Earth & Environmental Sciences
permafrost
100%
tundra
59%
warming
46%
soil
36%
carbon
35%
ecosystem
29%
soil carbon
23%
respiration
18%
decomposition
17%
organic carbon
17%
productivity
16%
thawing
16%
climate
14%
loss
14%
thermokarst
13%
permafrost ecosystem
12%
climate change
12%
boreal forest
11%
tundra soil
10%
nitrogen
10%
organic soil
10%
degradation
9%
active layer
8%
soil temperature
8%
carbon cycle
8%
eddy covariance
7%
growing season
7%
montane forest
7%
vulnerability
7%
incubation
7%
carbon stock
7%
methane
7%
plant community
7%
microbial community
7%
vegetation
7%
mineral
6%
winter
6%
atmosphere
6%
temperature
6%
soil organic matter
6%
carbon emission
6%
nutrient cycling
6%
carbon storage
6%
carbon dioxide
5%
biomass
5%
rate
5%
fungus
5%
soil nitrogen
5%
soil respiration
5%
stable isotope
5%
Agriculture & Biology
permafrost
95%
tundra
64%
ecosystems
30%
soil
27%
carbon
27%
degradation
18%
Picea mariana
18%
ecosystem respiration
15%
soil carbon
15%
soil organic carbon
14%
Arctic region
12%
climate change
12%
soil organic matter
10%
tundra soils
10%
boreal forests
10%
thawing
10%
eddy covariance
9%
net primary productivity
9%
nitrogen
9%
climate
9%
carbon sinks
9%
soil heating
9%
gross primary productivity
9%
soil temperature
9%
organic soils
9%
microbial communities
8%
carbon radioisotopes
7%
montane forests
7%
global warming
7%
carbon dioxide
7%
plant communities
7%
temperature
7%
vegetation
7%
methane production
6%
frigid soils
6%
growing season
6%
cell respiration
6%
carbon cycle
6%
winter
6%
methane
6%
biogeochemical cycles
5%
highlands
5%
mineral soils
5%
subsidence
5%
water table
5%
uncertainty
5%
