水资源与水工程学报Issue(1)：52-57,6.DOI:10.11705/j.issn.1672-643X.2015.01.010
近年来青海三江源区河川径流变化特征及趋势分析
Variation characteristics and trend analysis of runoff at the source regions of the three river in Qinghai during recent years
摘要
Abstract
According to hydrological surveying data of 57 years of from 1956 to 2012, this paper used the methods such as dist anc average analysis, concentration rate, concentration period, coefficient of uni-formity to analyze runoff variation feature and trend of the source regions of the three river since the eco-logical protection project wasimplemented in 2005.The results showed that space runoff distribution of the source regions of the three river increased from south to north from 2005 to 2012;distance average of runoff decreased from southeast to northwest from 2005 to 2012 , the maximum was in source area of the Yangtze River, distance average was more than 80%, the minimum was in source area in southeastern re-gions, distance average was in about 10%;the runoff concentration rate, coefficient of uniformity presen-ted decreasing trend, and the concentration period was delayed.The source area runoff was in overall wet station from 2005 to 2012.The runoff of each station has significantly increase more than annual average. The runoff has clear upward trend in Yangtze River, and has no significant upward or downward trend in the Lancang River and the Yellow River source region during 1956 to 2012 .关键词
河川径流量/径流变化/集中度/集中期/生态保护/青海三江源Key words
river runoff/runoff variation/concentration rate/concentration period/ecological protec-tion/the source regions of the three river of Qinghai Province分类
天文与地球科学引用本文复制引用
孙永寿,段水强,李燕,曹广超..近年来青海三江源区河川径流变化特征及趋势分析[J].水资源与水工程学报,2015,(1):52-57,6.基金项目
国家自然科学基金项目 （）
