Landbrug og biologi
groundwater
100%
tracer techniques
91%
pollutants
88%
lakes
75%
dissolved organic matter
59%
groundwater recharge
39%
dissolved organic carbon
31%
water
16%
isotopes
11%
groundwater flow
10%
total dissolved nitrogen
10%
cluster analysis
10%
total dissolved phosphorus
10%
hydrologic models
9%
drainage channels
8%
total phosphorus
6%
factor analysis
6%
total nitrogen
5%
clay
5%
pesticides
4%
sampling
4%
degradation
3%
nutrients
3%
methodology
3%
Geo- og miljøvidenskab
recharge
81%
tracer
72%
catchment
69%
groundwater
55%
pollutant
54%
lake
53%
dissolved organic matter
40%
modeling
38%
dissolved organic carbon
22%
water retention
18%
cluster analysis
10%
isotope
8%
phosphorus
8%
well
7%
water
6%
nitrogen
6%
rate
5%
factor analysis
5%
groundwater flow
5%
flow pattern
5%
pesticide
5%
comparison
4%
drainage
4%
clay
3%
degradation
3%
nutrient
3%
methodology
3%
method
1%