气候变化领域集成服务门户(CCPortal): The relative role of climate change and human activities in the desertification process in Yulin region of northwest China

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DOI	10.1007/s10661-011-2488-6
	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
发表日期	2012
ISSN	0167-6369
卷号	184 期号:12
英文摘要	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.
关键词	Desertification Spatiotemporal relationship between vegetation and climate Climate change Human activities Relative role Yulin region
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111660
作者单位	Lanzhou Jiaotong Univ, Math Phys & Software Engn Sch, Lanzhou 730070, Gansu Province, Peoples R China
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]. 中国科学院西北生态环境资源研究院,2012,184(12).
APA	Wang, Tao,Sun, Jian-guo,Han, Hui,&Yan, Chang-zhen.(2012).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).
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(2012).