Earth & Environmental Sciences
buffer zone
100%
ditch
56%
nitrogen load
36%
grass
32%
groundwater
26%
surface water
23%
nitrate
20%
soil
14%
denitrification
14%
hydrogeology
10%
groundwater flow
9%
leaching
7%
piezometer
6%
agriculture
6%
method
6%
nitrogen
5%
peat
5%
leakage
5%
Engineering & Materials Science
Groundwater
50%
Hydrogeology
49%
Surface waters
39%
Nitrogen
35%
Agriculture
31%
Soils
22%
Groundwater flow
22%
Denitrification
20%
Runoff
20%
Seepage
17%
Drainage
15%
Aquifers
12%
Leaching
11%
Phosphorus
11%
Statistical tests
10%
Water
5%
Chemical Compounds
Buffer Solution
36%
Surface Water
29%
Soil
24%
Groundwater
21%
Nitrogen
19%
Denitrification
6%
Flow
6%