钦江流域历史径流泥沙演变规律分析  

Analysis on the Evolution Law of Historical Runoff and Sedimentin Qinjiang River Basin

作　　者：欧芳兰 邓建明 卢远 莫剑[4] 杨钰文 韦丽珍 

机构地区：[1]广西沿海水文水资源局,广西钦州535000 [2]南宁师范大学地理科学与规划学院,广西南宁530001 [3]北部湾环境演变与资源利用教育部重点实验室,广西南宁530001 [4]南宁市勘察测绘地理信息院,广西南宁530022

出　　处：《大众科技》2020年第10期15-17,28,共4页Popular Science & Technology

基　　金：广西科技重点研发计划(AB16380318)。

摘　　要：借助Mann-Kendall检验法和双累积曲线法,结合钦江流域陆屋水文站的实测年平均流量和输沙量资料,探讨57年来钦江流域长时间序列变化特征的差异,以及不同时段水沙波动规律。结果表明:钦江流域1957-2016年的年平均流量序列未发生突变,呈现周期性稳定变化规律,最大年平均流量出现在1970-1971年间,为59.3 m^3/s。而输沙量在进入2001年前后持续低于多年平均值上下波动,出现断崖式跳跃,最大输沙量出现在1981年,为69.06万t。With the help of the Mann-Kendall test method and the double cumulative curve method,combined with the measured annual average discharge and sediment transport data of Luwu Hydrological Station in the Qinjiang River Basin,this paper discusses the difference of long-time series variation characteristics and the fluctuation law of water and sediment in different periods in Qinjiang River Basin in the past 57 years.The results show that the annual average flow sequence in the Qinjiang River Basin from 1957 to 2016 did not change abruptly,showing a cyclical and stable change pattern.The maximum annual average flow rate appeared between 1970 and 1971,at 59.3m^3/s.The amount of sediment discharge continued to fluctuate below the multi-year average before and after 2001,and there was a cliff jump.The maximum amount of sediment discharge appeared in 1981,which was 690,600 tons.

关 键 词：年平均流量 输沙量 Mann-Kendall检验法 双累积曲线法 

分 类 号：TV14[水利工程—水力学及河流动力学]