近60年杂木河流域年径流-泥沙变化关系研究  

Study on the relationship between annual runoff and sediment change in Zamu River basin in recent 60 years

作　　者：王海峰 WANG Haifeng(Water Resources Utilization Center of Shiyang River Basin,Department of Water Resources of Gansu Province,Wuwei 733000,China)

机构地区：[1]甘肃省水利厅石羊河流域水资源利用中心,甘肃武威733000

出　　处：《水利建设与管理》2023年第4期57-62,共6页Water Conservancy Construction and Management

摘　　要：河流泥沙是水土保持成效的主要表征元素。准确掌握径流-泥沙关系,对流域河道清淤治理、水资源质量评价具有重要意义。本文采用Pearson积矩相关系数法、Spearman秩相关法,对杂木河径流-泥沙相关性进行分析,采用线性回归法、滑动平均法、Mann-Kendall法、Mann-Whitney法对径流-泥沙年际变化趋势显著性及序列突变年份进行检验。研究表明:径流量年内分配极不均,年内最大径流与最大泥沙不同步,Pearson积矩相关系数法获得的相关系数R=0.3851,Spearman积矩相关系数法获得的相关系数Rs=0.5233,相关性较差;径流量在1960年、2004年、2005年、2009年、2010年序列发生不显著跳跃且整体出现逐年减少趋势,输沙量变化呈现不显著增加趋势,跳跃年份在1962年;人类活动对杂木河流域泥沙的影响很大,造成径流-泥沙趋势出现极端情况。本次研究收集了大量资料,得到了很多成果,可为今后杂木河流域水沙治理提供有力的数据支持。River sediment is the main characteristic element of soil and water conservation effectiveness.Accurately mastering the relationship between runoff and sediment is of great significance for river channel dredging and water resource quality evaluation in the basin.In this paper,Pearson product-moment correlation coefficient method and Spearman rank correlation method are used to analyze the correlation between runoff and sediment in Zamu River.Linear regression method,moving average method,Mann-Kendall and Mann-Whitney methods are used to test the significance of inter-annual variation trend of runoff sediment and the year of sequence mutation.The results show that the annual distribution of runoff is extremely uneven,and the maximum runoff and maximum sediment are not synchronized.The correlation coefficient of Pearson product-moment method is R=0.3851,and the correlation coefficient of Spearman method is R s=0.5233,indicating poor correlation.The runoff shows a decreasing trend in 1960,2004,2005,2009,and 2010 without significant jumps,while the sediment runoff shows a non-significant increasing trend,with a jump year in 1962.Human activities have a great impact on the sediment in Zamu River Basin,resulting in extreme runoff sediment trend.This study has collected a large amount of data and obtained a lot of results,which can provide strong data support for water and sediment control in Zamu River Basin in the future.

关 键 词：径流量 输沙量 趋势检验 

分 类 号：TV214[水利工程—水文学及水资源]