Physics & Astronomy
respiration
60%
soils
51%
isotopes
42%
fractionation
34%
plots
22%
chambers
16%
steppes
14%
estimates
12%
ecosystems
9%
gases
7%
confidence
6%
artifacts
6%
decomposition
5%
carbon
4%
Agriculture & Biology
soil respiration
60%
isotopes
50%
carbon dioxide
38%
fractionation
27%
uncertainty
24%
methodology
13%
oil fields
10%
information sources
9%
Bayesian theory
9%
steppes
9%
soil
8%
ecosystems
6%
gases
6%
carbon
5%
degradation
5%
Earth & Environmental Sciences
soil respiration
55%
partitioning
41%
isotope
36%
fractionation
27%
method
10%
gas well
9%
measurement method
9%
trace gas
8%
steppe
8%
respiration
7%
soil
7%
artifact
6%
decomposition
5%
effect
5%
well
5%
ecosystem
4%
carbon
4%
experiment
3%
rate
2%
analysis
2%
Chemical Compounds
Soil Respiration
100%
Isotope
42%
Fractionation
34%
Measurement Method
12%
Ecosystem
11%
Gas
10%
Soil
8%
Decomposition
6%
Diffusion
6%
Carbon Atom
4%