Agriculture & Biology
kriging
97%
animal manure management
95%
German Federal Republic
85%
soil texture
82%
Netherlands
81%
surface water
76%
agricultural land
76%
Belgium
75%
European Union
72%
phosphorus
51%
environmental factors
49%
seepage
49%
nutrients
41%
eutrophication
40%
agricultural soils
38%
sandy soils
37%
water quality
34%
leaching
33%
barns
30%
ammonia
29%
preferential flow
27%
management systems
26%
sampling
24%
animal manures
24%
marine sediments
24%
peat soils
23%
high water table
22%
subsoil
21%
clay soils
20%
runoff
19%
soil profiles
19%
topsoil
19%
groundwater
18%
methodology
18%
animal production
18%
peat
18%
laws and regulations
17%
soil
17%
mineralization
17%
autocorrelation
16%
soil organic matter
16%
clay
16%
annealing
15%
production technology
14%
water
14%
excretion
14%
minerals
12%
manure storage
12%
animal housing
11%
case studies
11%
uncertainty
8%
livestock
7%
metals
6%
carbon
5%
nitrogen
5%
Earth & Environmental Sciences
phosphorus
100%
soil texture
74%
loss
73%
kriging
69%
agricultural land
55%
agriculture
49%
soil
44%
need
37%
river
33%
surface water
31%
agricultural soil
30%
sandy soil
23%
interpolation
23%
environmental target
21%
eutrophication
20%
simulated annealing
16%
animal production
16%
effect
16%
variogram
16%
seepage water
16%
water quality
15%
method
15%
peat soil
14%
trend
13%
preferential flow
13%
autocorrelation
13%
water table
12%
production system
12%
subsoil
11%
literature review
11%
topsoil
11%
manure
11%
marine sediment
11%
soil profile
10%
peat
10%
seepage
10%
legislation
10%
crop
9%
leaching
8%
mineralization
8%
regulation
8%
runoff
8%
feces
7%
organic matter
7%
clay
7%
sewage treatment
7%
groundwater
6%
mineral
6%
sewage
5%
traffic
5%
recycling
5%
Engineering & Materials Science
Phosphorus
83%
Rivers
68%
Textures
55%
Soils
54%
Surface waters
42%
Eutrophication
25%
Peat
22%
Seepage
19%
Water quality
18%
Runoff
11%
Manures
10%
Biological materials
10%
Sediments
9%
Leaching
9%
Groundwater
9%
Minerals
7%
Deposits
7%
Clay
7%
Animals
7%