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Title

Changes in satellite-derived vegetation growth trend in temperate and boreal Eurasia from 1982 to 2006

Publication Year

2011

Author(s)
  • Piao, Shilong
  • Wang, Xuhui
  • Ciais, Philippe
  • Zhu, Biao
  • Wang, Tao
  • Liu, Jie
Source
GLOBAL CHANGE BIOLOGY Volume: 17 Issue: 10 Pages: 3228-3239 Published: 2011
ISSN
1354-1013
Abstract

Monitoring changes in vegetation growth has been the subject of considerable research during the past several decades, because of the important role of vegetation in regulating the terrestrial carbon cycle and the climate system. In this study, we combined datasets of satellite-derived Normalized Difference Vegetation Index (NDVI) and climatic factors to analyze spatio-temporal patterns of changes in vegetation growth and their linkage with changes in temperature and precipitation in temperate and boreal regions of Eurasia (>23.5 degrees N) from 1982 to 2006. At the continental scale, although a statistically significant positive trend of average growing season NDVI is observed (0.5 x 10(-3) year (1), P = 0.03) during the entire study period, there are two distinct periods with opposite trends in growing season NDVI. Growing season NDVI has first significantly increased from 1982 to 1997 (1.8 x 10(-3) year(-1), P < 0.001), and then decreased from 1997 to 2006 (-1.3 x 10(-3) year(-1), P = 0.055). This reversal in the growing season NDVI trends over Eurasia are largely contributed by spring and summer NDVI changes. Both spring and summer NDVI significantly increased from 1982 to 1997 (2.1 x 10(-3) year(-1), P = 0.01; 1.6 x 10(-3) year(-1) P < 0.001, respectively), but then decreased from 1997 to 2006, particularly summer NDVI which may be related to the remarkable decrease in summer precipitation ( 2.7mm yr(-1), P = 0.009). Further spatial analyses supports the idea that the vegetation greening trend in spring and summer that occurred during the earlier study period 1982-1997 was either stalled or reversed during the following study period 1997-2006. But the turning point of vegetation NDVI is found to vary across different regions.

Author Keyword(s)
  • climate change
  • Eurasia
  • NDVI
  • vegetation browning
  • vegetation greening
KeyWord(s) Plus
  • NET PRIMARY PRODUCTION
  • ECOSYSTEM PRODUCTIVITY
  • ECOLOGICAL THRESHOLDS
  • CARBON-DIOXIDE
  • CO2 EMISSIONS
  • FOREST
  • CHINA
  • REDUCTION
  • DROUGHT
  • SEASON
ESI Discipline(s)
  • Environment/Ecology
Web of Science Category(ies)
  • Biodiversity Conservation
  • Ecology
  • Environmental Sciences
Adress(es)

[Piao, Shilong; Wang, Xuhui; Liu, Jie] Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China; [Ciais, Philippe; Wang, Tao] CEA CNRS UVSQ, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France; [Zhu, Biao] Univ Calif Santa Cruz, Dept Environm Studies, Santa Cruz, CA 95064 USA

Reprint Adress

Piao, SL (reprint author), Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China.

Country(ies)
  • France
  • People's Republic of China
  • United States
CNRS - Adress(es)
  • Laboratoire des sciences du climat et de l'environnement (LSCE), UMR8212
Accession Number
WOS:000294571700018
uid:/208RF9HZ
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