干旱区生态环境知识资源中心(Arid): Vegetation Index Reconstruction and Linkage with Drought for the Source Region of the Yangtze River Based on Tree-ring Data

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	Vegetation Index Reconstruction and Linkage with Drought for the Source Region of the Yangtze River Based on Tree-ring Data
	Li Jinjian; Wang Shu; Qin Ningsheng; Liu Xisheng; Jin Liya
来源期刊	中国地理科学(英文版)
ISSN	1002-0063
出版年	2021
卷号	31 期号:4 页码:1002-0063
英文摘要	Variations in vegetation are closely related to climate change, but understanding of their characteristics and causes remains limited. As a typical semi-humid and semi-arid cold plateau region, it is important to understand the knowledge of long term Normalized Difference Vegetation Index (NDVI) variations and find the potential causes in the source region of the Yangtze River. Based on four tree-ring width chronologies, the regional mean NDVI for July and August spanning the period 1665-2013 was reconstructed using a regression model, and it explained 43.9% of the total variance during the period 1981-2013. In decadal, the reconstructed NDVI showed eight growth stages (1754-1764, 1766-1783, 1794-1811, 1828-1838, 1843-1855, 1862-1873, 1897-1909, and 1932-1945) and four degradation stages (1679-1698, 1726-1753, 1910-1923, and 1988-2000). And based on wavelet analysis, significant cycles of 2-3 yr and 3-8 yr were identified. In additional, there was a significant positive correlation between the NDVI and the Palmer Drought Severity Index (PDSI) during the past 349 yr, and they were mainly in phase. However, according to the results of correlation analysis between different grades of drought/wet and NDVI, there was significant asymmetry in extreme drought years and extreme wet years. In extreme drought years, NDVI was positively correlated with PDSI, and in extreme wet years they were negatively correlated.
英文关键词	Normalized Difference Vegetation Index (NDVI) reconstruction dendrochronology tree ring Source Region of the Yangtze River
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6999524
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365414
作者单位	Li Jinjian, School of Atmospheric Sciences, Chengdu University of Information Technology, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu, Sichuan 610225, China.; Jin Liya, School of Atmospheric Sciences, Chengdu University of Information Technology, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu, Sichuan 610225, China.; Wang Shu, School of Atmospheric Sciences, Chengdu University of Information Technology;;Institute of Plateau Meteorology, China Meteorological Administration, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province;;Chengdu/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu;;Chengdu, ;; 610225;;610072.; Qin Ningsheng, Institute of Plateau Meteorology, China Meteorological Administration, Chengdu/Heavy Rain and Drought-Flood Disasters in Plateau and Basin, Key Laboratory of Sichuan Province, Chengdu, Sichuan 610072, China.; Liu Xisheng, Hydrology and Water Resou...
推荐引用方式 GB/T 7714	Li Jinjian,Wang Shu,Qin Ningsheng,et al. Vegetation Index Reconstruction and Linkage with Drought for the Source Region of the Yangtze River Based on Tree-ring Data[J],2021,31(4):1002-0063.
APA	Li Jinjian,Wang Shu,Qin Ningsheng,Liu Xisheng,&Jin Liya.(2021).Vegetation Index Reconstruction and Linkage with Drought for the Source Region of the Yangtze River Based on Tree-ring Data.中国地理科学(英文版),31(4),1002-0063.
MLA	Li Jinjian,et al."Vegetation Index Reconstruction and Linkage with Drought for the Source Region of the Yangtze River Based on Tree-ring Data".中国地理科学(英文版) 31.4(2021):1002-0063.