2025 01 v.50 23-30
长江中下游干流含沙量变化特征
基金项目(Foundation):
国家自然科学基金长江水科学研究联合基金项目(U2040216);
上海市科委重点基金项目(22dz1202701)
邮箱(Email):
lcguo@sklec.ecnu.edu.cn;
DOI:
10.16239/j.cnki.0468-155x.2025.01.004
中文作者单位:
华东师范大学河口海岸学国家重点实验室;
摘要(Abstract):
由于气候变化和人类活动的影响，长江中下游干流的水沙过程发生显著变化。含沙量是反映水沙关系的重要指标，为了明晰新形势下长江中下游含沙量变化的特征，基于实测数据分析了含沙量的时空变化过程。受上游来沙减少影响和床沙粗化向下游传递，荆江河段含沙量极低，河床的泥沙补给作用减弱，洞庭湖和鄱阳湖等湖泊及支流的泥沙输入对中下游干流的贡献增加，对增大长江下游及河口的输沙量起到关键作用。
关键词(KeyWords):
长江中下游;含沙量恢复;支流湖泊;泥沙补给;床沙粗化
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参考文献
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[2] ZHOU J J,ZHANG M,LIN B L,et al.Lowland fluvial phosphorus altered by dams[J].Water Resources Research,2015,51(4):2211-2226.
[3] 水利部长江水利委员会.长江泥沙公报[M].武汉：长江出版社，2008-2022.
[4] 钱宁，万兆惠.泥沙运动力学[M].北京：科学出版社，1983:385-387.
[5] 郭小虎，李义天，渠庚，等.三峡工程蓄水后长江中游泥沙输移规律分析[J].泥沙研究，2014(5):11-17.
[6] 杨云平，张明进，李义天，等.长江三峡水坝下游河道悬沙恢复和床沙补给机制[J].地理学报，2016,71(7):1241-1254.
[7] 冯雪，夏军强，周美蓉，等.三峡水库运用后荆江段非均匀悬沙恢复特性[J].湖泊科学，2021,33(6):1898-1905.
[8] YANG X H,XIONG H B,LI D F,et al.Disproportional erosion of the middle-lower Yangtze River following the operation of the Three Gorges Dam [J].Science of the Total Environment,2023,859(P1):160264-160264.
[9] ZHENG S,AN C G,WANG H L,et al.The migration of the erosion center downstream of the Three Gorges Dam,China,and the role played by underlying gravel layer [J].Water Resources Research,2023,59(11):e2022WR034152.
[10] HE Z C,SUN Z H,LI Y T,et al.Response of the gravel-sand transition in the Yangtze River to hydrological and sediment regime changes after upstream damming [J].Earth Surface Processes and Landforms,2021,47(2):383-398.
[11] YANG S L,MILLIMAN J D,XU K H,et al.Downstream sedimentary and geomorphic impacts of the Three Gorges Dam on the Yangtze River [J].Earth-Science Reviews,2014,138:469-486.
[12] GUO L C,SU N,TOWNEND I,et al.From the headwater to the delta:A synthesis of the basin-scale sediment load regime in the Changjiang River [J].Earth-Science Reviews,2019,197:102900-102900.
[13] SUN J,ZHANG F Y,ZHANG X F,et al.Severely declining suspended sediment concentration in the heavily dammed Changjiang fluvial system [J].Water Resources Research,2021,57(11):e2021WR030370.
[14] CHEN Z Y,LI J F,SHEN H T,et al.Yangtze River of China:Historical analysis of discharge variability and sediment flux [J].Geomorphology,2001,41(2-3):77-91.
[15] 武汉水利电力学院.长江中下游水流挟沙力研究——兼论以悬移质为主的挟沙水流能量平衡的一般规律[J].泥沙研究，1959(2):54-73.
[16] 周美蓉，夏军强，邓珊珊，等.低含沙量条件下张瑞瑾挟沙力公式中参数确定及其在荆江的应用[J].水利学报，2021,52(4):409-419.
[17] 郭庆超.天然河道水流挟沙能力研究[J].泥沙研究，2006(5):45-51.
[18] GUO L C,HE Q.Freshwater flocculation of suspended sediments in the Yangtze River,China [J].Ocean dynamics,2011,61(2-3):371-386.
[19] GAO Y,CHEN L,ZHANG W,et al.Spatiotemporal variation in characteristic discharge in the Yangtze River downstream of the Three Gorges Dam [J].Science of the Total Environment,2021,785:147343-147343.
[20] GUO L C,SU N,ZHU C Y,et al.How have the river discharges and sediment loads changed in the Changjiang River basin downstream of the Three Gorges Dam?[J].Journal of Hydrology,2018,560:259-274.
[21] LAI X H,YIN D W,Finlayson B L,et al.Will river erosion below the Three Gorges Dam stop in the middle Yangtze?[J].Journal of Hydrology,2017,554:24-31.
[22] WU X,YUE Y,BORTHWICK A G L,et al.Mega-reservoir regulation:A comparative study on downstream responses of the Yangtze and Yellow rivers [J].Earth-Science Reviews,2023,245:104567-104567.
[23] ZHENG S W,LUO H L,ZHANG J Y,et al.Sediment budget and riverbed deformation in the uppermost part of the lower Yangtze River,China [J].International Journal of Sediment Research,2022,37(4):484-492.
[24] 武旭同，李娜，王腊春.近60年来长江干流水沙特征分析[J].泥沙研究，2016(5):40-46.
[25] 张雨宁，郭磊城，于海升，等.大坝影响下长江干流悬沙粒度变化特征[J].泥沙研究，2022,47(1):51-58.
基本信息:
DOI：10.16239/j.cnki.0468-155x.2025.01.004
中图分类号:P333
引用信息:
[1]叶新,郭磊城,陈嘉民等.长江中下游干流含沙量变化特征[J].泥沙研究,2025,50(01):23-30.DOI:10.16239/j.cnki.0468-155x.2025.01.004.
基金信息:
国家自然科学基金长江水科学研究联合基金项目(U2040216); 上海市科委重点基金项目(22dz1202701)