(1.State Key Laboratory of Information Engineering in Surveying， Mapping and Remote Sensing， Wuhan 430079， China；2.Hubei Institute of Photogrammetry and Remote Sensing， Wuhan， 430074， China；3.Key Laboratory of Wetland and Watershed Research， Ministry of Education/School of Geography and Environment， Jiangxi Normal University， Nanchang， 330022， China)
Abstract：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 R2 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 km2 compared to before storage， the average relative water level difference increased by 3.77 m， and the storage capacity increased by 675.96 × 106 m3.
梁丹萍,厉芳婷,梁 思,赵红梅,李文凯,田礼乔. 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[J]. 华中师范大学学报(自然科学版), 2025, 59(2): 259-267.
LIANG Danping,LI Fangting,LIANG Si,ZHAO Hongmei,LI Wenkai,TIAN Liqiao . Remote sensing estimation of water volume changes in the Three Gorges Reservoir based on water frequency. journal1, 2025, 59(2): 259-267.
2025, Vol. 59 
