干旱区生态环境知识资源中心(Arid): The balance between supply and demand of water resources and the water-saving potential for agriculture in the hexi corridor

Arid

DOI	10.1007/s11769-002-0066-0
	The balance between supply and demand of water resources and the water-saving potential for agriculture in the hexi corridor
	Gao Qianzhao; Du Hulin; Zu Ruiping
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2002
卷号	12 期号:1 页码:23-29
英文摘要	The Hexi Corridor is an important base of agriculture development in Northwest China. According to re-cent statistics, there are 65.94 * 10~8m~3 of water resources available in the Hexi Corridor. At present, net consumption indevelopment and utilization is 43.33 * 10~8m~3. Water supply and demand reach a balance on the recent level of produc-tion, but loss of evaporation and evapotranspiration is as much as 25.69 * 10~8m~3. So net use efficiency of water resourcesis 59%. Based on analyzing balance between water and land considering ecological environment at present, there existsthe serious water shortage in the Shiyang River system where irrigation lands have overloaded. There is a comparative bal-ance between supply and demand of water resource in the Heihe River system; and the Sule River system has some sur-plus water to extend irrigation land. Use of agriculture water accounts for 83.3% and ecological forest and grass for 6.9%. The Hexi Corridor still has a great potential for water saving in agriculture production. Water-saving efficiency ofirrigation is about 10% by using such traditional technologies as furrow and border-dike irrigation and small check irriga-tion, and water-saving with plastic film cover and techniques of advanced sprinkler and drip/micro irrigation etc. cansave more than 60% of irrigated water. Incremental irrigation area for water-saving potential in the Hexi Corridor hasbeen estimated as 56% - 197% to original irrigation area. So the second water sources can be developed from water sav-ing agriculture in the Hexi Corridor under Development of the Western Part of China in large scale. This potential can berealized step by step through developing the water-saving measures, improving the ecological condition of oasis agricul-ture, and optimizing allocation of water resources in three river systems.
英文关键词	water resources balance between supply and demand water-saving potential of agriculture Hexi Corridor
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:1367135
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334836
作者单位	Gao Qianzhao, Cold and Arid Regions Environmental and Engineering Research Institute,the Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Du Hulin, Cold and Arid Regions Environmental and Engineering Research Institute,the Chinese Academy of Sciences, BeiJing 730000, China.; Zu Ruiping, Cold and Arid Regions Environmental and Engineering Research Institute,the Chinese Academy of Sciences, BeiJing 730000, China.
推荐引用方式 GB/T 7714	Gao Qianzhao,Du Hulin,Zu Ruiping. The balance between supply and demand of water resources and the water-saving potential for agriculture in the hexi corridor[J],2002,12(1):23-29.
APA	Gao Qianzhao,Du Hulin,&Zu Ruiping.(2002).The balance between supply and demand of water resources and the water-saving potential for agriculture in the hexi corridor.Chinese Geographical Science,12(1),23-29.
MLA	Gao Qianzhao,et al."The balance between supply and demand of water resources and the water-saving potential for agriculture in the hexi corridor".Chinese Geographical Science 12.1(2002):23-29.