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@article{1126964,
author = {Walker, D A and Epstein, Harold E and Raynolds, Martha K and Kuss, Patrick and Kopecký, Martin and Frost, G V and Daniels, Fred J A and Leibman, Marina O and Moskalenko, N G and Matyshak, G V and Khitun, O V and Khomutov, A V and Forbes, Bruce C and Bhatt, U S and Kade, Anja N and Vonlanthen, C M and Tichý, Lubomír},
article_location = {BRISTOL},
article_number = {1},
doi = {http://dx.doi.org/10.1088/1748-9326/7/1/015504},
keywords = {AVHRR; bioclimate; biomass; climate change; Eurasia Arctic transect; JUICE; leaf area index (LAI); normalized difference vegetation index (NDVI); North America Arctic transect; summer warmth index; tundra},
language = {eng},
issn = {1748-9326},
journal = {ENVIRONMENTAL RESEARCH LETTERS},
title = {Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects},
volume = {7},
year = {2012}
}
TY - JOUR
ID - 1126964
AU - Walker, D A - Epstein, Harold E - Raynolds, Martha K - Kuss, Patrick - Kopecký, Martin - Frost, G V - Daniels, Fred J A - Leibman, Marina O - Moskalenko, N G - Matyshak, G V - Khitun, O V - Khomutov, A V - Forbes, Bruce C - Bhatt, U S - Kade, Anja N - Vonlanthen, C M - Tichý, Lubomír
PY - 2012
TI - Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects
JF - ENVIRONMENTAL RESEARCH LETTERS
VL - 7
IS - 1
SP - 1-17
EP - 1-17
PB - IOP PUBLISHING LTD
SN - 17489326
KW - AVHRR
KW - bioclimate
KW - biomass
KW - climate change
KW - Eurasia Arctic transect
KW - JUICE
KW - leaf area index (LAI)
KW - normalized difference vegetation index (NDVI)
KW - North America Arctic transect
KW - summer warmth index
KW - tundra
N2 - 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 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.
ER -
WALKER, D A, Harold E EPSTEIN, Martha K RAYNOLDS, Patrick KUSS, Martin KOPECKÝ, G V FROST, Fred J A DANIELS, Marina O LEIBMAN, N G MOSKALENKO, G V MATYSHAK, O V KHITUN, A V KHOMUTOV, Bruce C FORBES, U S BHATT, Anja N KADE, C M VONLANTHEN a Lubomír TICHÝ. Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects. \textit{ENVIRONMENTAL RESEARCH LETTERS}. BRISTOL: IOP PUBLISHING LTD, 2012, roč.~7, č.~1, s.~1-17. ISSN~1748-9326. Dostupné z: https://dx.doi.org/10.1088/1748-9326/7/1/015504.
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