基于水体淹没频率的三峡水库水量时序变化遥感估算研究  

Remote sensing estimation of water volume changes in the Three Gorges Reservoir based on water frequency

作　　者：梁丹萍 厉芳婷 梁思 赵红梅[3] 李文凯[1] 田礼乔[1] LIANG Danping;LI Fangting;LIANG Si;ZHAO Hongmei;LI Wenkai;TIAN Liqiao(State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan 430079,China;Hubei Institute of Photogrammetry and Remote Sensing,Wuhan,430074,China;Key Laboratory of Wetland and Watershed Research,Ministry of Education/School of Geography and Environment,Jiangxi Normal University,Nanchang,330022,China)

机构地区：[1]武汉大学测绘遥感信息工程全国重点实验室,武汉430079 [2]湖北省航测遥感院,武汉430074 [3]江西师范大学鄱阳湖湿地与流域研究教育部重点实验室/地理与环境学院,南昌330022

出　　处：《华中师范大学学报(自然科学版)》2025年第2期259-267,共9页Journal of Central China Normal University:Natural Sciences

基　　金：国家重点研发计划项目(2023YFB3905300,2023YFB3905304);国家自然科学基金项目(42371336,42071325,42176183);湖北省重点研发项目(2021BCA220);鄱阳湖湿地与流域研究教育部重点实验室江西师范大学开放基金资助项目(PK2021006);测绘遥感信息工程国家重点实验室专项科研经费项目;武汉大学“985计划”;国家重点实验室装备专项基金项目。

摘　　要：水库面积、水位与蓄水量变化监测对于水资源管理具有重要意义.该文以三峡水库为研究区域,结合全球地表水数据集和Landsat 5、7、8系列影像,基于Google Earth Engine云平台,分析了三峡水库1990—2022年的年均面积变化特征,建立了三峡水库蓄水前、蓄水阶段及全面运行后的水体频率-面积、水体频率-相对水位差的相关关系及面积-相对水位差的模型,由此得到了三峡水库逐年的相对水位差和蓄水量变化以及三峡水库全面运行后的年内高低水位的面积和水位差变化.结果表明:1)三峡水库在蓄水前、蓄水阶段及全面运行后的面积-相对水位差模型具有较高的决定系数,与实测数据相比,R^(2)为0.80,具有较好的一致性,能够表现水位差变化趋势;2)三峡水库在蓄水前、蓄水阶段到全面运行后的面积、相对水位差以及总蓄水量呈现明显增加;3)三峡水库在全面运行后年均面积相比蓄水前增加了130.52km^(2),平均相对水位差增加了3.77m,蓄水量增加了675.96×10^(6)m^(3).Monitoring changes in reservoir area,water level,and storage capacity is of great significance for water resource management.This study focuses on the Three Gorges Reservoir,utilizing the JRC Global Surface Water(GSW)datasets and Landsat series images(Landsat 5,7,and 8)through the Google Earth Engine cloud platform to calculate the annual average area change of the reservoir from 1990 to 2022.The correlation between water frequency area and water frequency relative water level difference before,during,and after the construction of the Three Gorges Reservoir was established,and the area relative water level difference was modeled.From this analysis,the relative water level difference and storage capacity changes of the Three Gorges Reservoir year by year,as well as area and water level difference changes at high and low water levels after the construction of the Three Gorges Reservoir,were obtained.The results showed that:The area-relative water level difference model of the Three Gorges Reservoir had a high coefficient of determination before,during,and after full operation.Compared with the measured data,the R^(2)was 0.80,which had good consistency and can reflect the trend of water level difference changes;2)The area,relative water level difference,and total water storage capacity of the Three Gorges Reservoir showed a significant increase before and during the water storage stage until full operation;3)After full operation,the annual average area of the Three Gorges Reservoir increased by 130.52 km^(2)compared to before storage,the average relative water level difference increased by 3.77 m,and the storage capacity increased by 675.96×10^(6)m^(3).

关 键 词：水体频率 水体面积 相对水位差 蓄水量 三峡水库 

分 类 号：P237[天文地球—摄影测量与遥感] TP79[天文地球—测绘科学与技术]