Professor Frits Mohren gave a presentation at the Make a Forest Kick Off

1. Timber, Trees, Forests and Forestry
Frits Mohren
Forest Ecology and Forest Management Group
maandag 4 april 2011

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4. ► cover some 30 % of the land area (3,5 Bha)
maandag 4 april 2011

5. ► cover some 30 % of the land area (3,5 Bha)
► contain 80 % of terrestrial biodiversity
maandag 4 april 2011

6. ► 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

7. ► 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

8. ► 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

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13. highest tree:
115,6 m
maandag 4 april 2011

14. highest tree:
115,6 m
maandag 4 april 2011

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19. Ecologie van Bossen FEM10306
maandag 4 april 2011

20. 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

21. 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

22. Ecologie van Bossen FEM10306
maandag 4 april 2011

23. Ecologie van Bossen FEM10306
► Sustainable use hectare per year;
forests: 1m 3 per from natural
maandag 4 april 2011

24. Ecologie van Bossen FEM10306
► Sustainable use hectare per year;
forests: 1m 3 per from natural
► Sustainable use from plantations:
10 m3 per hectare per year
maandag 4 april 2011

25. Ecologie van Bossen FEM10306
► Sustainable use hectare per year;
forests: 1m 3 per from natural
► Sustainable use from plantations:
10 m3 per hectare per year
► Demand: 7 billion forest only
m3,
supply from natural sustainable
max 3,5 billion m3
maandag 4 april 2011

26. Forest Management
n Exploitation and timber mining ( - 1900):
n Deforestation along sea trade routes
n Early silviculture
n Early forestry (1850 – 1950’s):
n Plantation silviculture
n Exploitation linked to timber trade
n Europe: sustainable forest management
n Global exploitative phase (1950’s – 1990’s):
n Strong increase in deforestation
n 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
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30. +/- 1935:
after WW-II:
tractors and
skidder
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31. Silvicultural systems: shifting cultivation, Guyana
maandag 4 april 2011

32. Shifting cultivation (boreal zone) Russia
Polenov, Vasili Dmitrievich: The Burnt Forest, 1881 (Tretyakov Galery, Moscow)
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35. European forests
 150 mil. ha,fragmented
divers and very
 Mostly plantations,
slow increase in area
 High demands from
society
 Cradle of sustainable
forestry
 Diverseforests
quality and high
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