Earth & Environmental Sciences
intercropping
100%
crop
48%
water extraction
42%
ecotone
39%
resource use
36%
development model
34%
wheat
30%
maize
30%
soil fertility
17%
soil erosion
15%
land
15%
modeling
14%
water use
12%
rainfed agriculture
11%
interspecific interaction
11%
water
10%
wind erosion
10%
climate change
9%
food security
8%
limiting factor
8%
temporal distribution
8%
vegetation cover
8%
water use efficiency
8%
organ
7%
field experiment
7%
roughness
7%
natural resource
7%
canopy
6%
leaching
6%
decomposition
6%
spatial distribution
5%
productivity
5%
organic matter
5%
nutrient
5%
Agriculture & Biology
intercropping
73%
ecotones
43%
crops
26%
wheat
21%
corn
21%
crop models
20%
soil fertility
15%
climate change
14%
China
14%
water
13%
wind erosion
12%
rainfed farming
11%
roughness
10%
soil erosion
10%
vegetation cover
9%
natural resources
9%
simulation models
8%
food security
8%
leaching
8%
organic matter
7%
water use efficiency
7%
spatial distribution
7%
canopy
6%
climate
6%
degradation
5%
nutrients
5%
land use
5%