Earth & Environmental Sciences
soil nitrogen
100%
water
26%
shrub
22%
land cover
19%
irrigation
18%
common land
18%
homeowner
16%
soil
15%
rooting
15%
chronosequence
14%
resource availability
14%
resource use
13%
garden
13%
water availability
12%
municipality
11%
household
10%
soil water
9%
drought
9%
rain
9%
plastic
9%
leaching
9%
nitrate
8%
nutrient
8%
demand
8%
services
7%
rainfall
7%
removal
6%
rock
6%
rate
4%
Engineering & Materials Science
Nitrogen
80%
Soils
67%
Water
46%
Irrigation
29%
Rain
26%
Drought
18%
Availability
17%
Nitrates
15%
Nutrients
15%
Leaching
14%
Conservation
11%
Rocks
10%
Plastics
9%
Medicine & Life Sciences
Soil
93%
Nitrogen
85%
Water
57%
Droughts
19%
Rain
17%
Gardens
17%
Nitrates
13%
Plastics
11%
Nutrients
10%
Population
4%
Social Sciences
water
67%
irrigation
30%
landscape management
17%
drought
15%
homeowner
14%
municipality
10%
resources
10%
conservation
10%
time
8%
demand
8%