Agriculture & Biology
nitrogen oxides
93%
savannas
69%
vegetation
51%
Prosopis
40%
soil
34%
nitrification
27%
nitrous oxide
26%
aboveground biomass
23%
soil types
15%
Prosopis glandulosa var. glandulosa
14%
oxides
14%
clay
14%
surface storage
13%
Southwestern United States
10%
land cover
10%
biomass
9%
temperature
9%
soil texture
9%
clay soils
8%
organic soils
8%
rangelands
8%
vegetation types
8%
arid zones
7%
mineralization
7%
soil pH
7%
nitric oxide
6%
grasslands
6%
soil water
6%
canopy
6%
ecosystems
5%
carbon
5%
nitrogen
4%
Earth & Environmental Sciences
soil nitrogen
79%
savanna
72%
nitrogen oxides
70%
vegetation
41%
aboveground biomass
32%
nitrification
21%
soil
16%
effect
16%
soil type
14%
oxide
11%
fold
11%
clay loam
9%
shallow soil
9%
temperature
8%
nitric oxide
8%
rangeland
8%
soil texture
8%
clay soil
8%
organic soil
7%
semiarid region
7%
nitrous oxide
7%
arid region
7%
vegetation type
7%
soil surface
6%
grassland
6%
soil moisture
6%
canopy
6%
land cover
6%
mineralization
5%
clay
5%
rate
5%
biomass
4%
nitrogen
4%
ecosystem
4%
world
4%
carbon
4%
Medicine & Life Sciences
Grassland
100%
Soil
74%
Nitric Oxide
56%
Prosopis
51%
Biomass
35%
Nitrification
31%
Clay
24%
Oxides
13%
Temperature
12%
Southwestern United States
9%
Nitrous Oxide
6%
Ecosystem
6%
Carbon
5%
Nitrogen
5%