GF-1与ICESat-2数据监测鄱阳湖水量变化

doi:10.13474/j.cnki.11-2246.2025.0211

测绘通报 ›› 2025, Vol. 0 ›› Issue (2): 58-63.doi: 10.13474/j.cnki.11-2246.2025.0211

GF-1与ICESat-2数据监测鄱阳湖水量变化

林佳余^1,2, 刘振波^1,2, 童旭东^1,2, 张丽娟¹, 殷凌锋¹, 郑超¹

1. 南京信息工程大学遥感与测绘工程学院, 江苏南京 210044;
2. 自然资源部遥感导航一体化应用工程技术创新中心, 江苏南京 210044

收稿日期:2024-07-08 发布日期:2025-03-03
通讯作者: 童旭东。E-mail:003445@nuist.edu.cn
作者简介:林佳余(1999—),女,硕士生,主要研究方向为湖泊水量监测。E-mail:lin13584909＿01@163.com
基金资助:
高分辨率对地观测系统重大专项(30-Y60B01-9003-22/23)

Monitoring water volume changes in Poyang Lake using GF-1 and ICESat-2 data

LIN Jiayu^1,2, LIU Zhenbo^1,2, TONG Xudong^1,2, ZHANG Lijuan¹, YIN Lingfeng¹, ZHENG Chao¹

1. Nanjing University of Information Science & Technology, School of Remote Sensing & Geomatics Engineering, Nanjing 210044, China;
2. Technology Innovation Center for Integrated Applications in Remote Sensing and Navigation, Ministry of Natural Resources, Nanjing 210044, China

Received:2024-07-08 Published:2025-03-03

摘要/Abstract

摘要： 本文以鄱阳湖为研究区,基于高分一号(GF-1)和ICEsat-2卫星测高数据,在湖泊水域面积提取基础上,结合ICEsat-2测高数据构建湖泊水位与面积的关系模型,估算鄱阳湖2020—2023年间水量变化,并分析研究区水量时间变化及主要影响因素。研究结果表明,鄱阳湖年内水域面积—水位—水量变化较大,呈现明显的季节性特征,即夏季湖泊蓄水量最大,冬季湖泊蓄水量最小。以2020年为例,8月鄱阳湖水量变化量最高达到15.6 km³,1月比3月水量减少了1.44 km³,年内相差最大值为17.04 km³;近3年鄱阳湖水量呈递减趋势,2020年3月到2023年3月鄱阳湖水量减少了1.43 km³;通过对鄱阳湖水量变化与区域降水量、温度相关性分析得出,影响鄱阳湖水量变化主要气象因子为降水量,两者的复相关系数R²达0.78。

关键词: 高分一号, 湖泊水量, 卫星测高数据, 鄱阳湖, 水面高程

Abstract: Poyang Lake as the study area and utilizes satellite altimetry data from GF-1 and ICESat-2. Based on the extraction of lake water surface area, a relationship model between lake water level and area is constructed using ICESat-2 altimetry data to estimate water volume changes in Poyang Lake from 2020 to 2023. It further analyzes the temporal variations in water volume and the primary influencing factors within the study area. The research results indicate that Poyang Lake experiences significant seasonal variations in water surface area, water level, and water volume, with the highest water storage in summer and the lowest in winter. Taking 2020 as an example, the maximum water volume change in Poyang Lake reached 15.6 km³ in August, while it decreased by 1.44 km³ from January to March of the same year, resulting in a maximum intra-annual difference of 17.04 km³. Over the past three years, Poyang Lake's water volume has shown a decreasing trend, with a decrease of 1.43 km³ from March 2020 to March 2023. Correlation analysis between water volume changes in Poyang Lake and regional precipitation and temperature reveals that precipitation is the primary meteorological factor influencing water volume changes in Poyang Lake, with a coefficient of determination (R²) of 0.78 between the two.

Key words: GF-1, water volume of lakes, satellite altimetry data, Poyang Lake, water surface elevation

中图分类号:

P237

林佳余, 刘振波, 童旭东, 张丽娟, 殷凌锋, 郑超. GF-1与ICESat-2数据监测鄱阳湖水量变化[J]. 测绘通报, 2025, 0(2): 58-63.

LIN Jiayu, LIU Zhenbo, TONG Xudong, ZHANG Lijuan, YIN Lingfeng, ZHENG Chao. Monitoring water volume changes in Poyang Lake using GF-1 and ICESat-2 data[J]. Bulletin of Surveying and Mapping, 2025, 0(2): 58-63.

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GF-1与ICESat-2数据监测鄱阳湖水量变化

Monitoring water volume changes in Poyang Lake using GF-1 and ICESat-2 data

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