Impacts of land use change on hydrological processes in the Maying River basin, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	Impacts of land use change on hydrological processes in the Maying River basin, China
	Genxu Wang（王根绪） ; Yu Zhang ; Guimin Liu ; Lin Chen
刊名	Science in China Series D: Earth Sciences
	2006
卷号	29 期号:10 页码:1098-1110
关键词	land-use change
合作状况	其它
英文摘要	Since the 1960s, dramatic changes have taken place in land-use patterns characterized by the persistent expansion of cultivated land and a continuous decrease in natural woodland and grassland in the arid inland river basins of China. It is very important to assess the effects of such land-use changes on the hydrological processes so vital for water resource management and sustainable development on the catchment scale. The Maying River catchment, a typical arid inland watershed located in the middle of the Hexi Corridor in northwest China, was the site chosen to investigate the hydrological responses to land-use changes. The annual runoff, base flow, maximum peak flow, and typical seasonal runoff in both spring and autumn flood periods were selected as the variables in the hydrological processes. Statistical-trend analysis and curvilinear regression were utilized to detect the trends in hydrological variables while eliminating the climatic influence. The relationship between cultivated land-use and hydrological variables was analyzed based on four periods of land-use variation data collected since 1965. A runoff model was established composed of two factors, i.e., cultivated land use and precipitation. The impact of land use changes, especially in the large areas of upstream woodland and grassland turned into cultivated lands since 1967, has resulted in a mean annual runoff decrease of 28.12%, a base flow decline of 35.32%, a drop in the maximum peak discharge of 35.77%, and mean discharge decreases in spring and autumn of 36.05% and 24.87% respectively, of which the contribution of cultivated land expansion to the influence of annual runoff amounts to 77%–80%, with the contribution to the influence of spring discharge being 73%–81%, and that to the influence of base flow reaching 62%–65%. Thus, a rational regulation policy of land use patterns is vitally important to the sustainable use of water resources and the proper development of the entire catchment.
语种	英语
公开日期	2010-11-11
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/2513]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）
推荐引用方式 GB/T 7714	Genxu Wang,Yu Zhang,Guimin Liu,et al. Impacts of land use change on hydrological processes in the Maying River basin, China[J]. Science in China Series D: Earth Sciences,2006,29(10):1098-1110.
APA	Genxu Wang,Yu Zhang,Guimin Liu,&Lin Chen.(2006).Impacts of land use change on hydrological processes in the Maying River basin, China.Science in China Series D: Earth Sciences,29(10),1098-1110.
MLA	Genxu Wang,et al."Impacts of land use change on hydrological processes in the Maying River basin, China".Science in China Series D: Earth Sciences 29.10(2006):1098-1110.