IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2014  > Vol11 No.4
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 Shi-xin; TAO He-ping
Corresponding AuthorZHOU Yi
2014-07
Source PublicationJournal of Mountain Science
Volume11Issue:4Pages:926-940
AbstractThe 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.
KeywordClimate Change Gravity Center Correlation Coefficients Vegetation Productivity Time-lag Effect
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6996
CollectionJournal of Mountain Science_Journal of Mountain Science-2014_Vol11 No.4
Corresponding AuthorZHOU Yi
Recommended Citation
GB/T 7714
GUO Bing,ZHOU Yi,WANG Shi-xin,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]. Journal of Mountain Science,2014,11(4):926-940.
APA GUO Bing,ZHOU Yi,WANG Shi-xin,&TAO He-ping.(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.
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