 55.46 2,529 6,7421,989 2.5633 101.09 60.70 2,768 7,0951,990 2.4647 107.66 66.16 3,017 7,4361,991 2.3699 113.99 71.82 3,275 7,7611,992 2.2788 120.24 77.62 3,540 8,0671,993 2.1911 126.63 83.53 3,809 8,3461,994 2.1068 134.40 89.49 4,081 8,5981,995 2.0258 141.43 95.62 4,361 8,8351,996 1.9479 147.71 101.67 4,636 9,0301,997 1.8730 154.22 107.89 4,920 9,2151,998 1.8009 161.97 114.37 5,216 9,3931,999 1.7317 171.44 121.15 5,525 9,5682,000 1.6651 179.73 128.17 5,845 9,7332,001 1.6010 187.16 135.31 6,171 9,8802,002 1.5395 193.03 142.32 6,490 9,9912,003 1.4802 198.16 149.27 6,807 10,0762,004 1.4233 202.71 156.03 7,115 10,1272,005 1.3686 206.83 162.67 7,418 10,1522,006 1.3159 211.09 169.11 7,712 10,1482,007 1.2653 217.37 175.58 8,007 10,1312,008 1.2167 223.16 182.02 8,301 10,1002,009 1.1699 229.90 188.39 8,591 10,0512,010 1.1249 234.48 194.61 8,875 9,9832,011 1.0816 239.09 200.68 9,152 9,8992,012 1.0400 244.16 206.68 9,425 9,8022,013 1.0000 248.85 212.48 9,690 9,6902,014 0.9615 253.54 217.96 9,940 9,5572,015 0.9246 258.20 223.20 10,179 9,4122,016 0.8890 262.89 228.22 10,408 9,253

    577,554

    t 1 (D2-D1)×A×P×U×10B= Σ + Σ ×

     T×(1+i)

    86,400

    (1+i) 365×86400

    0.14 ~ 287.95

    2,771

    0.51

    0.56

    15

    1,038,000,000

    114

    10

    365

  • 2,017 0.8548 267.58 233.20 10,635 9,0912,018 0.8219 272.24 238.15 10,860 8,9262,019 0.7903 276.93 243.08 11,085 8,7602,020 0.7599 281.59 248.06 11,312 8,5962,021 0.7307 284.76 252.96 11,536 8,4292,022 0.7026 287.95 257.69 11,751 8,2562,023 0.6756 287.95 262.01 11,948 8,0722,024 0.6496 287.95 265.87 12,124 7,8762,025 0.6246 287.95 269.44 12,287 7,6742,026 0.6006 287.95 272.70 12,436 7,4692,027 0.5775 287.95 275.63 12,570 7,2592,028 0.5553 287.95 278.23 12,688 7,0462,029 0.5339 287.95 280.52 12,793 6,8302,030 0.5134 287.95 282.50 12,883 6,6142,031 0.4936 287.95 284.17 12,959 6,3972,032 0.4746 287.95 285.54 13,021 6,1802,033 0.4564 287.95 286.58 13,069 5,9652,034 0.4388 287.95 287.31 13,102 5,7492,035 0.4220 287.95 287.74 13,122 5,5372,036 0.4057 287.95 287.95 13,131 5,3272,037 0.3901 287.95 287.95 13,131 5,1222,038 0.3751 287.95 287.95 13,131 4,9252,039 0.3607 287.95 287.95 13,131 4,7362,040 0.3468 287.95 287.95 13,131 4,5542,041 0.3335 287.95 287.95 13,131 4,3792,042 0.3207 287.95 287.95 13,131 4,2112,043 0.3083 287.95 287.95 13,131 4,0482,044 0.2965 287.95 287.95 13,131 3,8932,045 0.2851 287.95 287.95 13,131 3,7442,046 0.2741 287.95 287.95 13,131 3,5992,047 0.2636 287.95 287.95 13,131 3,4612,048 0.2534 287.95 287.95 13,131 3,3272,049 0.2437 287.95 287.95 13,131 3,2002,050 0.2343 287.95 287.95 13,131 3,0772,051 0.2253 287.95 287.95 13,131 2,9582,052 0.2166 287.95 287.95 13,131 2,8442,053 0.2083 287.95 287.95 13,131 2,7352,054 0.2003 287.95 287.95 13,131 2,6302,055 0.1926 287.95 287.95 13,131 2,5292,056 0.1852 287.95 287.95 13,131 2,4322,057 0.1780 287.95 287.95 13,131 2,3372,058 0.1712 287.95 287.95 13,131 2,2482,059 0.1646 287.95 287.95 13,131 2,1612,060 0.1583 287.95 287.95 13,131 2,0792,061 0.1522 287.95 287.95 13,131 1,9992,062 0.1463 287.95 287.95 13,131 1,9212,063 0.1407 287.95 287.95 13,131 1,8482,064 0.1353 287.95 287.95 13,131 1,7772,065 0.1301 287.95 287.95 13,131 1,7082,066 0.1251 287.95 287.95 13,131 1,6432,067 0.1203 287.95 287.95 13,131 1,5802,068 0.1157 287.95 287.95 13,131 1,5192,069 0.1112 287.95 287.95 13,131 1,4602,070 0.1069 287.95 287.95 13,131 1,4042,071 0.1028 287.95 287.95 13,131 1,3502,072 0.0989 287.95 287.95 13,131 1,299

    合計 577,554

  • 水源涵養かん

    便益 流域貯水便益  保全効果区域

    tt = 1

    A: 保全効果区域面積(ha)

    P: 年間平均降雨量(mm/年)H24野呂川地区全体計画調査データによる

    D1: 保全効果区域を放置した場合に想定される将来の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    D2: 保全効果区域内の現在の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    U: 開発流量当りの利水ダム年間減価償却費(円/m3/S)出典:「ダム年鑑2012」

    Y: 評価期間

    10: 単位合わせのための調整値

    365: 1年間の日数

    86400: 1日の秒数

    年度 社会的割引率 t/Y 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.0088 0.77 0 01960 7.9941 0.0175 2.98 2 161961 7.6866 0.0263 4.17 5 381962 7.3910 0.0351 5.63 9 671963 7.1067 0.0439 7.96 16 1141964 6.8333 0.0526 13.27 32 2191965 6.5705 0.0614 20.85 58 3811966 6.3178 0.0702 29.39 94 5941967 6.0748 0.0789 39.08 141 8571968 5.8412 0.0877 48.84 195 1,1391969 5.6165 0.0965 59.93 264 1,4831970 5.4005 0.1053 70.97 341 1,8421971 5.1928 0.1140 84.45 439 2,2801972 4.9931 0.1228 99.72 558 2,7861973 4.8010 0.1316 117.58 706 3,3901974 4.6164 0.1404 133.73 856 3,9521975 4.4388 0.1491 151.72 1,032 4,5811976 4.2681 0.1579 172.31 1,241 5,2971977 4.1039 0.1667 195.09 1,483 6,0861978 3.9461 0.1754 226.67 1,813 7,1541979 3.7943 0.1842 263.60 2,214 8,4011980 3.6484 0.1930 293.36 2,582 9,4201981 3.5081 0.2018 332.57 3,061 10,7381982 3.3731 0.2105 360.85 3,464 11,6841983 3.2434 0.2193 383.45 3,835 12,4381984 3.1187 0.2281 409.41 4,259 13,2831985 2.9987 0.2368 440.83 4,760 14,2741986 2.8834 0.2456 472.76 5,295 15,2681987 2.7725 0.2544 517.06 5,999 16,6321988 2.6658 0.2632 556.77 6,683 17,8161989 2.5633 0.2719 596.45 7,396 18,9581990 2.4647 0.2807 635.33 8,133 20,0451991 2.3699 0.2895 672.67 8,881 21,0471992 2.2788 0.2982 709.42 9,647 21,9841993 2.1911 0.3070 747.19 10,461 22,9211994 2.1068 0.3158 793.12 11,422 24,0641995 2.0258 0.3246 834.48 12,353 25,0251996 1.9479 0.3333 871.66 13,249 25,8081997 1.8730 0.3421 910.04 14,197 26,5911998 1.8009 0.3509 955.68 15,293 27,5411999 1.7317 0.3596 1,011.64 16,590 28,7292000 1.6651 0.3684 1,060.44 17,816 29,6652001 1.6010 0.3772 1,104.31 18,996 30,4132002 1.5395 0.3860 1,139.05 20,050 30,8672003 1.4802 0.3947 1,169.25 21,046 31,1522004 1.4233 0.4035 1,196.10 22,009 31,3252005 1.3686 0.4123 1,220.43 22,947 31,4052006 1.3159 0.4211 1,245.56 23,919 31,4752007 1.2653 0.4298 1,282.54 25,138 31,8072008 1.2167 0.4386 1,316.65 26,335 32,0422009 1.1699 0.4474 1,356.47 27,676 32,3782010 1.1249 0.4561 1,383.52 28,777 32,3712011 1.0816 0.4649 1,410.65 29,907 32,3472012 1.0400 0.4737 1,440.65 31,121 32,3662013 1.0000 0.4825 1,468.28 32,307 32,3072014 0.9615 0.4912 1,495.91 33,509 32,2192015 0.9246 0.5000 1,523.54 34,739 32,1202016 0.8890 0.5088 1,551.17 35,991 31,9962017 0.8548 0.5175 1,578.80 37,259 31,8492018 0.8219 0.5263 1,606.43 38,556 31,689

    1,699.00

    2,000,321

    t×(D2-D1)×A×P×U×10B= Σ

    365×86400×Y×(1+i)

    365

    86,400

    2,771

    0.51

    0.56

    1,038,000,000

    114

    10

  • 2019 0.7903 0.5351 1,634.06 39,875 31,5132020 0.7599 0.5439 1,661.69 41,216 31,3202021 0.7307 0.5526 1,680.34 42,345 30,9412022 0.7026 0.5614 1,699.00 43,497 30,5612023 0.6756 0.5702 1,699.00 44,179 29,8472024 0.6496 0.5789 1,699.00 44,853 29,1372025 0.6246 0.5877 1,699.00 45,535 28,4412026 0.6006 0.5965 1,699.00 46,217 27,7582027 0.5775 0.6053 1,699.00 46,898 27,0842028 0.5553 0.6140 1,699.00 47,572 26,4172029 0.5339 0.6228 1,699.00 48,254 25,7632030 0.5134 0.6316 1,699.00 48,936 25,1242031 0.4936 0.6404 1,699.00 49,618 24,4912032 0.4746 0.6491 1,699.00 50,292 23,8692033 0.4564 0.6579 1,699.00 50,974 23,2652034 0.4388 0.6667 1,699.00 51,656 22,6672035 0.4220 0.6754 1,699.00 52,330 22,0832036 0.4057 0.6842 1,699.00 53,011 21,5072037 0.3901 0.6930 1,699.00 53,693 20,9462038 0.3751 0.7018 1,699.00 54,375 20,3962039 0.3607 0.7105 1,699.00 55,049 19,8562040 0.3468 0.7193 1,699.00 55,731 19,3282041 0.3335 0.7281 1,699.00 56,413 18,8142042 0.3207 0.7368 1,699.00 57,087 18,3082043 0.3083 0.7456 1,699.00 57,769 17,8102044 0.2965 0.7544 1,699.00 58,451 17,3312045 0.2851 0.7632 1,699.00 59,132 16,8592046 0.2741 0.7719 1,699.00 59,806 16,3932047 0.2636 0.7807 1,699.00 60,488 15,9452048 0.2534 0.7895 1,699.00 61,170 15,5002049 0.2437 0.7982 1,699.00 61,844 15,0712050 0.2343 0.8070 1,699.00 62,526 14,6502051 0.2253 0.8158 1,699.00 63,208 14,2412052 0.2166 0.8246 1,699.00 63,890 13,8392053 0.2083 0.8333 1,699.00 64,564 13,4492054 0.2003 0.8421 1,699.00 65,245 13,0692055 0.1926 0.8509 1,699.00 65,927 12,6982056 0.1852 0.8596 1,699.00 66,601 12,3352057 0.1780 0.8684 1,699.00 67,283 11,9762058 0.1712 0.8772 1,699.00 67,965 11,6362059 0.1646 0.8860 1,699.00 68,647 11,2992060 0.1583 0.8947 1,699.00 69,321 10,9742061 0.1522 0.9035 1,699.00 70,003 10,6542062 0.1463 0.9123 1,699.00 70,685 10,3412063 0.1407 0.9211 1,699.00 71,366 10,0412064 0.1353 0.9298 1,699.00 72,040 9,7472065 0.1301 0.9386 1,699.00 72,722 9,4612066 0.1251 0.9474 1,699.00 73,404 9,1832067 0.1203 0.9561 1,699.00 74,078 8,9122068 0.1157 0.9649 1,699.00 74,760 8,6502069 0.1112 0.9737 1,699.00 75,442 8,3892070 0.1069 0.9825 1,699.00 76,124 8,1382071 0.1028 0.9912 1,699.00 76,798 7,8952072 0.0989 1.0000 1,699.00 77,479 7,663

    合計 2,000,321

  • 水源涵養かん

    便益 水質浄化便益  事業効果区域

    T-1 Y

    t tt = 1 t =T

    Qx: 全貯留量のうち生活用水使用相当量

    Qy: 全貯留量-Qx

    A: 事業対象区域面積(ha)

    P: 年間平均降雨量(mm/年)H24野呂川地区全体計画調査データによる

    T: 事業実施後、貯留率が安定するのに必要な年数

    D1: 事業実施前の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    D2: 事業実施後、T年経過後の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    Ux: 単位当たりの上水道給水原価(円/m3)H24野呂川地区全体計画調査データによる

    Uy: 単位当たりの雨水浄化費(円/m3)

    u:

    Y: 評価期間

    10: 単位合わせのための調整値

    年度 社会的割引率 事業対象区域面積 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.14 0.01 2 171960 7.9941 0.51 0.04 7 561961 7.6866 0.71 0.09 16 1231962 7.3910 0.94 0.16 28 2071963 7.1067 1.34 0.25 43 3061964 6.8333 2.23 0.39 68 4651965 6.5705 3.53 0.64 111 7291966 6.3178 4.97 0.96 167 1,0551967 6.0748 6.61 1.39 242 1,4701968 5.8412 8.25 1.96 341 1,9921969 5.6165 10.15 2.63 457 2,5671970 5.4005 12.02 3.42 595 3,2131971 5.1928 14.29 4.39 763 3,9621972 4.9931 16.88 5.50 956 4,7731973 4.8010 19.90 6.83 1,187 5,6991974 4.6164 22.64 8.33 1,448 6,6851975 4.4388 25.69 10.00 1,739 7,7191976 4.2681 29.17 11.90 2,069 8,8311977 4.1039 33.03 14.05 2,443 10,0261978 3.9461 38.39 16.51 2,870 11,3251979 3.7943 44.64 19.34 3,362 12,7561980 3.6484 49.71 22.41 3,896 14,2141981 3.5081 56.33 25.85 4,494 15,7651982 3.3731 61.14 29.47 5,123 17,2801983 3.2434 64.97 33.26 5,782 18,7531984 3.1187 69.38 37.21 6,469 20,1751985 2.9987 74.71 41.42 7,201 21,5941986 2.8834 80.12 45.77 7,957 22,9431987 2.7725 87.61 50.49 8,778 24,3371988 2.6658 94.35 55.46 9,642 25,7041989 2.5633 101.09 60.70 10,553 27,0511990 2.4647 107.66 66.16 11,502 28,3491991 2.3699 113.99 71.82 12,486 29,5911992 2.2788 120.24 77.62 13,494 30,7501993 2.1911 126.63 83.53 14,522 31,8191994 2.1068 134.40 89.49 15,558 32,7781995 2.0258 141.43 95.62 16,624 33,6771996 1.9479 147.71 101.67 17,676 34,4311997 1.8730 154.22 107.89 18,757 35,1321998 1.8009 161.97 114.37 19,884 35,8091999 1.7317 171.44 121.15 21,062 36,4732000 1.6651 179.73 128.17 22,283 37,1032001 1.6010 187.16 135.31 23,524 37,6622002 1.5395 193.03 142.32 24,743 38,0922003 1.4802 198.16 149.27 25,951 38,4132004 1.4233 202.71 156.03 27,126 38,6082005 1.3686 206.83 162.67 28,281 38,7052006 1.3159 211.09 169.11 29,400 38,6872007 1.2653 217.37 175.58 30,525 38,6232008 1.2167 223.16 182.02 31,645 38,502

    2,201,867

    t 1(D2-D1)×A×P×u×10B= Σ + Σ ×

     T×(1+i)

    176.35

    (1+i)

    Ux×Qx+Uy×Qyu=

    Qx+Qy

    24.60 億

    22.00 億

    0.14 ~ 287.95

    2,771

    15

    0.51

    0.56

    68.60出典:「地球環境・人間生活にかかる農業及び森林の多面的な機能の評価に関する調査研究報告書」(三菱総合研究所,H13.11)「雨水利用ハンドブック」

    単位当たりの水質浄化費(U x とU y を用いてQ x とQ yで比例按分して算出) 125.48

    114

  • 2009 1.1699 229.90 188.39 32,752 38,3172010 1.1249 234.48 194.61 33,834 38,0602011 1.0816 239.09 200.68 34,889 37,7362012 1.0400 244.16 206.68 35,932 37,3692013 1.0000 248.85 212.48 36,940 36,9402014 0.9615 253.54 217.96 37,893 36,4342015 0.9246 258.20 223.20 38,804 35,8782016 0.8890 262.89 228.22 39,677 35,2732017 0.8548 267.58 233.20 40,543 34,6562018 0.8219 272.24 238.15 41,403 34,0292019 0.7903 276.93 243.08 42,260 33,3982020 0.7599 281.59 248.06 43,126 32,7712021 0.7307 284.76 252.96 43,978 32,1352022 0.7026 287.95 257.69 44,800 31,4762023 0.6756 287.95 262.01 45,551 30,7742024 0.6496 287.95 265.87 46,222 30,0262025 0.6246 287.95 269.44 46,843 29,2582026 0.6006 287.95 272.70 47,410 28,4742027 0.5775 287.95 275.63 47,919 27,6732028 0.5553 287.95 278.23 48,371 26,8602029 0.5339 287.95 280.52 48,769 26,0382030 0.5134 287.95 282.50 49,113 25,2152031 0.4936 287.95 284.17 49,404 24,3862032 0.4746 287.95 285.54 49,642 23,5602033 0.4564 287.95 286.58 49,823 22,7392034 0.4388 287.95 287.31 49,950 21,9182035 0.4220 287.95 287.74 50,024 21,1102036 0.4057 287.95 287.95 50,061 20,3102037 0.3901 287.95 287.95 50,061 19,5292038 0.3751 287.95 287.95 50,061 18,7782039 0.3607 287.95 287.95 50,061 18,0572040 0.3468 287.95 287.95 50,061 17,3612041 0.3335 287.95 287.95 50,061 16,6952042 0.3207 287.95 287.95 50,061 16,0552043 0.3083 287.95 287.95 50,061 15,4342044 0.2965 287.95 287.95 50,061 14,8432045 0.2851 287.95 287.95 50,061 14,2722046 0.2741 287.95 287.95 50,061 13,7222047 0.2636 287.95 287.95 50,061 13,1962048 0.2534 287.95 287.95 50,061 12,6852049 0.2437 287.95 287.95 50,061 12,2002050 0.2343 287.95 287.95 50,061 11,7292051 0.2253 287.95 287.95 50,061 11,2792052 0.2166 287.95 287.95 50,061 10,8432053 0.2083 287.95 287.95 50,061 10,4282054 0.2003 287.95 287.95 50,061 10,0272055 0.1926 287.95 287.95 50,061 9,6422056 0.1852 287.95 287.95 50,061 9,2712057 0.1780 287.95 287.95 50,061 8,9112058 0.1712 287.95 287.95 50,061 8,5702059 0.1646 287.95 287.95 50,061 8,2402060 0.1583 287.95 287.95 50,061 7,9252061 0.1522 287.95 287.95 50,061 7,6192062 0.1463 287.95 287.95 50,061 7,3242063 0.1407 287.95 287.95 50,061 7,0442064 0.1353 287.95 287.95 50,061 6,7732065 0.1301 287.95 287.95 50,061 6,5132066 0.1251 287.95 287.95 50,061 6,2632067 0.1203 287.95 287.95 50,061 6,0222068 0.1157 287.95 287.95 50,061 5,7922069 0.1112 287.95 287.95 50,061 5,5672070 0.1069 287.95 287.95 50,061 5,3522071 0.1028 287.95 287.95 50,061 5,1462072 0.0989 287.95 287.95 50,061 4,951

    合計 2,201,867

  • 水源涵養かん

    便益 水質浄化便益  保全効果区域

    tt = 1

    Qx: 全貯留量のうち生活用水使用相当量

    Qy: 全貯留量-Qx

    A: 保全効果区域面積(ha)

    P: 年間平均降雨量(mm/年)H24野呂川地区全体計画調査データによる

    D1: 保全効果区域を放置した場合に想定される将来の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    D2: 保全効果区域内の現在の貯留率出典:「森林の間伐と水収支」(近嵐ら、1987)

    Ux: 単位当たりの上水道給水原価(円/m3)H24野呂川地区全体計画調査データによる

    Uy: 単位当たりの雨水浄化費(円/m3)

    u:

    Y: 評価期間

    10: 単位合わせのための調整値

    年度 社会的割引率 t/Y 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.0088 0.77 1 81960 7.9941 0.0175 2.98 9 721961 7.6866 0.0263 4.17 19 1461962 7.3910 0.0351 5.63 34 2511963 7.1067 0.0439 7.96 61 4341964 6.8333 0.0526 13.27 121 8271965 6.5705 0.0614 20.85 223 1,4651966 6.3178 0.0702 29.39 359 2,2681967 6.0748 0.0789 39.08 536 3,2561968 5.8412 0.0877 48.84 745 4,3521969 5.6165 0.0965 59.93 1,005 5,6451970 5.4005 0.1053 70.97 1,299 7,0151971 5.1928 0.1140 84.45 1,674 8,6931972 4.9931 0.1228 99.72 2,129 10,6301973 4.8010 0.1316 117.58 2,690 12,9151974 4.6164 0.1404 133.73 3,264 15,0681975 4.4388 0.1491 151.72 3,933 17,4581976 4.2681 0.1579 172.31 4,730 20,1881977 4.1039 0.1667 195.09 5,654 23,2031978 3.9461 0.1754 226.67 6,912 27,2751979 3.7943 0.1842 263.60 8,441 32,0281980 3.6484 0.1930 293.36 9,843 35,9111981 3.5081 0.2018 332.57 11,668 40,9331982 3.3731 0.2105 360.85 13,206 44,5451983 3.2434 0.2193 383.45 14,619 47,4151984 3.1187 0.2281 409.41 16,236 50,6351985 2.9987 0.2368 440.83 18,148 54,4201986 2.8834 0.2456 472.76 20,186 58,2041987 2.7725 0.2544 517.06 22,869 63,4041988 2.6658 0.2632 556.77 25,477 67,9171989 2.5633 0.2719 596.45 28,195 72,2721990 2.4647 0.2807 635.33 31,004 76,4161991 2.3699 0.2895 672.67 33,856 80,2351992 2.2788 0.2982 709.42 36,778 83,8101993 2.1911 0.3070 747.19 39,880 87,3811994 2.1068 0.3158 793.12 43,544 91,7381995 2.0258 0.3246 834.48 47,092 95,3991996 1.9479 0.3333 871.66 50,509 98,3861997 1.8730 0.3421 910.04 54,125 101,3761998 1.8009 0.3509 955.68 58,301 104,9941999 1.7317 0.3596 1,011.64 63,245 109,5212000 1.6651 0.3684 1,060.44 67,918 113,0902001 1.6010 0.3772 1,104.31 72,418 115,9412002 1.5395 0.3860 1,139.05 76,439 117,6782003 1.4802 0.3947 1,169.25 80,234 118,7622004 1.4233 0.4035 1,196.10 83,906 119,4232005 1.3686 0.4123 1,220.43 87,480 119,7252006 1.3159 0.4211 1,245.56 91,187 119,9932007 1.2653 0.4298 1,282.54 95,834 121,2592008 1.2167 0.4386 1,316.65 100,397 122,1532009 1.1699 0.4474 1,356.47 105,509 123,4352010 1.1249 0.4561 1,383.52 109,705 123,407

    u=Qx+Qy

    7,625,798

    t×(D2-D1)×A×P×u×10B= Σ

    Y × (1 + i)

    出典:「地球環境・人間生活にかかる農業及び森林の多面的な機能の評価に関する調査研究報告書」(三菱総合研究所,H13.11)「雨水利用ハンドブック」

    単位当たりの水質浄化費(U x とU y を用いてQ x とQ yで比例按分して算出) 125.48

    Ux×Qx+Uy×Qy

    114

    24.60 億

    22.00 億

    1,699.00

    2,771

    0.51

    0.56

    176.35

    68.60

  • 2011 1.0816 0.4649 1,410.65 114,015 123,3192012 1.0400 0.4737 1,440.65 118,644 123,3902013 1.0000 0.4825 1,468.28 123,165 123,1652014 0.9615 0.4912 1,495.91 127,746 122,8282015 0.9246 0.5000 1,523.54 132,436 122,4502016 0.8890 0.5088 1,551.17 137,211 121,9812017 0.8548 0.5175 1,578.80 142,043 121,4182018 0.8219 0.5263 1,606.43 146,986 120,8082019 0.7903 0.5351 1,634.06 152,015 120,1372020 0.7599 0.5439 1,661.69 157,127 119,4012021 0.7307 0.5526 1,680.34 161,432 117,9582022 0.7026 0.5614 1,699.00 165,824 116,5082023 0.6756 0.5702 1,699.00 168,424 113,7872024 0.6496 0.5789 1,699.00 170,993 111,0772025 0.6246 0.5877 1,699.00 173,593 108,4262026 0.6006 0.5965 1,699.00 176,192 105,8212027 0.5775 0.6053 1,699.00 178,791 103,2522028 0.5553 0.6140 1,699.00 181,361 100,7102029 0.5339 0.6228 1,699.00 183,960 98,2162030 0.5134 0.6316 1,699.00 186,560 95,7802031 0.4936 0.6404 1,699.00 189,159 93,3692032 0.4746 0.6491 1,699.00 191,729 90,9952033 0.4564 0.6579 1,699.00 194,328 88,6912034 0.4388 0.6667 1,699.00 196,927 86,4122035 0.4220 0.6754 1,699.00 199,497 84,1882036 0.4057 0.6842 1,699.00 202,096 81,9902037 0.3901 0.6930 1,699.00 204,696 79,8522038 0.3751 0.7018 1,699.00 207,295 77,7562039 0.3607 0.7105 1,699.00 209,865 75,6982040 0.3468 0.7193 1,699.00 212,464 73,6832041 0.3335 0.7281 1,699.00 215,063 71,7242042 0.3207 0.7368 1,699.00 217,633 69,7952043 0.3083 0.7456 1,699.00 220,233 67,8982044 0.2965 0.7544 1,699.00 222,832 66,0702045 0.2851 0.7632 1,699.00 225,431 64,2702046 0.2741 0.7719 1,699.00 228,001 62,4952047 0.2636 0.7807 1,699.00 230,600 60,7862048 0.2534 0.7895 1,699.00 233,200 59,0932049 0.2437 0.7982 1,699.00 235,769 57,4572050 0.2343 0.8070 1,699.00 238,369 55,8502051 0.2253 0.8158 1,699.00 240,968 54,2902052 0.2166 0.8246 1,699.00 243,567 52,7572053 0.2083 0.8333 1,699.00 246,137 51,2702054 0.2003 0.8421 1,699.00 248,736 49,8222055 0.1926 0.8509 1,699.00 251,336 48,4072056 0.1852 0.8596 1,699.00 253,905 47,0232057 0.1780 0.8684 1,699.00 256,505 45,6582058 0.1712 0.8772 1,699.00 259,104 44,3592059 0.1646 0.8860 1,699.00 261,703 43,0762060 0.1583 0.8947 1,699.00 264,273 41,8342061 0.1522 0.9035 1,699.00 266,872 40,6182062 0.1463 0.9123 1,699.00 269,472 39,4242063 0.1407 0.9211 1,699.00 272,071 38,2802064 0.1353 0.9298 1,699.00 274,641 37,1592065 0.1301 0.9386 1,699.00 277,240 36,0692066 0.1251 0.9474 1,699.00 279,839 35,0082067 0.1203 0.9561 1,699.00 282,409 33,9742068 0.1157 0.9649 1,699.00 285,009 32,9762069 0.1112 0.9737 1,699.00 287,608 31,9822070 0.1069 0.9825 1,699.00 290,207 31,0232071 0.1028 0.9912 1,699.00 292,777 30,0972072 0.0989 1.0000 1,699.00 295,376 29,213

    合計 7,625,798

  • 山地保全便益 土砂流出防止便益  事業効果区域

    T-1 Y

    t tt = 1 t =T

    U: 1m3の土砂を保全するために要する単位当たりの砂防ダム建設コスト(円/m3)出典:「砂防便覧」平成20年版

    V1: 事業実施前における1ha当りの年間浸食土砂量(m3) 多出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」

    V2: 事業実施後における1ha当りの年間浸食土砂量(m3) 出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」

    A: 事業対象区域面積(ha)

    T: 事業実施後、流出係数が安定するのに必要な年数

    Y: 評価期間

    年度 社会的割引率 事業対象区域面積 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.14 0.01 34 2831960 7.9941 0.51 0.04 134 1,0711961 7.6866 0.71 0.09 302 2,3211962 7.3910 0.94 0.16 536 3,9621963 7.1067 1.34 0.25 838 5,9551964 6.8333 2.23 0.39 1,308 8,9381965 6.5705 3.53 0.64 2,146 14,1001966 6.3178 4.97 0.96 3,219 20,3371967 6.0748 6.61 1.39 4,660 28,3091968 5.8412 8.25 1.96 6,571 38,3831969 5.6165 10.15 2.63 8,818 49,5261970 5.4005 12.02 3.42 11,466 61,9221971 5.1928 14.29 4.39 14,718 76,4281972 4.9931 16.88 5.50 18,440 92,0731973 4.8010 19.90 6.83 22,899 109,9381974 4.6164 22.64 8.33 27,928 128,9271975 4.4388 25.69 10.00 33,527 148,8201976 4.2681 29.17 11.90 39,897 170,2841977 4.1039 33.03 14.05 47,106 193,3181978 3.9461 38.39 16.51 55,353 218,4281979 3.7943 44.64 19.34 64,842 246,0301980 3.6484 49.71 22.41 75,134 274,1191981 3.5081 56.33 25.85 86,668 304,0401982 3.3731 61.14 29.47 98,805 333,2791983 3.2434 64.97 33.26 111,511 361,6751984 3.1187 69.38 37.21 124,755 389,0731985 2.9987 74.71 41.42 138,870 416,4291986 2.8834 80.12 45.77 153,454 442,4691987 2.7725 87.61 50.49 169,279 469,3261988 2.6658 94.35 55.46 185,942 495,6841989 2.5633 101.09 60.70 203,510 521,6571990 2.4647 107.66 66.16 221,816 546,7101991 2.3699 113.99 71.82 240,792 570,6531992 2.2788 120.24 77.62 260,238 593,0301993 2.1911 126.63 83.53 280,053 613,6241994 2.1068 134.40 89.49 300,035 632,1141995 2.0258 141.43 95.62 320,587 649,4451996 1.9479 147.71 101.67 340,871 663,9831997 1.8730 154.22 107.89 361,725 677,5111998 1.8009 161.97 114.37 383,451 690,5571999 1.7317 171.44 121.15 406,182 703,3852000 1.6651 179.73 128.17 429,718 715,5232001 1.6010 187.16 135.31 453,657 726,3052002 1.5395 193.03 142.32 477,159 734,5862003 1.4802 198.16 149.27 500,461 740,7822004 1.4233 202.71 156.03 523,125 744,5642005 1.3686 206.83 162.67 545,387 746,4172006 1.3159 211.09 169.11 566,978 746,0862007 1.2653 217.37 175.58 588,671 744,8452008 1.2167 223.16 182.02 610,262 742,5062009 1.1699 229.90 188.39 631,619 738,9312010 1.1249 234.48 194.61 652,473 733,9672011 1.0816 239.09 200.68 672,824 727,7262012 1.0400 244.16 206.68 692,940 720,6582013 1.0000 248.85 212.48 712,386 712,3862014 0.9615 253.54 217.96 730,759 702,6252015 0.9246 258.20 223.20 748,327 691,9032016 0.8890 262.89 228.22 765,158 680,2252017 0.8548 267.58 233.20 781,854 668,3292018 0.8219 272.24 238.15 798,450 656,2462019 0.7903 276.93 243.08 814,979 644,0782020 0.7599 281.59 248.06 831,676 631,9912021 0.7307 284.76 252.96 848,104 619,7102022 0.7026 287.95 257.69 863,962 607,0202023 0.6756 287.95 262.01 878,446 593,4782024 0.6496 287.95 265.87 891,388 579,046

    42,462,563

     T×(1+i) (1+i) 1.0

    t 1 (V1-V2)×A×UB= Σ + Σ ×

    0.14 ~ 287.95

    15

    114

    5,600

    山腹崩壊地 600.00

    整備済森林 1.30

  • 2025 0.6246 287.95 269.44 903,357 564,2372026 0.6006 287.95 272.70 914,287 549,1212027 0.5775 287.95 275.63 924,110 533,6742028 0.5553 287.95 278.23 932,827 517,9992029 0.5339 287.95 280.52 940,505 502,1362030 0.5134 287.95 282.50 947,143 486,2632031 0.4936 287.95 284.17 952,742 470,2732032 0.4746 287.95 285.54 957,336 454,3522033 0.4564 287.95 286.58 960,822 438,5192034 0.4388 287.95 287.31 963,270 422,6832035 0.4220 287.95 287.74 964,712 407,1082036 0.4057 287.95 287.95 965,416 391,6692037 0.3901 287.95 287.95 965,416 376,6092038 0.3751 287.95 287.95 965,416 362,1282039 0.3607 287.95 287.95 965,416 348,2262040 0.3468 287.95 287.95 965,416 334,8062041 0.3335 287.95 287.95 965,416 321,9662042 0.3207 287.95 287.95 965,416 309,6092043 0.3083 287.95 287.95 965,416 297,6382044 0.2965 287.95 287.95 965,416 286,2462045 0.2851 287.95 287.95 965,416 275,2402046 0.2741 287.95 287.95 965,416 264,6212047 0.2636 287.95 287.95 965,416 254,4842048 0.2534 287.95 287.95 965,416 244,6362049 0.2437 287.95 287.95 965,416 235,2722050 0.2343 287.95 287.95 965,416 226,1972051 0.2253 287.95 287.95 965,416 217,5082052 0.2166 287.95 287.95 965,416 209,1092053 0.2083 287.95 287.95 965,416 201,0962054 0.2003 287.95 287.95 965,416 193,3732055 0.1926 287.95 287.95 965,416 185,9392056 0.1852 287.95 287.95 965,416 178,7952057 0.1780 287.95 287.95 965,416 171,8442058 0.1712 287.95 287.95 965,416 165,2792059 0.1646 287.95 287.95 965,416 158,9072060 0.1583 287.95 287.95 965,416 152,8252061 0.1522 287.95 287.95 965,416 146,9362062 0.1463 287.95 287.95 965,416 141,2402063 0.1407 287.95 287.95 965,416 135,8342064 0.1353 287.95 287.95 965,416 130,6212065 0.1301 287.95 287.95 965,416 125,6012066 0.1251 287.95 287.95 965,416 120,7742067 0.1203 287.95 287.95 965,416 116,1402068 0.1157 287.95 287.95 965,416 111,6992069 0.1112 287.95 287.95 965,416 107,3542070 0.1069 287.95 287.95 965,416 103,2032071 0.1028 287.95 287.95 965,416 99,2452072 0.0989 287.95 287.95 965,416 95,480

    合計 42,462,563

  • 山地保全便益 土砂流出防止便益  保全効果区域

    tt = 1

    U:出典:「砂防便覧」平成20年版

    V1: 多出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」

    V2: 保全効果区域における現在の1ha当りの年間浸食土砂量(m3)

    出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」A: 保全効果区域面積(ha)

    Y: 評価期間

    年度 社会的割引率 t/Y 事業効果面積 効果額 現在価値化1958 8.64641959 8.3138 0.0088 0.77 23 1911960 7.9941 0.0175 2.98 175 1,3991961 7.6866 0.0263 4.17 368 2,8291962 7.3910 0.0351 5.63 663 4,9001963 7.1067 0.0439 7.96 1,172 8,3291964 6.8333 0.0526 13.27 2,340 15,9901965 6.5705 0.0614 20.85 4,292 28,2011966 6.3178 0.0702 29.39 6,917 43,7001967 6.0748 0.0789 39.08 10,338 62,8011968 5.8412 0.0877 48.84 14,361 83,8851969 5.6165 0.0965 59.93 19,390 108,9041970 5.4005 0.1053 70.97 25,055 135,3101971 5.1928 0.1140 84.45 32,278 167,6131972 4.9931 0.1228 99.72 41,056 204,9971973 4.8010 0.1316 117.58 51,878 249,0661974 4.6164 0.1404 133.73 62,950 290,6021975 4.4388 0.1491 151.72 75,843 336,6521976 4.2681 0.1579 172.31 91,220 389,3361977 4.1039 0.1667 195.09 109,035 447,4691978 3.9461 0.1754 226.67 133,297 526,0031979 3.7943 0.1842 263.60 162,792 617,6821980 3.6484 0.1930 293.36 189,826 692,5611981 3.5081 0.2018 332.57 225,010 789,3581982 3.3731 0.2105 360.85 254,669 859,0241983 3.2434 0.2193 383.45 281,932 914,4181984 3.1187 0.2281 409.41 313,099 976,4621985 2.9987 0.2368 440.83 349,986 1,049,5031986 2.8834 0.2456 472.76 389,284 1,122,4611987 2.7725 0.2544 517.06 441,017 1,222,7201988 2.6658 0.2632 556.77 491,314 1,309,7451989 2.5633 0.2719 596.45 543,727 1,393,7351990 2.4647 0.2807 635.33 597,914 1,473,6791991 2.3699 0.2895 672.67 652,902 1,547,3121992 2.2788 0.2982 709.42 709,265 1,616,2731993 2.1911 0.3070 747.19 769,071 1,685,1111994 2.1068 0.3158 793.12 839,747 1,769,1791995 2.0258 0.3246 834.48 908,159 1,839,7491996 1.9479 0.3333 871.66 974,047 1,897,3461997 1.8730 0.3421 910.04 1,043,784 1,955,0071998 1.8009 0.3509 955.68 1,124,328 2,024,8021999 1.7317 0.3596 1,011.64 1,219,672 2,112,1062000 1.6651 0.3684 1,060.44 1,309,794 2,180,9382001 1.6010 0.3772 1,104.31 1,396,561 2,235,8942002 1.5395 0.3860 1,139.05 1,474,101 2,269,3782003 1.4802 0.3947 1,169.25 1,547,290 2,290,2992004 1.4233 0.4035 1,196.10 1,618,111 2,303,0572005 1.3686 0.4123 1,220.43 1,687,033 2,308,8732006 1.3159 0.4211 1,245.56 1,758,519 2,314,0352007 1.2653 0.4298 1,282.54 1,848,139 2,338,4502008 1.2167 0.4386 1,316.65 1,936,138 2,355,6992009 1.1699 0.4474 1,356.47 2,034,714 2,380,4122010 1.1249 0.4561 1,383.52 2,115,645 2,379,8892011 1.0816 0.4649 1,410.65 2,198,751 2,378,1692012 1.0400 0.4737 1,440.65 2,288,017 2,379,5382013 1.0000 0.4825 1,468.28 2,375,218 2,375,2182014 0.9615 0.4912 1,495.91 2,463,548 2,368,7012015 0.9246 0.5000 1,523.54 2,554,002 2,361,4302016 0.8890 0.5088 1,551.17 2,646,085 2,352,3702017 0.8548 0.5175 1,578.80 2,739,269 2,341,5272018 0.8219 0.5263 1,606.43 2,834,604 2,329,7612019 0.7903 0.5351 1,634.06 2,931,570 2,316,8202020 0.7599 0.5439 1,661.69 3,030,166 2,302,6232021 0.7307 0.5526 1,680.34 3,113,188 2,274,8062022 0.7026 0.5614 1,699.00 3,197,887 2,246,8352023 0.6756 0.5702 1,699.00 3,248,014 2,194,3582024 0.6496 0.5789 1,699.00 3,297,571 2,142,1022025 0.6246 0.5877 1,699.00 3,347,699 2,090,9732026 0.6006 0.5965 1,699.00 3,397,826 2,040,734

    1m3の土砂を保全するために要する単位当たりの砂防ダム建設コスト(円/m3) 5,600

    147,062,054

    (V1-V2)×A×UB= Σ

    Y×1.0×(1+i)

    114

    事業を実施しない場合に想定される保全効果区域における将来の年間浸食土砂量(m3) 山腹崩壊地 600.00

    整備済森林 1.30

    1,699.00

  • 2027 0.5775 0.6053 1,699.00 3,447,953 1,991,1932028 0.5553 0.6140 1,699.00 3,497,511 1,942,1682029 0.5339 0.6228 1,699.00 3,547,638 1,894,0842030 0.5134 0.6316 1,699.00 3,597,765 1,847,0932031 0.4936 0.6404 1,699.00 3,647,892 1,800,5992032 0.4746 0.6491 1,699.00 3,697,450 1,754,8102033 0.4564 0.6579 1,699.00 3,747,577 1,710,3942034 0.4388 0.6667 1,699.00 3,797,704 1,666,4332035 0.4220 0.6754 1,699.00 3,847,262 1,623,5452036 0.4057 0.6842 1,699.00 3,897,389 1,581,1712037 0.3901 0.6930 1,699.00 3,947,516 1,539,9262038 0.3751 0.7018 1,699.00 3,997,643 1,499,5162039 0.3607 0.7105 1,699.00 4,047,201 1,459,8252040 0.3468 0.7193 1,699.00 4,097,328 1,420,9532041 0.3335 0.7281 1,699.00 4,147,455 1,383,1762042 0.3207 0.7368 1,699.00 4,197,013 1,345,9822043 0.3083 0.7456 1,699.00 4,247,140 1,309,3932044 0.2965 0.7544 1,699.00 4,297,267 1,274,1402045 0.2851 0.7632 1,699.00 4,347,394 1,239,4422046 0.2741 0.7719 1,699.00 4,396,952 1,205,2052047 0.2636 0.7807 1,699.00 4,447,079 1,172,2502048 0.2534 0.7895 1,699.00 4,497,206 1,139,5922049 0.2437 0.7982 1,699.00 4,546,764 1,108,0462050 0.2343 0.8070 1,699.00 4,596,891 1,077,0522051 0.2253 0.8158 1,699.00 4,647,018 1,046,9732052 0.2166 0.8246 1,699.00 4,697,145 1,017,4022053 0.2083 0.8333 1,699.00 4,746,703 988,7382054 0.2003 0.8421 1,699.00 4,796,830 960,8052055 0.1926 0.8509 1,699.00 4,846,957 933,5242056 0.1852 0.8596 1,699.00 4,896,515 906,8352057 0.1780 0.8684 1,699.00 4,946,642 880,5022058 0.1712 0.8772 1,699.00 4,996,769 855,4472059 0.1646 0.8860 1,699.00 5,046,896 830,7192060 0.1583 0.8947 1,699.00 5,096,454 806,7692061 0.1522 0.9035 1,699.00 5,146,581 783,3102062 0.1463 0.9123 1,699.00 5,196,708 760,2782063 0.1407 0.9211 1,699.00 5,246,835 738,2302064 0.1353 0.9298 1,699.00 5,296,393 716,6022065 0.1301 0.9386 1,699.00 5,346,520 695,5822066 0.1251 0.9474 1,699.00 5,396,647 675,1212067 0.1203 0.9561 1,699.00 5,446,205 655,1782068 0.1157 0.9649 1,699.00 5,496,332 635,9262069 0.1112 0.9737 1,699.00 5,546,459 616,7662070 0.1069 0.9825 1,699.00 5,596,587 598,2752071 0.1028 0.9912 1,699.00 5,646,144 580,4242072 0.0989 1.0000 1,699.00 5,696,271 563,361

    合計 147,062,054

  • 山地保全便益 土砂崩壊防止便益  事業効果区域

    tt = 11

    U: 1m3の土砂を保全するために要する単位当たりの砂防ダム建設コスト(円/m3)出典:「砂防便覧」平成20年版

    V: 崩壊見込み量(m3/年)

    A: 事業対象区域面積(ha)

    R: 流域内崩壊率 89出典:「治山全体調査」S42からS46

    N: 雨量比=50年確率日雨量/既往最大日雨量H24野呂川地区全体計画調査データによる

    H: 平均崩壊深(m)H24野呂川地区全体計画調査データによる

    Y: 評価期間

    10,000: 単位合わせのための調整値

    年度 社会的割引率 事業対象区域面積 崩壊見込み量 効果額 現在価値化1958 8.64641959 8.3138 0.14 0.00 0 01960 7.9941 0.51 0.00 0 01961 7.6866 0.71 0.00 0 01962 7.3910 0.94 0.00 0 01963 7.1067 1.34 0.00 0 01964 6.8333 2.23 0.00 0 01965 6.5705 3.53 0.00 0 01966 6.3178 4.97 0.00 0 01967 6.0748 6.61 0.00 0 01968 5.8412 8.25 0.00 0 01969 5.6165 10.15 0.05 0 01970 5.4005 12.02 0.18 1 51971 5.1928 14.29 0.25 1 51972 4.9931 16.88 0.33 2 101973 4.8010 19.90 0.47 3 141974 4.6164 22.64 0.78 4 181975 4.4388 25.69 1.23 7 311976 4.2681 29.17 1.73 10 431977 4.1039 33.03 2.29 13 531978 3.9461 38.39 2.85 16 631979 3.7943 44.64 3.50 20 761980 3.6484 49.71 4.14 23 841981 3.5081 56.33 4.92 28 981982 3.3731 61.14 5.81 33 1111983 3.2434 64.97 6.85 38 1231984 3.1187 69.38 7.79 44 1371985 2.9987 74.71 8.84 50 1501986 2.8834 80.12 10.04 56 1611987 2.7725 87.61 11.37 64 1771988 2.6658 94.35 13.21 74 1971989 2.5633 101.09 15.36 86 2201990 2.4647 107.66 17.10 96 2371991 2.3699 113.99 19.38 109 2581992 2.2788 120.24 21.03 118 2691993 2.1911 126.63 22.35 125 2741994 2.1068 134.40 23.87 134 2821995 2.0258 141.43 25.70 144 2921996 1.9479 147.71 27.56 154 3001997 1.8730 154.22 30.14 169 3171998 1.8009 161.97 32.46 182 3281999 1.7317 171.44 34.78 195 3382000 1.6651 179.73 37.04 207 3452001 1.6010 187.16 39.22 220 3522002 1.5395 193.03 41.37 232 3572003 1.4802 198.16 43.57 244 3612004 1.4233 202.71 46.24 259 3692005 1.3686 206.83 48.66 272 3722006 1.3159 211.09 50.82 285 3752007 1.2653 217.37 53.06 297 3762008 1.2167 223.16 55.73 312 3802009 1.1699 229.90 58.99 330 3862010 1.1249 234.48 61.84 346 3892011 1.0816 239.09 64.40 361 3902012 1.0400 244.16 66.42 372 3872013 1.0000 248.85 68.18 382 3822014 0.9615 253.54 69.75 391 3762015 0.9246 258.20 71.17 399 3692016 0.8890 262.89 72.64 407 362

    0.8000

    1.0

    114

    0.14 ~ 287.95

    21,227

    V×UB= Σ

    (1+i)

    0.00 ~ 99.06

    富士川 0.0043

    V=

    5,600

    0.01 × A × R × N × H × 10,000

  • 2017 0.8548 267.58 74.80 419 3582018 0.8219 272.24 76.79 430 3532019 0.7903 276.93 79.11 443 3502020 0.7599 281.59 80.69 452 3432021 0.7307 284.76 82.28 461 3372022 0.7026 287.95 84.02 471 3312023 0.6756 287.95 85.63 480 3242024 0.6496 287.95 87.24 489 3182025 0.6246 287.95 88.84 498 3112026 0.6006 287.95 90.45 507 3052027 0.5775 287.95 92.06 516 2982028 0.5553 287.95 93.66 524 2912029 0.5339 287.95 95.27 534 2852030 0.5134 287.95 96.87 542 2782031 0.4936 287.95 97.96 549 2712032 0.4746 287.95 99.06 555 2632033 0.4564 287.95 99.06 555 2532034 0.4388 287.95 99.06 555 2442035 0.4220 287.95 99.06 555 2342036 0.4057 287.95 99.06 555 2252037 0.3901 287.95 99.06 555 2172038 0.3751 287.95 99.06 555 2082039 0.3607 287.95 99.06 555 2002040 0.3468 287.95 99.06 555 1922041 0.3335 287.95 99.06 555 1852042 0.3207 287.95 99.06 555 1782043 0.3083 287.95 99.06 555 1712044 0.2965 287.95 99.06 555 1652045 0.2851 287.95 99.06 555 1582046 0.2741 287.95 99.06 555 1522047 0.2636 287.95 99.06 555 1462048 0.2534 287.95 99.06 555 1412049 0.2437 287.95 99.06 555 1352050 0.2343 287.95 99.06 555 1302051 0.2253 287.95 99.06 555 1252052 0.2166 287.95 99.06 555 1202053 0.2083 287.95 99.06 555 1162054 0.2003 287.95 99.06 555 1112055 0.1926 287.95 99.06 555 1072056 0.1852 287.95 99.06 555 1032057 0.1780 287.95 99.06 555 992058 0.1712 287.95 99.06 555 952059 0.1646 287.95 99.06 555 912060 0.1583 287.95 99.06 555 882061 0.1522 287.95 99.06 555 842062 0.1463 287.95 99.06 555 812063 0.1407 287.95 99.06 555 782064 0.1353 287.95 99.06 555 752065 0.1301 287.95 99.06 555 722066 0.1251 287.95 99.06 555 692067 0.1203 287.95 99.06 555 672068 0.1157 287.95 99.06 555 642069 0.1112 287.95 99.06 555 622070 0.1069 287.95 99.06 555 592071 0.1028 287.95 99.06 555 572072 0.0989 287.95 99.06 555 55

    合計 21,227

  • 山地保全便益 土砂崩壊防止便益  保全効果区域

    Y

    tt = 1

    U:出典:「砂防便覧」平成20年版

    V1: 多出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」

    V2: 保全効果区域における現在の1ha当りの年間浸食土砂量(m3)

    出典:「治山全体調査の考え方進め方」「森林の公益的機能に関する文献要約集」「森林水文」A: 保全効果区域面積(ha)

    Y: 評価期間

    年度 社会的割引率 整備期間係数 効果額 現在価値化1958 8.64641959 8.3138 0.0005 2 171960 7.9941 0.0018 6 481961 7.6866 0.0025 8 611962 7.3910 0.0033 11 811963 7.1067 0.0047 16 1141964 6.8333 0.0078 26 1781965 6.5705 0.0123 41 2691966 6.3178 0.0173 58 3661967 6.0748 0.0230 77 4681968 5.8412 0.0287 96 5611969 5.6165 0.0353 118 6631970 5.4005 0.0418 140 7561971 5.1928 0.0497 167 8671972 4.9931 0.0587 197 9841973 4.8010 0.0692 232 1,1141974 4.6164 0.0787 264 1,2191975 4.4388 0.0893 299 1,3271976 4.2681 0.1014 340 1,4511977 4.1039 0.1148 385 1,5801978 3.9461 0.1334 447 1,7641979 3.7943 0.1551 520 1,9731980 3.6484 0.1727 579 2,1121981 3.5081 0.1957 656 2,3011982 3.3731 0.2124 712 2,4021983 3.2434 0.2257 757 2,4551984 3.1187 0.2410 808 2,5201985 2.9987 0.2595 870 2,6091986 2.8834 0.2783 933 2,6901987 2.7725 0.3043 1,020 2,8281988 2.6658 0.3277 1,099 2,9301989 2.5633 0.3511 1,177 3,0171990 2.4647 0.3739 1,254 3,0911991 2.3699 0.3959 1,327 3,1451992 2.2788 0.4176 1,400 3,1901993 2.1911 0.4398 1,475 3,2321994 2.1068 0.4668 1,565 3,2971995 2.0258 0.4912 1,647 3,3361996 1.9479 0.5130 1,720 3,3501997 1.8730 0.5356 1,796 3,3641998 1.8009 0.5625 1,886 3,3961999 1.7317 0.5954 1,996 3,4562000 1.6651 0.6242 2,093 3,4852001 1.6010 0.6500 2,179 3,4892002 1.5395 0.6704 2,248 3,4612003 1.4802 0.6882 2,307 3,4152004 1.4233 0.7040 2,360 3,3592005 1.3686 0.7183 2,408 3,2962006 1.3159 0.7331 2,458 3,2342007 1.2653 0.7549 2,531 3,2022008 1.2167 0.7750 2,598 3,1612009 1.1699 0.7984 2,677 3,1322010 1.1249 0.8143 2,730 3,0712011 1.0816 0.8303 2,784 3,0112012 1.0400 0.8479 2,843 2,9572013 1.0000 0.8642 2,897 2,8972014 0.9615 0.8805 2,952 2,8382015 0.9246 0.8967 3,006 2,7792016 0.8890 0.9130 3,061 2,7212017 0.8548 0.9293 3,116 2,6642018 0.8219 0.9455 3,170 2,6052019 0.7903 0.9618 3,225 2,5492020 0.7599 0.9780 3,279 2,4922021 0.7307 0.9890 3,316 2,4232022 0.7026 1.0000 3,353 2,3562023 0.6756 1.0000 3,353 2,2652024 0.6496 1.0000 3,353 2,1782025 0.6246 1.0000 3,353 2,0942026 0.6006 1.0000 3,353 2,014

    1,699.00

    114

    1m3の土砂を保全するために要する単位当たりの砂防ダム建設コスト(円/m3) 5,600

    600.00

    1.30

    山腹崩壊地

    整備済森林

    事業を実施しない場合に想定される保全効果区域における将来の年間浸食土砂量(m3)

    193,785

    B= Σ(1+i)

    (V1-V2)×U

  • 2027 0.5775 1.0000 3,353 1,9362028 0.5553 1.0000 3,353 1,8622029 0.5339 1.0000 3,353 1,7902030 0.5134 1.0000 3,353 1,7212031 0.4936 1.0000 3,353 1,6552032 0.4746 1.0000 3,353 1,5912033 0.4564 1.0000 3,353 1,5302034 0.4388 1.0000 3,353 1,4712035 0.4220 1.0000 3,353 1,4152036 0.4057 1.0000 3,353 1,3602037 0.3901 1.0000 3,353 1,3082038 0.3751 1.0000 3,353 1,2582039 0.3607 1.0000 3,353 1,2092040 0.3468 1.0000 3,353 1,1632041 0.3335 1.0000 3,353 1,1182042 0.3207 1.0000 3,353 1,0752043 0.3083 1.0000 3,353 1,0342044 0.2965 1.0000 3,353 9942045 0.2851 1.0000 3,353 9562046 0.2741 1.0000 3,353 9192047 0.2636 1.0000 3,353 8842048 0.2534 1.0000 3,353 8502049 0.2437 1.0000 3,353 8172050 0.2343 1.0000 3,353 7862051 0.2253 1.0000 3,353 7552052 0.2166 1.0000 3,353 7262053 0.2083 1.0000 3,353 6982054 0.2003 1.0000 3,353 6722055 0.1926 1.0000 3,353 6462056 0.1852 1.0000 3,353 6212057 0.1780 1.0000 3,353 5972058 0.1712 1.0000 3,353 5742059 0.1646 1.0000 3,353 5522060 0.1583 1.0000 3,353 5312061 0.1522 1.0000 3,353 5102062 0.1463 1.0000 3,353 4912063 0.1407 1.0000 3,353 4722064 0.1353 1.0000 3,353 4542065 0.1301 1.0000 3,353 4362066 0.1251 1.0000 3,353 4192067 0.1203 1.0000 3,353 4032068 0.1157 1.0000 3,353 3882069 0.1112 1.0000 3,353 3732070 0.1069 1.0000 3,353 3582071 0.1028 1.0000 3,353 3452072 0.0989 1.0000 3,353 332

    合計 193,785

    ③野呂川 様式2④野呂川 算定