英文關鍵字
aspen
bark
blowdown
blown
boreal
bottom
branches
broke
butt
centennial
damage
deadfall
debris
end
fell
feral
forest
forestry
forests
gnawed
hundred
lumber
management
moose
north
northern
old
primeval
row
sector
slash
spruce
stembase
stool
storm
timber
tree
trees
wild
wind
windblow
windbreak
windfall
windfallen
windthrow
windthrown
winter
withered
wood
woodland
year