Landbrug og biologi
ammonium nitrate
19%
carbon nitrogen ratio
18%
coniferous forests
18%
Fagus
18%
forest litter
99%
infiltration (hydrology)
20%
loam soils
21%
microbial activity
18%
mineralization
34%
mycorrhizae
18%
nutrients
51%
phosphates
12%
Picea abies
17%
Pseudotsuga menziesii
19%
Quercus
31%
sampling
6%
sandy soils
18%
soil organic matter
32%
soil properties
86%
soil solution
40%
Geo- og miljøvidenskab
accumulation rate
10%
ammonium nitrate
11%
coniferous tree
9%
effect
20%
forest floor
100%
immobilization
87%
infiltration
7%
microbial activity
9%
mineralization
14%
mycorrhiza
13%
nutrient
56%
oak
19%
organic matter
12%
phosphate
7%
rate
3%
sampling
5%
sandy soil
9%
soil
12%
soil property
76%
trial
7%