干旱区生态环境知识资源中心(Arid): 黄土高原水蚀荒漠化发生特点及其防治模式

Arid

	黄土高原水蚀荒漠化发生特点及其防治模式
其他题名	Study on Mechanism of Water-eroded Desertification and Its Control in the Loess Plateau
	周忠学 1; 孙虎 1; 李智佩 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2005
卷号	22 期号:1 页码:29-34
中文摘要	黄土高原是我国水土流失最严重的地区,强烈的水土流失直接导致了土地质量下降和荒漠化景观的出现.研究表明,目前有轻度以上水蚀荒漠化土地2.71*105 km2,占总面积的42.89%,其中严重水蚀荒漠化占11.02%,水蚀荒漠化越来越严重.通过对其成因和产生机制的探讨,对典型区域提出针对性的防治模式.
英文摘要	The Loess Plateau is a region where soil erosion is the most serious in China. The serious soil erosion in the plateau results directly in the reduction of land quality and the occurrence of desertified landscapes. The area of soil erosion in the Loess Plateau is 4.03 * 105 km2, and it is estimated that the annual loss of topsoil in the plateau is 5.0 * 109 t. In the plateau land degradation occurs, the productivity of lands and the area of usable lands are reduced, and the ecosystems are degenerated due to the serious soil erosion caused by the irrational exploitation and utilization of water and land resources. Some study results reveal that the area of water-eroded desertified lands in the plateau is currently 2.705 * 105 km2 and occupies 42.89% of the total area, in which the area of seriously water-eroded desertified lands occupies 11.025%, and the water-eroded desertification becomes more and more serious. In this paper, the formation causes and the occurrence mechanism of water-eroded desertification are researched. The results show that the water-eroded desertification is still in development and can not be reversed due to the severe natural environment although the situation has been improved in some regions. Regionally, the water-eroded desertification becomes more serious northward and westward. The water-eroded desertification is induced and promoted by extensive human activities, such as the excessive reclamation and grazing as well as the mining and urban construction. Therefore, some measures are put forward for controlling land desertification, they are to enhance the dynamics of ecological regeneration, reduce the water erosion by building some projects and improving farming techniques, work out the feasible policies, regulate the current social and economic development modes, etc.
中文关键词	水蚀荒漠化 ; 机制 ; 防治模式 ; 黄土高原
英文关键词	water-eroded desertification mechanism control mode the Loess Plateau
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:1878071
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206212
作者单位	1.陕西师范大学,旅游与环境学院, 西安, 陕西 710062, 中国; 2.西安地质矿产研究所, 西安, 陕西 710061, 中国
推荐引用方式 GB/T 7714	周忠学,孙虎,李智佩. 黄土高原水蚀荒漠化发生特点及其防治模式[J]. 陕西师范大学,2005,22(1):29-34.
APA	周忠学,孙虎,&李智佩.(2005).黄土高原水蚀荒漠化发生特点及其防治模式.干旱区研究,22(1),29-34.
MLA	周忠学,et al."黄土高原水蚀荒漠化发生特点及其防治模式".干旱区研究 22.1(2005):29-34.