Earth & Environmental Sciences
intercropping
100%
ecotone
79%
resource use
73%
crop
48%
soil fertility
35%
soil erosion
31%
rainfed agriculture
23%
interspecific interaction
23%
wind erosion
20%
climate change
19%
food security
17%
limiting factor
17%
temporal distribution
16%
vegetation cover
16%
organ
15%
field experiment
15%
roughness
14%
natural resource
14%
canopy
13%
leaching
12%
decomposition
12%
spatial distribution
11%
productivity
11%
organic matter
11%
nutrient
10%
climate
9%
simulation
7%
effect
3%
Agriculture & Biology
ecotones
87%
intercropping
73%
crop models
40%
soil fertility
31%
climate change
28%
wind erosion
25%
rainfed farming
23%
China
21%
roughness
20%
soil erosion
20%
vegetation cover
19%
natural resources
18%
crops
17%
simulation models
17%
food security
16%
leaching
16%
organic matter
15%
spatial distribution
14%
canopy
13%
climate
13%
degradation
10%
nutrients
10%
soil
8%