干旱区生态环境知识资源中心(Arid): Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013

Arid

	Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013
	Gong Zhaoning; Zhao Shuyi; Gu Jinzhi
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2017
卷号	27 期号:2 页码:143-160
英文摘要	Climate change is one of the most important factors that affect vegetation distribution in North China. Among all climatic factors, drought is considered to have the most significant effect on the environment. Based on previous studies, the climate drought index can be used to assess the evolutionary trend of the ecological environment under various arid climatic conditions. It is necessary for us to further explore the relationship between vegetation coverage (index) and climate drought conditions. Therefore, in this study, based on MODIS-NDVI products and meteorological observation data, the Palmer Drought Severity Index (PDSI) and vegetation coverage in North China were first calculated. Then, the interannual variations of PDSI and vegetation coverage during 2001-2013 were analyzed using a Theil-Sen slope estimator. Finally, an ecoregion perspective of the correlation between them was discussed. The experimental results demonstrated that the PDSI index and vegetation coverage value varied over different ecoregions. During the period 2001-2013, vegetation coverage increased in the southern and northern mountains of North China, while it showed a decreasing trend in the Beijing-Tianjin-Tangshan City Circle area and suburban agricultural zone located in Hebei Province and Henan Province). Over 13 years, the climate of the northeastern part of North China became more humid, while in the southern part of North China, it tended to be dry. According to the correlation analysis results, 73.37% of North China showed a positive correlation between the vegetation coverage and climate drought index. A negative correlation was observed mainly in urban and suburban areas of Beijing, Tianjin, Hebei Province, and Henan Province. In most parts of North China, drought conditions in summer and autumn had a strong influence on vegetation coverage.
英文关键词	North China vegetation coverage PDSI ecoregion correlation analysis
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5911781
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335756
作者单位	Gong Zhaoning, College of Resource Environment & Tourism, Capital Normal University, Beijing Laboratory of Water Resources Security; Key Laboratory of 3D Information Acquisition and Application, Ministry of Education; Key Laboratory of Resources Environment and GIS of Beijing, Beijing 100048, China.; Zhao Shuyi, College of Resource Environment & Tourism, Capital Normal University, Beijing Laboratory of Water Resources Security; Key Laboratory of 3D Information Acquisition and Application, Ministry of Education; Key Laboratory of Resources Environment and GIS of Beijing, Beijing 100048, China.; Gu Jinzhi, College of Resource Environment & Tourism, Capital Normal University, Beijing Laboratory of Water Resources Security; Key Laboratory of 3D Information Acquisition and Application, Ministry of Education; Key Laboratory of Resources Environment and GIS of Beijing, Beijing 100048, China.
推荐引用方式 GB/T 7714	Gong Zhaoning,Zhao Shuyi,Gu Jinzhi. Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013[J],2017,27(2):143-160.
APA	Gong Zhaoning,Zhao Shuyi,&Gu Jinzhi.(2017).Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013.Journal of Geographical Sciences,27(2),143-160.
MLA	Gong Zhaoning,et al."Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013".Journal of Geographical Sciences 27.2(2017):143-160.