Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
Alborz Series
Dashte Kavir (Desert)
Dashte Lute (Desert)
2000730
520
140
200
270
5
139
NHighest point 5,671 mLowest point -28 m
Isfahan
*
Water Resources of IranPrecipitation
252 mm413 b m3
Evapotranspiration296 b m3
Surface Flows92 b m3
Water Inflow13 b m3
Infiltration25 b m3
Renewable Water Resources 130 b m3
FAO reports that about 36% of total land and 60% of the agricultural soils in Iran are in danger of erosion.
– Cultivation of steep slopes
– Deforestation– Wind erosion– Water erosion
)ton/ha/year(Region Soil Erosion
Asia, Africa, S. America 30-40
USA, Europe 13-17
Iran 30-32
The average erosion in Iran is about 4.3 times of the global
The following data is available for central Zagrous region;
Land use at Soil mapDEMLand coverSoil Erosion Map
Climate data:Rainfall, monthly and for some station daily data for the last 30-yrMax and Min TemperatureSolar RadiationRelative HumidityPan EvaporationWind
Hydrological Data:Water and Sediment Load