英文關鍵字
area
branch
brown
climate
close
closeup
clouds
conifers
conservation
cut
deciduous
decline
dense
destroyed
destruction
detail
dry
ecology
effect
environment
environmental
europe
exploitation
felled
flora
forest
global
green
greenhouse
ground
industry
land
landscape
natural
nature
outdoors
overgrown
pine
planet
reserve
season
single
stub
stump
timber
tree
vegetation
warming
wood