Earth & Environmental Sciences
permafrost
100%
tundra
58%
warming
44%
soil
37%
carbon
34%
ecosystem
29%
soil carbon
23%
organic carbon
19%
decomposition
17%
respiration
17%
thawing
16%
productivity
15%
thermokarst
14%
climate
13%
boreal forest
13%
loss
13%
permafrost ecosystem
12%
tundra soil
12%
climate change
11%
active layer
10%
organic soil
10%
nitrogen
10%
degradation
8%
carbon cycle
8%
mineral
8%
soil temperature
8%
growing season
7%
eddy covariance
7%
montane forest
7%
vegetation
7%
incubation
7%
carbon stock
7%
winter
7%
soil organic matter
7%
vulnerability
7%
methane
7%
plant community
7%
microbial community
6%
atmosphere
6%
carbon dioxide
6%
temperature
6%
biomass
5%
carbon emission
5%
nutrient cycling
5%
carbon storage
5%
rate
5%
wildfire
5%
fungus
5%
soil nitrogen
5%
soil respiration
5%
Agriculture & Biology
permafrost
94%
tundra
62%
ecosystems
30%
soil
26%
carbon
26%
degradation
18%
Picea mariana
18%
soil carbon
15%
ecosystem respiration
14%
soil organic carbon
13%
boreal forests
12%
tundra soils
12%
Arctic region
12%
climate change
11%
soil organic matter
11%
thawing
11%
eddy covariance
9%
net primary productivity
9%
gross primary productivity
9%
nitrogen
9%
climate
9%
organic soils
9%
carbon sinks
8%
soil heating
8%
soil temperature
8%
carbon dioxide
7%
microbial communities
7%
carbon radioisotopes
7%
montane forests
7%
organic carbon
7%
global warming
7%
plant communities
6%
temperature
6%
vegetation
6%
highlands
6%
growing season
6%
subsidence
6%
methane production
6%
frigid soils
6%
cell respiration
6%
carbon cycle
5%
winter
5%
methane
5%
water table
5%
biogeochemical cycles
5%
mineral soils
5%
uncertainty
5%
soil water
5%
