Impact 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）

	Impact of land-use change on hydrological processes in the Maying River basin, China
	Wang Genxu1,3 ; Zhang Yu 2; Liu Guimin 2; Chen Lin 3
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006-10-01
卷号	49 期号:10 页码:1098-1110
关键词	land-use change and inland river catchment hydrological process impact Maying River
ISSN号	1006-9313
通讯作者	Wang Genxu
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 and 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 and 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	CATCHMENT ; CLIMATE ; SNOWMELT ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000242000600009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10505]
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）成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Resource & Environm Sch, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang Genxu,Zhang Yu,Liu Guimin,et al. Impact of land-use change on hydrological processes in the Maying River basin, China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(10):1098-1110.
APA	Wang Genxu,Zhang Yu,Liu Guimin,&Chen Lin.(2006).Impact of land-use change on hydrological processes in the Maying River basin, China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(10),1098-1110.
MLA	Wang Genxu,et al."Impact of land-use change on hydrological processes in the Maying River basin, China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.10(2006):1098-1110.