自然资源遥感2025，Vol.37Issue(2)：228-234,7.DOI:10.6046/zrzyyg.2023298
基于多源遥感的洞庭湖洲滩时空演变研究
Exploring the spatiotemporal evolution of bottomland in Dongting Lake based on multisource remote sensing
摘要
Abstract
To explore the spatiotemporal evolution of the bottomland in Dongting Lake since the middle stage of the Republic of China,this study examined the historical topographic maps and aerospace remote sensing data concerning the study area for over 10 time periods since the 1930s.Based on remote sensing image interpretation,statistical data analysis,and historical comparison,this study analyzed the temporal variations in the bottomland area of Dongting Lake in various periods to infer the corresponding spatial distributions of the bottomland.The results show that the spatial development of the bottomland in Dongting Lake was primarily characterized by the rapidly advancing delta at the mouth of the east branch of the Ouchi River and Piaowei Islet in East Dongting Lake,the alluvial deposits along the Caowei and Songzhu rivers in the north of South Dongting Lake,and the"Jiangnan Grassland"landscape formed by the bottom uplift of Qili and Muping lakes.The bottomland area in Dongting Lake expanded from 1 622.17 km2 in 1 938 to 1 962.28 km2 in 2018,coupled with the 980.96 km2 of reclaimed high bottomland,suggesting a net increase of1 321.07 km2.In terms of spatial distribution,the bottomland area exhibited an undulating trend rather than a continuous increase.It manifested a significant expansion from 1938 to 1948 and 1958 to 1998 but a slow shrinkage from 1948 to 1958 and 1998 to 2018.Overall,the results of this study provide objective data for preserving lakeshore ecosystems and biodiversity and serving ecological restoration and environmental conservation in the Yangtze River basin.关键词
洞庭湖区/洲滩演变/时序变化/多源遥感技术Key words
Dongting Lake area/bottomland evolution/temporal variation/multisource remote sensing technology分类
天文与地球科学引用本文复制引用
余姝辰,邱罗,贺秋华,金小燕,李嘉宝,余德清..基于多源遥感的洞庭湖洲滩时空演变研究[J].自然资源遥感,2025,37(2):228-234,7.基金项目
湖南省自科基金项目"近百年来洞庭湖洲滩湿地时空演替及其与水文环境耦合机理研究"(编号:2024JJ8320)、湖南省自然资源科技计划项目"洞庭湖区水生态安全及解决方案研究"(编号:湘自资科20230151ST)、"'洞庭湖区山水林田湖草沙一体化保护修复工程'监测评估关键技术研究"(编号:湘自资科20230142ST)和湖南省科技创新平台与人才计划项目"洞庭湖区生态环境遥感监测湖南省重点实验室"(编号:2019TP1012)共同资助. （编号:2024JJ8320）
