Forestry
Forestry
Importance:
· Environmental-protective importance
Oxygen
Cleans the air/soils/ground water
Protects the soil from erosion
· Timber
Firewood
Woodwork
Building materials
Timber cellulose paper
· Mushrooms/berries/juices
· Habitat of different species
Measuring the amount of forest:
· Fixing the area under the forests (ha/%) -> In Estonia 47.4%, 2.143 mil/ha
It doesn't take into account the amount of timber
· To measure the amount of timber (m3) -> 352.7 mil/m3
It doesn't take into account the annual increase
· To fix different species of trees (%) -> Pine 40%, Birch 30%, Spruce 20%
· To measure the annual increase of timber (m3, ha, year) -> 9 mil. m3/ha/year
Main principle of the economy of forests: Annual cutting should be equal to annual
increase.
Trees are divided into:
· Precious trees (ebony, mahagony, sandalwood)
· Hard-br...
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