Earth & Environmental Sciences
Kyoto Protocol
99%
soil carbon
84%
carbon sink
63%
cropland management
48%
monitoring
43%
revegetation
33%
sampling
31%
land
30%
carbon stock
29%
transparency
28%
land management
27%
emission reduction
26%
forest management
26%
grazing
24%
soil
23%
vegetation
16%
carbon
15%
method
12%
Agriculture & Biology
soil carbon
100%
carbon sinks
99%
protocols
59%
monitoring
52%
grazing lands
39%
land management
34%
land restoration
33%
cropland
33%
forest management
31%
sampling
29%
uncertainty
27%
soil sampling
24%
vegetation
20%
carbon
18%
methodology
14%
soil
13%
Engineering & Materials Science
Soils
64%
Carbon
62%
Network protocols
56%
Monitoring
46%
Biospherics
34%
Revegetation
32%
Sampling
23%
Forestry
21%
Transparency
17%
Fluxes
13%
Uncertainty
10%
Chemical Compounds
Soil
70%
Carbon Atom
38%
Sampling
27%
Transparency
16%
Reduction
7%