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Arctic
15N
3
Betula
3
Nitrogen
3
Shrub Expansion
2
Snow-Shrub Feedback Hypothesis
2
Winter Processes
2
Biogeoscience
1
CO2
1
Carbon
1
Carbon balance
1
Mineralization
1
Model
1
Net ecosystem exchange
1
Remote sensing
1
Snow
1
Soil
1
Tundra
1
nitrogen
1
shrub expansion
1
snow-shrub feedback hypothesis
1
winter processes
1
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