生态环境学报2026，Vol.35Issue(5)：760-769,10.DOI:10.16258/j.cnki.1674-5906.2026.05.009
引江济淮工程驱动下江淮段植被动态响应分析
Vegetation Dynamics in Response to the Yangtze-to-Huaihe Water Diversion Project:An Analysis of the Jianghuai Section
摘要
Abstract
To evaluate and predict vegetation dynamics driven by the Yangtze-to-Huaihe Water Diversion Project,this study used Landsat data from 2015 to 2024.The analysis combines random forest classification,the Sen-MK trend test,and the Hurst index.The focus is on the spatial and temporal changes in vegetation cover and vegetation growth performance(VGP)before and after project construction,as well as on future trends.The results show that the project reused more than 30%of existing river channels,while occupying 24.72 km2 of cropland.The project also created 37.81 km2 of new water bodies and 12.87 km2 of supporting facilities.Vegetation cover types changed in 36.42%of the study area.Within these changed areas,vegetation conditions improved in 51.94%of the land,where the mean VGP increase was 1.616.However,vegetation degraded in 48.06%of the area,with a mean VGP decrease of 1.950 4.In areas with stable natural vegetation,250 impact units showed an increase in VGP,with a mean change of+0.11.For cropland,137 impact units experienced improved vegetation conditions,with a mean increase of+0.81.Additionally,132 cropland impact units showed a significantly higher VGP increase compared to the control areas,with a difference(ΔVGP)of 0.598 2.The Hurst analysis indicates that vegetation growth under the Yangtze-to-Huaihe Water Diversion Project is likely to maintain an overall positive trend.About 6.10%of the area exhibited a pattern of continuous improvement.These areas are mainly located along the northwest shore of Chaohu Lake,near the Tianhe River inlet to the Yangtze River,and along both sides of the Paihe River from Hefei to Shouxian.After accounting for urban expansion,areas with a future degradation trend make up 5.49%.The future trend in some parts of Sanhe Town near Chaohu Lake is unclear and requires further attention.In the short term,the construction of the Yangtze-to-Huaihe Water Diversion Project caused some local vegetation degradation.However,the project also led to long-term vegetation recovery,supported by improved hydrological conditions and ecological restoration efforts.Overall,the project has resulted in a net improvement in the quality of regional vegetation.关键词
引江济淮工程/土地覆盖变化/植被动态/趋势检验/Hurst指数Key words
Yangtze-to-Huaihe Water Diversion Project/land cover change/vegetation dynamics/trend test/Hurst index分类
农业科技引用本文复制引用
王亚琼,罗劲松,高曼莉,樊丙玉,王培晓..引江济淮工程驱动下江淮段植被动态响应分析[J].生态环境学报,2026,35(5):760-769,10.基金项目
国家自然科学基金项目(42401524) （42401524）
安徽省高校自然科学研究项目(2023AH052985) （2023AH052985）
安徽省质量工程项目(2024jyxm1198) （2024jyxm1198）
