Agriculture & Biology
hardwood forests
100%
forest ecosystems
89%
organic soils
33%
soil
29%
atmospheric deposition
29%
experimental forests
27%
clearcutting
25%
simulation models
20%
water
20%
acidification
20%
mineralization
19%
Clean Air Act
17%
forested watersheds
16%
throughfall
14%
isotope fractionation
14%
Northeastern United States
13%
weathering
11%
leaching
9%
mineral content
9%
adsorption
8%
sulfur
8%
ecosystems
7%
minerals
7%
Earth & Environmental Sciences
forest ecosystem
75%
watershed
57%
organic soil
27%
soil
22%
clearcutting
20%
brook
19%
atmospheric deposition
18%
disturbance
18%
acidification
16%
simulation
15%
water
13%
mineralization
13%
ecosystem response
10%
throughfall
10%
mineral
9%
turnover
7%
mass balance
7%
isotopic composition
7%
fractionation
7%
incorporation
7%
weathering
7%
leaching
6%
sulfur
6%
isotope
6%
forecast
6%
adsorption
5%
rate
5%
air
4%
need
4%
loss
4%
modeling
3%
Medicine & Life Sciences
Forests
94%
Ecosystem
87%
Soil
85%
Water
29%
Minerals
17%
New England
11%
Sulfur
10%
Adsorption
9%
Isotopes
9%
Air
7%