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Environmental sciences
2
Environmental technology. Sanitary engineering
2
GE1-350
2
Physics
2
Q
QC1-999
2
Science
TD1-1066
2
tundra
Landsat
1
Siberia
1
alder
1
facilitation
1
normalized difference vegetation index (NDVI)
1
patterned-ground
1
permafrost
1
shrub expansion
1
shrubification
1
vegetation dynamics
1
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