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
文献类型：EI期刊论文
| 作者 | Zhang Yili; Liu Linshan; Wang Zhaofeng |
| 发表日期 | 2013 |
| 关键词 | Climate change Piecewise linear techniques Vegetation Watersheds |
| 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. |
| 出处 | Global and Planetary Change
 |
| 卷 | 108页:139-148 |
| 收录类别 | EI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31438]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang Yili,Liu Linshan,Wang Zhaofeng. 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. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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