乌海湖泥沙淤积演变的遥感分析  

Remote sensing study on the evolution of sediment deposition in the Wuhai Lake

作　　者：李泉志 胡振琪[1,2] 宋德云 李冲 LI Quan-zhi;HU Zhen-qi;SONG De-yun;LI Chong(Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology-Beijing,Bejing 100083,China;School of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China;China CAMC Engineering Co.Ltd.,Beijing 100080,China)

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083 [2]中国矿业大学环境与测绘学院,江苏徐州221116 [3]中工国际工程股份有限公司,北京100080

出　　处：《泥沙研究》2023年第4期67-74,共8页Journal of Sediment Research

基　　金：国家自然科学基金项目(41771542);北京市自然科学基金面上项目(4202065)。

摘　　要：乌海湖泥沙淤积日益严重,快速分析估算其泥沙淤积量,揭示泥沙淤积过程,对泥沙淤积治理具有参考价值。采用Landsat-8与Sentinel-2遥感数据,利用GEE云计算平台分析了2014-2021年乌海湖水体面积动态变化过程,建立了水体面积与泥沙淤积量和库容量的数值模型。分析结果表明,2014-2021年期间,乌海湖的月平均水体面积变化幅度较大,表现出明显的季节性变化规律。丰水期水体面积变化在小范围内浮动,而枯水期水体面积显著缩小。乌海湖的水体面积与泥沙淤积量显著负相关,泥沙淤积量随时间明显增加,库容量显著减少。Sediment deposition in the Wuhai Lake is more and more serious,and it is important to quickly analyze and estimate its deposition volume.The study Landsat-8 and Sentinel-2 remote sensing data were selected to analyze the dynamic changes of water body area of the Wuhai Lake from 2014 to 2021 by GEE cloud computing platform,and established the numerical empirical model of water body area and sediment deposition volume and reservoir capacity.The results show that the monthly average water body area of the Wuhai Lake varies widely during 2014-2021,and showing an obvious seasonal variation pattern.The water body area changes in the abundant water period show a floating in small range,while the water body area in the dry water period shows a significant decreasing trend.During the study period,the water body area of the Wuhai Lake and the sediment deposition volume show a significant negative correlation,and the sediment in the study period,the water body area of the Wuhai Lake showed a significant negative correlation with the sediment accumulation,the sediment accumulation increased significantly with time and the reservoir capacity decreased significantly.

关 键 词：乌海湖 泥沙淤积 水体提取 遥感分析 GEE 

分 类 号：TV145[水利工程—水力学及河流动力学]