干旱区生态环境知识资源中心(Arid): 西藏江两河中部流域地区土地沙漠化变化的驱动因素分析

Arid

	西藏江两河中部流域地区土地沙漠化变化的驱动因素分析
其他题名	Driving Factros of Sandy Desertification Change in the Middle Reaches of Yarlung Zangbo River and Its Two Tributaries in Xizang
	刘毅华 1; 董玉祥 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2003
卷号	23 期号:4 页码:355-360
中文摘要	土地利用／覆盖变化及其驱动力是当前研究的热点问题，现代土地沙漠化变化的机制及其驱动因素的研究更倍受关注。选择西藏"一江两河"中部流域地区为研究区域，依据该区1991年与1997年的两期土地沙漠化类型与面积数据，利用定量方法分析了同期土地沙漠化的发展变化与区内各种自然与人文因子间的数量关系，以定量辩识其变化的驱动因素。分析结果表明，该区近期土地沙漠化的变化是在多种气候因子、社会因子与经济因子共同驱动下自然变化过程与人为变化过程相互影响的结果，其中，自然驱动因素主要是风力与干旱程度，人为驱动因素主要是农作物播种面积与牲畜（超载）数量，但比较之下自然驱动因素的作用相对稍重，具有相对主导性。
英文摘要	In the research on the driving force of land use/cover change, the problem of mechanism and driving factor of sandy desertification change is a very important research point, and so far it has not been better resolved. Taking the middle reaches of Yarlung Zangbo River and its two tributaries in Xizang as the research region, this pa per makes use of the correlative analysis method to study the quantitative relationship of sandy desertification change and many kinds of natural and human factors that may influence the sandy desertification change, among which the driving factors of sandy desertification change can be found. The correlative analysis data are obtained from sandy desertification land investigation during 1990’s, social and economic statistic data from 1989 to 1997 and climatic data in the same time phase. The analysis results can be concluded that the recent change of sandy desertification in the research region from 1991 to 1997 is the result of mutual action of natural process and human process of sandy desertification. The influencing factors comprise climatic factors and social factors as well as economic factors, in which the natural driving factors are wind force and arid degree; the human driving factors are farmland area and livestock number. In all driving factors of sandy desertification change in the middle reaches of Yarlung Zangbo riv er and its two tributaries in Xizang from 1991 to 1997, the function of natural driving factors is more important, they play a leading role in the process of sandy desertification change.
中文关键词	土地沙漠化 ; 驱动因素 ; 一江两河中部流域 ; 西藏
英文关键词	sandy desertification driving factor the middle reaches of Yarlung Zangbo river and its two tributaries Tibet
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:1326550
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204661
作者单位	1.广州大学地理学系, 广州, 广东 510405, 中国; 2.中山大学国土资源与环境学系, 广州, 广东 510275, 中国
推荐引用方式 GB/T 7714	刘毅华,董玉祥. 西藏江两河中部流域地区土地沙漠化变化的驱动因素分析[J],2003,23(4):355-360.
APA	刘毅华,&董玉祥.(2003).西藏江两河中部流域地区土地沙漠化变化的驱动因素分析.中国沙漠,23(4),355-360.
MLA	刘毅华,et al."西藏江两河中部流域地区土地沙漠化变化的驱动因素分析".中国沙漠 23.4(2003):355-360.