Agriculture & Biology
Arctic region
12%
carbon
7%
carbon radioisotopes
52%
degradation
29%
ecosystems
36%
fine roots
13%
graminoids
16%
lakes
9%
mineral soils
30%
nitrogen
14%
nutrient availability
37%
nutrients
29%
organic horizons
18%
organic soils
55%
phosphorus
8%
shrubs
10%
soil
12%
soil horizons
16%
soil organic matter
45%
tundra
62%
vegetation
8%
Earth & Environmental Sciences
carbon
6%
decomposition
34%
ecosystem
28%
fine root
15%
lake
7%
litter
34%
loss
19%
material
4%
mineral
13%
nitrogen
14%
nutrient
31%
nutrient availability
41%
organic matter
32%
organic soil
50%
phosphorus
8%
rate
7%
shrub
11%
soil
15%
soil horizon
13%
soil layer
11%
tundra
52%
vegetation
7%
vertical distribution
11%
warming
9%
Chemical Compounds
Carbon Atom
3%
Decomposition
20%
Ecosystem
57%
Mineral
13%
Nitrogen
9%
Nutrient
51%
Organic Matter
51%
Phosphorus(.)
6%
Soil
41%
Tundra
100%