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Environmental sciences
2
Environmental technology. Sanitary engineering
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GE1-350
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Landsat
Physics
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Q
QC1-999
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Science
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TD1-1066
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Alaska
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Canada
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normalized difference vegetation index (NDVI)
1
permafrost
1
plant cover
1
plant functional type
1
shrub expansion
1
tundra
1
vegetation dynamics
1
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