Agriculture & Biology
nitrous oxide
100%
methane
85%
soil
44%
montane forests
33%
methane production
25%
ecosystems
13%
grasslands
10%
soil water
9%
landforms
8%
denitrification
7%
remote sensing
6%
habitats
6%
porosity
5%
dry season
5%
valleys
5%
highlands
5%
wet season
5%
tropics
5%
seasonal variation
5%
nitrates
4%
rain
4%
prediction
3%
water
2%
Earth & Environmental Sciences
nitrous oxide
90%
methane
66%
soil
37%
montane forest
36%
ecosystem
11%
atmospheric sink
10%
grassland
10%
soil emission
8%
habitat
7%
emission inventory
6%
calculation
6%
pore space
6%
emission source
6%
wet season
6%
trend
6%
landform
6%
tropics
5%
dry season
5%
denitrification
5%
modeling
5%
soil moisture
5%
soil water
5%
nitrate
4%
porosity
4%
valley
4%
remote sensing
4%
rainfall
3%
laboratory
3%
prediction
3%
water
1%
analysis
1%