1956年~2015年渭河流域径流年内分配特征分析  

Analysis of Annual Runoff Distribution Characteristics in Weihe River Basin From 1956 to 2015

作　　者：李斌 王莉 郝晓静 Li Bin;Wang Li;Hao Xiaojing(Shaanxi Provincial Water Conservancy Information Publicity and Education Center,Xi’an,710004,Shaanxi;Shaanxi Provincial River Reservoir Work Center,Xi’an,710018,Shaanxi;Shaanxi Provincial Urban and Rural Water Supply Safety Center,Xi’an,710004,Shaanxi)

机构地区：[1]陕西省水利信息宣传教育中心,陕西西安710004 [2]陕西省江河水库工作中心,陕西西安710018 [3]陕西省城乡供水安全中心,陕西西安710004

出　　处：《陕西水利》2021年第1期34-38,共5页Shaanxi Water Resources

摘　　要：选取渭河中下游以及部分支流为研究区域,以渭河中下游林家村、魏家堡、咸阳、临潼和华县五站为研究对象,分析流域径流量在年际、年内、季节等分布规律,分析其变化趋势及特征。结果表明:渭河干流各水文站年径流量20世纪60年代较大;70年代减少;80年代有所增加;90年代急剧减少;21世纪以来有所增大,但仍然小于多年平均值;渭河干流5站年径流量变化呈现一致性,四季径流量、汛期及非汛期径流量均呈现减少趋势。除冬季外,渭河干流下游站径流量的减少趋势大于上游站的减少趋势;越接近河口的水文站,径流量减少的趋势越明显。汛期及非汛期的径流量减少趋势和年径流量减少的趋势一致;年实测径流量、汛期和非汛期的径流量均呈现为显著性减少趋势。In this paper,the middle and lower reaches of Weihe River and some tributaries are selected as the research area,and the five stations of the middle and lower reaches of Weihe River,Linjiacun,Weijiabu,Xianyang,Lintong and Huaxian are taken as the research objects to analyze the distribution law of runoff volume in the basin in terms of year,year and season,etc.,and analyze its variation trend and characteristics.The results show that the annual runoff of the main stream of Weihe River is larger in the 1960s.In the 1970s;Increased in the 1980s;Sharply reduced in the 1990s;It has increased since the new century,but it is still less than the multi-year average.The annual runoff variation of the five stations of Weihe river trunk stream was consistent,and the runoff in four seasons,flood season and non-flood season all showed a decreasing trend.Except in winter,the trend of runoff reduction in the downstream stations of Weihe river trunk stream was greater than that in the upstream stations.The closer the hydrological station is to the estuary,the more obvious the trend of runoff reduction is.The trend of runoff decrease in flood season and non-flood season is consistent with that of annual runoff decrease.The annual measured runoff,flood season and non-flood season all showed a significant decrease trend.

关 键 词：径流 年内分配 变化特征 分析 渭河 

分 类 号：TV121[水利工程—水文学及水资源]