长江源区近年水沙变化趋势及成因分析OA北大核心
Runoff and sediment variation trend in source region of Yangtze River in recent years and cause analysis
依据长江源区1956~2012年水文、气象数据,采用距平分析、集中度、集中期、不均匀系数等方法,分析了该地区近年降水、径流、泥沙变化趋势及其原因. 结果显示:2005~2012年期间,长江源区降水量、降雨日数增加,降雨强度亦增强,降水集中度、不均匀系数略有减小;源区径流量明显增加,径流集中度、不均匀系数明显减小,集中期有所推后,枯季径流占全年径流的比例明显提高;河流泥沙年内趋于均匀,含沙量、输沙量呈明显减小趋势. 上述径流变化以及下垫面生态植被覆…查看全部>>
On the basis of the hydrological and meteorological data in the source region of Yangtze River from 1956 to 2012, the distance average analysis, concentration degree, concentration period, non-uniform coefficient method are adopted to ana-lyze the variation trends of precipitation, runoff, sediment in recent years and the variation causes are studied as well. The results show that from 2005 to 2012, the precipitation, rainy days and the rainfall intensity in…查看全部>>
孙永寿;段水强
青海省水文水资源勘测局,青海 西宁810001青海省水文水资源勘测局,青海 西宁810001
建筑与水利
降水径流泥沙变化趋势长江源区
precipitationrunoffsedimentvariation trendssource region of Yangtze River
《人民长江》 2015 (9)
青海省三十年来湖泊演化特征及对气候变化和人类活动的响应
17-22,6
国家自然科学基金资助项目(41261004)
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