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