Long-term change of seasonal snow cover and its effects on river runoff in the Tarim River basin, northwestern China

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Long-term change of seasonal snow cover and its effects on river runoff in the Tarim River basin, northwestern China
	Xu ; Changchun ; Chen ; Yaning ; Hamid ; Yimit ; Tashpolat ; Tiyip ; Yapeng ; Ge ; Hongtao ; Li ; Weihong
刊名	HYDROLOGICAL PROCESSES
	2009
卷号	23 期号:14 页码:2045-2055
关键词	WESTERN NORTH-AMERICA CLIMATE-CHANGE WATER-RESOURCES EOF ANALYSIS STREAMFLOW VARIABILITY SWISS ALPS IMPACT PRECIPITATION TEMPERATURE TURKEY
ISSN号	0885-6087
通讯作者	Xu, CC, Xinjiang Univ, Sch Resources & Environm Sci, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China
中文摘要	Spatio-temporal variation of snow depth in the Tarim River basin has been studied by the empirical orthogonal function (EOF) based on the data collected by special sensor microwave/imager (SSM/I) and scanning multichannel microwave radiometer (SMMR) during the period from 1979 to 2005. The long-term trend of snow depth and runoff was presented using the Mann-Kendall non-parametric test, and the effects of the variations of snow depth and climatic factors on runoff were analysed and discussed by means of the regression analysis. The results Suggested that the snow depth variation on the entire basin was characterised by four patterns: all consistency, north-south contrast, north-middle-south contrast and complex. The first pattern accounting 39-13% of the total variance was dominant. The entire basin was mainly affected by one large-scale weather system. However, the spatial and temporal differences also existed among the different regions in the basin. The significant snow depth changes occurred mainly in the Aksu River basin with the below-normal snow depth anomalies in the 1980s and the above-normal snow depth anomalies in the 1990s. The long-term trend of snow depth was significant in the northwestern, western and southern parts of the basin, whereas the long-term trend of runoff was significant ill the northwestern and northeastern parts. The regression analysis revealed that the runoff of the rivers replenished by snow melt water and rainfall was related primarily to the Summer precipitation, followed by the summer temperature or the maximum snow depth in the cold season. Our results Suggest that snow is not the principal factor that contributes to the runoff increase in headstreams, although there was a slow increase in snow depth. It is the climatic factors that are responsible for the steady and continuous water increase in the headstreams. Copyright (C) 2009 John Wiley & Sons, Ltd.
学科主题	水文地理学及水资源
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10094]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Xu,Changchun,Chen,et al. Long-term change of seasonal snow cover and its effects on river runoff in the Tarim River basin, northwestern China[J]. HYDROLOGICAL PROCESSES,2009,23(14):2045-2055.
APA	Xu.,Changchun.,Chen.,Yaning.,Hamid.,...&Weihong.(2009).Long-term change of seasonal snow cover and its effects on river runoff in the Tarim River basin, northwestern China.HYDROLOGICAL PROCESSES,23(14),2045-2055.
MLA	Xu,et al."Long-term change of seasonal snow cover and its effects on river runoff in the Tarim River basin, northwestern China".HYDROLOGICAL PROCESSES 23.14(2009):2045-2055.