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Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects
- Source :
- Environmental Research Letters. 7:015504
- Publication Year :
- 2012
- Publisher :
- IOP Publishing, 2012.
-
Abstract
- Satellite-based measurements of the normalized difference vegetation index (NDVI; an index of vegetation greenness and photosynthetic capacity) indicate that tundra environments are generally greening and becoming more productive as climates warm in the Arctic. The greening, however, varies and is even negative in some parts of the Arctic. To help interpret the space-based observations, the International Polar Year (IPY) Greening of the Arctic project conducted ground-based surveys along two >1500 km transects that span all five Arctic bioclimate subzones. Here we summarize the climate, soil, vegetation, biomass, and spectral information collected from the North America Arctic transect (NAAT), which has a more continental climate, and the Eurasia Arctic transect (EAT), which has a more oceanic climate. The transects have broadly similar summer temperature regimes and overall vegetation physiognomy, but strong differences in precipitation, especially winter precipitation, soil texture and pH, disturbance regimes, and plant species composition and structure. The results indicate that summer warmth and NDVI increased more strongly along the more continental transect.
- Subjects :
- 0106 biological sciences
010504 meteorology & atmospheric sciences
Renewable Energy, Sustainability and the Environment
Public Health, Environmental and Occupational Health
Oceanic climate
Climate change
Vegetation
15. Life on land
010603 evolutionary biology
01 natural sciences
Normalized Difference Vegetation Index
Tundra
Arctic
13. Climate action
Climatology
Environmental science
Transect
Energy source
0105 earth and related environmental sciences
General Environmental Science
Subjects
Details
- ISSN :
- 17489326
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Environmental Research Letters
- Accession number :
- edsair.doi...........39df562dbfd1b60e7afd21b0457dead6