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Corpus Systématique Végétale

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Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects

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  • Letter
  • Special Issue on Dynamics of Arctic and Sub-Arctic Vegetation
  • bioclimate
  • biomass
  • climate change
  • Eurasia Arctic transect
  • leaf area index (LAI)
  • normalized difference vegetation index (NDVI)
  • North America Arctic transect
  • summer warmth index
  • tundra
Nom du fichier dans la ressource
  • D A Walker 1
  • H E Epstein 2
  • M K Raynolds 1
  • P Kuss 1,3
  • M A Kopecky 4
  • G V Frost 2
  • F J A Danils 5
  • M O Leibman 6
  • N G Moskalenko 6
  • G V Matyshak 7
  • O V Khitun 8
  • A V Khomutov 6
  • B C Forbes 9
  • U S Bhatt 10
  • A N Kade 1
  • C M Vonlanthen 11
  • L Tich 12
  • 1) Institute of Arctic Biology, University of Alaska Fairbanks, USA
  • 2) Department of Environmental Sciences, University of Virginia, USA
  • 3) Institute of Plant Sciences, University of Bern, Switzerland
  • 4) Department of Vegetation Ecology, Institute of Botany of theAcademy of Sciences of the CzechRepublic, Brno, Czech Republic
  • 5) Institute ofBiology and Biotechnology of Plants, Mnster, Germany
  • 6) Russian Academy of Science, Earth Cryosphere Institute, Tyumen, Russia
  • 7) Faculty of Soil Science, Lomonosov Moscow State University, Moscow, Russia
  • 8) Komarov BotanicalInstitute, St Petersburg, Russia
  • 9) Arctic Centre, University of Lapland, Rovaniemi, Finland
  • 10) Geophysical Institute, University of Alaska Fairbanks, USA
  • 11) Bundesamt fr Umwelt, BAFU, Bern, Switzerland
  • 12) Department of Botany and Zoology, Masaryk University, Brno, Czech Republic

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 >1500km 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.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - embryologie: invertebres et vertebres. teratologie
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Environmental Research Letters

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