干旱区生态环境知识资源中心(Arid): The Relationship between Normalized Difference Vegetation Index (NDVI) and Climate Factors in the Semi-arid Region: A Case Study in Yalu Tsangpo River Basin of Qinghai-Tibet Plateau

Arid

	The Relationship between Normalized Difference Vegetation Index (NDVI) and Climate Factors in the Semi-arid Region: A Case Study in Yalu Tsangpo River Basin of Qinghai-Tibet Plateau
	Guo Bing; Zhou Yi; Wang Shixin; Tao Heping
来源期刊	Journal of Mountain Science
ISSN	1672-6316
出版年	2014
卷号	11 期号:4 页码:926-940
英文摘要	The Yalu Tsangpo River basin is a typical semi-arid and cold region in the Qinghai-Tibet Plateau, where significant climate change has been detected in the past decades. The objective of this paper is to demonstrate how the regional vegetation, especially the typical plant types, responds to the climate changes. In this study, the model of gravity center has been firstly introduced to analyze the spatial-temporal relationship between NDVI and climate factors considering the time-lag effect. The results show that the vegetation grown has been positively influenced by the rainfall and precipitation both in moving tracks of gravity center and time-lag effect especially for the growing season during the past thirteen years. The herbs and shrubs are inclined to be influenced by the change of rainfall and temperature, which is indicated by larger positive correlation coefficients at the 0.05 confidence level and shorter lagging time. For the soil moisture, the significantly negative relationship of NDV-PDI indicates that the growth and productivity of the vegetation are closely related to the short-term soil water, with the correlation coefficients reaching the maximum value of 0.81 at Lag 0-1. Among the typical vegetation types of plateau, the shrubs of low mountain, steppe and meadow are more sensitive to the change of soil moisture with coefficients of -0.95, -0.93, -0.92, respectively. These findings reveal that the spatial and temporal heterogeneity between NDVI and climatic factors are of great ecological significance and practical value for the protection of eco-environment in Qinghai-Tibet Plateau.
英文关键词	Climate change Gravity center Correlation coefficients Vegetation productivity Time-lag effect
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5196265
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335388
作者单位	Guo Bing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China.; Zhou Yi, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China.; Wang Shixin, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China.; Tao Heping, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China.
推荐引用方式 GB/T 7714	Guo Bing,Zhou Yi,Wang Shixin,et al. The Relationship between Normalized Difference Vegetation Index (NDVI) and Climate Factors in the Semi-arid Region: A Case Study in Yalu Tsangpo River Basin of Qinghai-Tibet Plateau[J],2014,11(4):926-940.
APA	Guo Bing,Zhou Yi,Wang Shixin,&Tao Heping.(2014).The Relationship between Normalized Difference Vegetation Index (NDVI) and Climate Factors in the Semi-arid Region: A Case Study in Yalu Tsangpo River Basin of Qinghai-Tibet Plateau.Journal of Mountain Science,11(4),926-940.
MLA	Guo Bing,et al."The Relationship between Normalized Difference Vegetation Index (NDVI) and Climate Factors in the Semi-arid Region: A Case Study in Yalu Tsangpo River Basin of Qinghai-Tibet Plateau".Journal of Mountain Science 11.4(2014):926-940.