首页|基于多源遥感数据的洞庭湖流域时空演变研究

基于多源遥感数据的洞庭湖流域时空演变研究

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  • 万方数据
  • 维普
近年来,洞庭湖流域的生态环境面临巨大的压力,主要原因包括自然灾害和人类不合理的开发利用.正确获取流域时空演变趋势对于保护和建设洞庭湖流域的生态环境至关重要.文章基于2017-2021年遥感数据,采用NDWI水体指数阈值法(标准化差异水体指数),分析了洞庭湖在此期间的湖泊流域面积变化趋势,研究了流域重心的迁移趋势,探讨了流域关键问题和脆弱环节.结果表明,大通湖在2017年至2021年3月下旬期间水域变化不大,保持在稳定状态.通江湖泊水域面积变化相对比较大,尤其2019年相比2018年呈断崖式萎缩,由2018年的863 km2萎缩到2019年的648.02 km2,减幅214.98 km2.影响湖泊演变的气象因素中,降雨与气温相关性最高.该研究成果可为洞庭湖流域可持续发展的治理措施的制定和科学规划提供重要参考依据.
Spatio-temporal Evolution of Dongting Lake Basin Based on Multi-source Remote Sensing Data
In recent years,the ecological environment in the Dongting lake basin has faced enormous pressure,mainly due to natural disasters and unreasonable human development and utilization.Accurately obtaining the spatiotemporal evolution trend of the watershed is crucial for protecting and constructing the ecological environment of the Dongting lake basin.This article is based on remote sensing data from 2017 to 2021,using the NDWI water index threshold method(standardized differential water index)to analyze the trend of changes in the lake basin area of Dongting lake during this period,and study the migration trend of the basin center of gravity,exploring key issues and vulnerable links in the basin.The results indicate that the water area of Datong lake did not change significantly from 2017 to late March 2021 and remained stable.The water area of Tongjiang lake has undergone significant changes,especially in 2019 when it experienced a cliff like shrinkage compared to 2018,with a decrease of 214.98 km2 from 863 km2 in 2018 to 648.02 km2 in 2019.Among the meteorological factors that affect the evolution of lakes,rainfall has the highest correlation with temperature.The results of this study can provide important reference for the formulation and scientific planning of governance measures for sustainable development in the Dongting lake basin.

remote sensing dataDongting lake basinNDWIspace-time evolutioncenter of gravity migration

傅铭哲、郑渊茂、钱长照、贺秋华、余姝辰

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厦门理工学院环境科学与工程学院,福建厦门 361024

洞庭湖区生态环境遥感监测湖南省重点实验室,长沙 410004

福建省风灾害与风工程重点实验室,福建厦门 361024

遥感数据 洞庭湖流域 NDWI 时空演变 重心迁移

国家自然科学基金福建省自然科学基金面上项目洞庭湖区生态环境遥感监测湖南省重点实验室开放基金湖南省自然资源厅科技计划项目福建省产学研联合创新项目福厦泉国家自主创新示范区协同创新平台项目厦门理工学院高层次人才科研启动项目

521785102022J011229DTH Key Lab.20230220230142ST2021Y40052022-P-024YKJ22010R

2024

10.20091/j.cnki.1000-3177.2024.04.019

遥感信息
科学技术部国家遥感中心,中国测绘科学研究院

遥感信息

CSTPCD北大核心
影响因子：0.712
ISSN：1000-3177
年,卷(期)：2024.39(4)