Earth & Environmental Sciences
carbon dioxide
88%
city center
95%
combustion
21%
ecosystem
33%
effect
6%
energy use
29%
growing season
25%
inverse analysis
39%
irrigation
21%
isotope
41%
isotopic composition
24%
natural gas
24%
respiration
100%
saline lake
32%
seasonal variation
23%
soil process
33%
soil respiration
31%
urban area
21%
urban site
95%
valley
38%
water
8%
Agriculture & Biology
carbon dioxide
87%
cell respiration
56%
combustion
20%
ecosystem respiration
29%
ecosystems
14%
energy
11%
growing season
15%
irrigation
14%
isotopes
38%
leaves
24%
natural gas
22%
rural areas
19%
salt lakes
25%
seasonal variation
16%
soil
9%
soil respiration
23%
urban areas
19%
valleys
34%
water
7%