the relative role of climate change and human activities in the desertification process in yulin region of northwest china

ISCAS OpenIR

	the relative role of climate change and human activities in the desertification process in yulin region of northwest china
	Wang Tao; Sun Jian-guo; Han Hui; Yan Chang-zhen
	2011
发表期刊	Environmental Monitoring and Assessment
ISSN	0167-6369
卷号	184 期号:12 页码:1-9
摘要	To overcome the shortcoming of existing studies, this paper put forward a statistical vegetation-climate relationship model with integrated temporal and spatial characteristics. Based on this model, we quantitatively discriminated on the grid scale the relative role of climate change and human activities in the desertification dynamics from 1986 to 2000 in Yulin region. Yulin region's desertification development occurred mainly in the southern hilly and gully area and its reverse in the northwest sand and marsh area. This spatial pattern was especially evident and has never changed thoroughly. From the first time section (1986-1990) to the second (1991-1995), the desertification was developing as a whole, and either in the desertification development district or in the reverse district human activities' role was always occupying an overwhelmingly dominant position (they were 98.7% and 101.4%, respectively), the role of climate change was extremely slight. From the second time section (1991-1995) to the third (1996-2000), the desertification process was reaching a state of stability, in the desertification development district the role of climate change was nearly equivalent to that of human activities (they were 46.2% and 53.8% separately), and yet in the desertification reverse district, the role of human activities came up to 119.0%, the role of climate change amounted to -19.0%. In addition, the relative role of climate change and human activities possessed great spatial heterogeneity. The above conclusion rather coincides with the qualitative analysis in many literatures, which indicates that this method has certain rationality and can be utilized as a reference for the monitoring and studying of desertification in other areas. © 2011 Springer Science+Business Media B.V.; To overcome the shortcoming of existing studies, this paper put forward a statistical vegetation-climate relationship model with integrated temporal and spatial characteristics. Based on this model, we quantitatively discriminated on the grid scale the relative role of climate change and human activities in the desertification dynamics from 1986 to 2000 in Yulin region. Yulin region's desertification development occurred mainly in the southern hilly and gully area and its reverse in the northwest sand and marsh area. This spatial pattern was especially evident and has never changed thoroughly. From the first time section (1986-1990) to the second (1991-1995), the desertification was developing as a whole, and either in the desertification development district or in the reverse district human activities' role was always occupying an overwhelmingly dominant position (they were 98.7% and 101.4%, respectively), the role of climate change was extremely slight. From the second time section (1991-1995) to the third (1996-2000), the desertification process was reaching a state of stability, in the desertification development district the role of climate change was nearly equivalent to that of human activities (they were 46.2% and 53.8% separately), and yet in the desertification reverse district, the role of human activities came up to 119.0%, the role of climate change amounted to -19.0%. In addition, the relative role of climate change and human activities possessed great spatial heterogeneity. The above conclusion rather coincides with the qualitative analysis in many literatures, which indicates that this method has certain rationality and can be utilized as a reference for the monitoring and studying of desertification in other areas. © 2011 Springer Science+Business Media B.V.
收录类别	EI
关键词	Climate Models
部门归属	(1) Institute of Cold and Arid Regions Environmental and Engineering Research Chinese Academy of Sciences No.320 Donggang West Road Lanzhou 730000 China; (2) Mathematics Physics and Software Engineering School Lanzhou Jiaotong University No.88 Anning West Road Lanzhou 730070 China
语种	英语
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/16159
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Wang Tao,Sun Jian-guo,Han Hui,et al. the relative role of climate change and human activities in the desertification process in yulin region of northwest china[J]. Environmental Monitoring and Assessment,2011,184(12):1-9.
APA	Wang Tao,Sun Jian-guo,Han Hui,&Yan Chang-zhen.(2011).the relative role of climate change and human activities in the desertification process in yulin region of northwest china.Environmental Monitoring and Assessment,184(12),1-9.
MLA	Wang Tao,et al."the relative role of climate change and human activities in the desertification process in yulin region of northwest china".Environmental Monitoring and Assessment 184.12(2011):1-9.