鄱阳湖出口近10年水沙特征及变化初析  

Water and sediment characteristics and changes at Poyang lake export in the past decade

作　　者：殷环环 张航 王悦 YIN Huanhuan;ZHANG Hang;WANG Yue(Hydrological Bureau of Yangtze River Water Conservancy Commission Hydrological and Water Resources Survey Bureau of the Lower Reaches of the Yangtze River,Nanjing Jiangsu,210037,China)

机构地区：[1]长江水利委员会水文局长江下游水文水资源勘测局,江苏南京210037

出　　处：《江西水利科技》2024年第1期31-35,共5页Jiangxi Hydraulic Science & Technology

摘　　要：利用湖口水文站2012~2021年实测水沙资料,分析近10年鄱阳湖出口水沙基本特征及变化趋势,并对变化原因进行初步分析。结果表明:近10年鄱阳湖出湖输沙量呈减小趋势,鄱阳湖出湖年输沙量和含沙量出现明显的突变点在2017年左右;长江倒灌进入鄱阳湖的水量和沙量呈减小趋势,影响了出湖径流量和输沙量年内分配,但对全年鄱阳湖出湖水量和输沙量影响较弱;鄱阳湖区的采砂活动、河道冲刷对出湖输沙量影响较大。Based on the measured water and sand data of Hukou hydrological station from 2012 to 2021,the basic characteristics and change trend of water and sand at the outlet of Poyang lake in the past decade and the reasons for the change were preliminarily analyzed.The results showed that the amount of sand transport out of Poyang lake showed a decreasing trend in the past decade,and the annual sand transport and sand content of Poyang lake showed obvious mutation points around 2017.The amount of water and sand flowing into Poyang lake from the Yangtze river showed a decreasing trend,which affected the distribution of outflow runoff and sand transport during the year,but had a weak impact on the annual water volume and sand transport volume of Poyang lake.Sand mining activities and river erosion in Poyang lake area have a great impact on the amount of sand transported out of the lake.

关 键 词：鄱阳湖 水沙特征 趋势分析 倒灌 

分 类 号：TV66[水利工程—水利水电工程]