干旱区生态环境知识资源中心(Arid): 近10年西藏高原土地沙漠化动态变化与发展态势

Arid

	近10年西藏高原土地沙漠化动态变化与发展态势
其他题名	Dynamic Changes and Developmental Trends of the Land Desertification in Tibetan Plateau over the Past 10 Years
	李森 1; 杨萍 2; 高尚玉 3; 陈怀顺 2; 姚发芬 2
来源期刊	地球科学进展
ISSN	1001-8166
出版年	2004
卷号	19 期号:1 页码:63-70
中文摘要	依据生态基准面的理论制定了西藏高原沙漠化土地分类分级体系.运用遥感、野外调查与GIS 等方法,对20世纪90年代沙漠化动态变化进行了研究,研究结果表明:西藏高原沙漠化扩大2 151.68 km2,升级率达2.3%,动态度为0.154%,沙漠化程度明显加重,形成沙漠化发展、稳定及逆转三种类型区.高原沙漠化发展演化的内在驱动力是以气候为主的自然因素,外在驱动力则是人为的"三滥"活动.预测到2005年、2010年沙漠化仍将缓慢发展.西藏高原是我国沙漠化正在发展-强烈发展的区域,发展态势严峻.高原沙漠化防治的基本策略应是全面保护、综合治理、适度开发、协调发展.
英文摘要	The theory of ecological datum plane was employed in establishing the classification and grade system of desertification lands in Tibetan Plateau, which includes four grades with ten types as well as one grade with three types of potential desertification lands. In addition, some research methods and technique such as remote sensing, field survey and GIS were used. The desertification dynamic changes during the 1990s in Tibetan Plateau were studied. The results show that the area of desertification lands has increased 2151. 68 km2 in Tibetan Plateau over the past 10 years. The upgrading ratio of desertification is 2.3% and the dynamic degree is 0.154% , falling into the slowly development type. As the types of extremely sever, sever and medium desertification lands respectively increased 23.13% and 1.61% , reaching 2650.30km~2 in area, the desertification degree in the region is obviously getting worse. The desertification lands vary gready in their development and reversal. Different desertification regions in Tibetan Plateau, like developmental regions, stable regions and island shape reversal regions for desertification can be recognized. The climatic changes may be a main natural factor resulting in the desertification increase in Tibetan Plateau. The unreasonable human activities such as excessive reclamation, grazing and firewood collecting accelerated the desertification in this plateau. It is predicted that the desertification in Tibetan Plateau will still develop slowly until 2005, even until 2010. Therefore, Tibetan Plateau is suffering from desertification or even more intense desertification. The basic strategies of desertification prevention were put forward. Comprehensive protection of lands from excessive use, synthetical prevention and cure of desertification lands, and reasonable exploitation can effectively reverse the desertification, which will produce harmonious development in the plateau.
中文关键词	西藏高原 ; 沙漠化 ; 动态变化 ; 发展态势
英文关键词	tibetan plateau desertification dynamic changes development trends
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:1499812
来源机构	中国科学院西北生态环境资源研究院 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204909
作者单位	1.佛山大学旅游与资源环境系, 佛山, 广东 528000, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 3.北京师范大学中国沙漠研究中心, 北京 100875, 中国
推荐引用方式 GB/T 7714	李森,杨萍,高尚玉,等. 近10年西藏高原土地沙漠化动态变化与发展态势[J]. 中国科学院西北生态环境资源研究院, 北京师范大学,2004,19(1):63-70.
APA	李森,杨萍,高尚玉,陈怀顺,&姚发芬.(2004).近10年西藏高原土地沙漠化动态变化与发展态势.地球科学进展,19(1),63-70.
MLA	李森,et al."近10年西藏高原土地沙漠化动态变化与发展态势".地球科学进展 19.1(2004):63-70.