干旱区生态环境知识资源中心(Arid): 民勤盆地沙漠化、贫困化与水资源开发利用

Arid

	民勤盆地沙漠化、贫困化与水资源开发利用
其他题名	The Impact of Water Resources Development on Desertification and Pauperization in the Minqin Basin
	马金珠 1; 王刚 2; 李丁 1; 颉耀文 1
ISSN	1000-3037
出版年	2006
卷号	21 期号:4 页码:551-558
中文摘要	以3S技术与PRA工具,通过对民勤盆地水资源状况的变化与沙漠化、贫困化发生发展规律对比研究,表明自然条件恶劣、基础设施弱是沙漠化、贫困化产生的内在因素,而人类活动则是强大的驱动力.石羊河流域武威盆地不合理的水资源利用造成进入民勤盆地水量日益减少,从20世纪50-70年代的410^8～6108m^3下降到目前的0.5*10^8m^3,民勤盆地内大规模开采地下水导致水位下降达30m,同时造成地下水水质恶化、植被退化与沙漠化.沙漠化导致了贫困,贫困反过来加剧沙漠化,两者不断恶性循环.为此,要加强流域内水资源管理,严禁超采地下水;以退耕还林,种草养畜为出发点促进流域产业结构调整和节水;加大资金投入和科技扶贫,实现可持续发展.
英文摘要	Based on the GIS,RS,GPS and PRA,the impact of water and pauperization in the Minqin basin is studied.The water in the resources on desertification Shiyang River, which is the main river feeding the basin,is over-used for irrigation with little or no surface water now reaching the Minqin Basin itself.Large-scale water conservancy construction and water resources exploitation were carried out with the dramatic growth of population beginning in 1949 when new P.R.China was founded.In 1995,the total water storage of 23 reservoirs was about 450* 10^6m^3.Accordingly,the canalled surface runoff amounted to 1.406 *10^9m^3 yearly in the 1990s, being about 89% of the total runoff.As a result farms in the Minqin Basin are now dependent on the pumping of groundwater for both irrigation and drinking purposes.This has caused a gradual reduction in the level of groundwater and a huge lake,approximately 500km^2 in extent in the centre of the basin has now disappeared completely.Freshwater can now only be obtained by pumping from wells of 300m deep and the number of wells has reached 10 000.The increasing utilization of water resources has led to great environmental problems such as groundwater exhausting,water level decline,deterioration of water quality,vegetation degradation,soil salinization and land desertification,which in turn result in pauperization.It is necessary to step up a higher stage of water management and increase the water saving techniques.A water laws is needed to strictly forbid excessive mining of ground water and provide unified development and allocation within the river basin for socioeconomic development and fragile ecological protection. Meanwhile,it is a possible way to control desertification,eliminate pauperization,convert farmland into forest and plant grass for stock raising.
中文关键词	水资源 ; 沙漠化 ; 贫困化 ; 种草养畜 ; 民勤盆地
英文关键词	PRA water resources PRA desertification pauperization stock raising Minqin Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2460102
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220603
作者单位	1.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国; 2.甘肃省兰州市气象局, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	马金珠,王刚,李丁,等. 民勤盆地沙漠化、贫困化与水资源开发利用[J]. 兰州大学,2006,21(4):551-558.
APA	马金珠,王刚,李丁,&颉耀文.(2006).民勤盆地沙漠化、贫困化与水资源开发利用.,21(4),551-558.
MLA	马金珠,et al."民勤盆地沙漠化、贫困化与水资源开发利用".21.4(2006):551-558.