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Professor Frits Mohren gave a presentation at the Make a Forest Kick Off
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Timber, Trees, Forests and Forestry
Frits MohrenForest Ecology and Forest Management Group
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
►cover some 30 % of the land area (3,5 Bha)
maandag 4 april 2011
►cover some 30 % of the land area (3,5 Bha)
►contain 80 % of terrestrial biodiversity
maandag 4 april 2011
►cover some 30 % of the land area (3,5 Bha)
►contain 80 % of terrestrial biodiversity
►300 million people live in the forest
maandag 4 april 2011
►cover some 30 % of the land area (3,5 Bha)
►contain 80 % of terrestrial biodiversity
►300 million people live in the forest
►1,6 billion people directly depend on them
maandag 4 april 2011
►cover some 30 % of the land area (3,5 Bha)
►contain 80 % of terrestrial biodiversity
►300 million people live in the forest
►1,6 billion people directly depend on them
►Contain 1000 Gt carbon (eq to atmosphere)
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
highest tree:115,6 m
maandag 4 april 2011
highest tree:115,6 m
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
Ecologie van Bossen FEM10306
maandag 4 april 2011
Ecologie van Bossen FEM10306
► 1m3 timber per person per year; (from natural forest: sustainable harvest of 1m3 per ha per yr)
maandag 4 april 2011
Ecologie van Bossen FEM10306
► 1m3 timber per person per year; (from natural forest: sustainable harvest of 1m3 per ha per yr)
maandag 4 april 2011
Ecologie van Bossen FEM10306
maandag 4 april 2011
Ecologie van Bossen FEM10306
► Sustainable use from natural forests: 1m3 per hectare per year;
maandag 4 april 2011
Ecologie van Bossen FEM10306
► Sustainable use from natural forests: 1m3 per hectare per year;► Sustainable use from plantations: 10 m3 per hectare per year
maandag 4 april 2011
Ecologie van Bossen FEM10306
► Sustainable use from natural forests: 1m3 per hectare per year;► Sustainable use from plantations: 10 m3 per hectare per year► Demand: 7 billion m3, sustainable supply from natural forest only max 3,5 billion m3
maandag 4 april 2011
n Exploitation and timber mining ( - 1900):n Deforestation along sea trade routesn Early silviculture
n Early forestry (1850 – 1950’s): n Plantation silviculturen Exploitation linked to timber traden Europe: sustainable forest management
n Global exploitative phase (1950’s – 1990’s):n Strong increase in deforestationn Globalisation and environmental awareness, close-to-nature forestry
n Sustainable use, conservation and environmental services (1990-)n Community forestry, livelihoods, forests as life support systems
Forest Management
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
+/- 1935:
after WW-II:tractors and skiddermaandag 4 april 2011
Silvicultural systems: shifting cultivation, Guyana
maandag 4 april 2011
Shifting cultivation (boreal zone) Russia
Polenov, Vasili Dmitrievich: The Burnt Forest, 1881 (Tretyakov Galery, Moscow)
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
European forests 150 mil. ha, very divers and fragmentedMostly plantations, slow increase in area High demands from societyCradle of sustainable forestry
Diverse and high quality forests
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
maandag 4 april 2011
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