DOI: 10.1016/j.gloplacha.2013.06.012
论文题名: NDVI-based vegetation changes and their responses to climate change from 1982 to 2011: A case study in the Koshi River Basin in the middle Himalayas
作者: Zhang Y. ; Gao J. ; Liu L. ; Wang Z. ; Ding M. ; Yang X.
刊名: Global and Planetary Change
ISSN: 0921-8257
出版年: 2013
卷: 108 起始页码: 139
结束页码: 148
语种: 英语
英文关键词: Climate change
; Growing season
; Koshi River Basin
; Normalized Difference Vegetation Index (NDVI)
; Piecewise linear regression
; Vegetation change
Scopus关键词: Growing season
; Normalized difference vegetation index
; Piecewise linear regression
; River basins
; Vegetation change
; Piecewise linear techniques
; Vegetation
; Watersheds
; Climate change
; climate change
; climate effect
; data set
; growing season
; NDVI
; phenology
; river basin
; satellite imagery
; satellite sensor
; seasonality
; vegetation dynamics
; Himalayas
; Kosi Basin
英文摘要: Considerable researches during the past several decades have focused on monitoring changes in vegetation growth due to its important role in regulating the terrestrial carbon cycle and the climate system. In this study, we combined datasets of the satellite-derived Normalized Difference Vegetation Index (NDVI) and climatic factors to analyze spatio-temporal patterns of vegetation growth in 1982-2006 in the Koshi River Basin (KRB) in the middle Himalayas. In addition, the dataset from the global land surface satellite sensor from SPOT-4's Vegetation instrument in 1998-2011 was used to further verify the results of this study. At the regional scale, although a statistically significant increase in average growing season NDVI was observed (0.0008yr-1, P=0.03) during the entire study period, there existed three distinct periods with opposing trends. Growing season NDVI significantly increased in 1982-1994 (0.0019yr-1, P=0.03), and then decreased in 1994-2000 (-0.0058yr-1, P<0.001), while increased again in 2000-2006 (0.0049yr-1, P<0.001) and in 2000-2011 (0.0034yr-1, P<0.001). A sudden drop in NDVI in 1994-2000 largely contributed to these fluctuations in growing season NDVI over the KRB. Spring, summer and autumn NDVI significantly decreased in 1994-2000 (-0.0077yr-1, P<0.001; -0.0067yr-1, P<0.001; and -0.0155yr-1, P<0.001; respectively). Our further spatial analyses supported the existence of the sudden decrease in spring, summer and autumn NDVI in 1994-2000. © 2013 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880624008&doi=10.1016%2fj.gloplacha.2013.06.012&partnerID=40&md5=fecf3b0d86fb5000520910ddabbc573f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11163
Appears in Collections: 全球变化的国际研究计划
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作者单位: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Recommended Citation:
Zhang Y.,Gao J.,Liu L.,et al. NDVI-based vegetation changes and their responses to climate change from 1982 to 2011: A case study in the Koshi River Basin in the middle Himalayas[J]. Global and Planetary Change,2013-01-01,108.