鉴江干流水沙变化探讨

Study on the Change of Runoff and Sediment in the Trunk of Jianjiang River

根据鉴江干流主要控制水文站化州、高州站及罗江主要控制水文站合江站的实测径流量和输沙量资料,用Mann-Kendall法、双累积曲线法及Pearson相关分析法等,阐析近20年鉴江不同时段、不同河段水沙变化情况。结果表明:自2010年实施《广东省鉴江流域水资源分配方案》后,径流量、输沙量呈减小或总体平稳趋势,且水沙关系相关密切。

According to the measured runoff and sediment discharge data of Huazhou station and Gaozhou station,which are the main control hydrological stations in the main stream of Jianjiang River,and Hejiang station,which is the main control hydrological station in Luojiang River,the changes of water resources management and water sediment relationship in different periods and different river sections in recent 20 years are analyzed by using Mann Kendall method,double cumulative curve method and Pearson correlation analysis.The results show that,since the implementation of the water resources allocation plan of Jianjiang River Basin in Guangdong Province in 2010,the runoff and sediment transport show a decreasing or generally stable trend,and the relationship between water and sediment is closely related.