Subject
forest
ecosystem
18
biotope
8
climatic change
7
ecology
6
forestry
6
climatic effect
5
climatology
4
pollution control
4
plant ecology
3
carbon dioxide
2
forest decline
2
nitrogen
2
tropics
2
Forest conservation
1
agriculture
1
ammonia
1
assimilation
1
atmospheric deposition
1
biodiversity
1
biogeochemical cycle
1
carbon
1
carbon cycle
1
carbon dioxide cycle
1
coastal region
1
crop
1
ecobalance
1
emission
1
energy balance
1
environmental balance
1
environmental pollution
1
food chain
1
global change
1
hydrology
1
insect
1
material balance
1
nitrogen cycle
1
nutrient
1
nutrition
1
nutritional cycle
1
parasite
1
pheromone
1
population ecology
1
population growth
1
resorption
1
soil
1
statistics
1
temperature effect
1
vegetation
1
water balance
1
more ...