湖泊科学2025，Vol.37Issue(6)：2260-2272,13.DOI:10.18307/2025.0645
卫星遥感揭示江淮流域湖泊围网大幅拆除
Satellite remote sensing reveals substantial decrease of enclosure aquaculture in the Yangtze-Huaihe River Basin
摘要
Abstract
Enclosure aquaculture in lakes is one of the primary types of inland freshwater aquaculture,making significant contribu-tions to food security,employment,and economic growth.However,with the rapid escalation in enclosure aquaculture intensity,there is an observed disruption to the ecological balance of lakes on a gradual basis.It is imperative to develop a profound under-standing of the spatiotemporal dynamics of enclosure aquaculture in order to facilitate the preservation and restoration of lake ecosys-tems.In comparison with field surveys,satellite remote sensing offers a number of advantages,including large-scale coverage,traceability,and cost-effectiveness,thus rendering it the optimal choice for the monitoring of lake enclosure aquaculture.The pres-ent study developed an automatic algorithm for monitoring enclosure aquaculture based on Sentinel-1 SAR data and the U-Net mod-el.The efficacy of the proposed algorithm was assessed through a rigorous evaluation process involving the utilization of validation data from ten representative enclosure aquaculture lakes.The evaluation yielded a remarkable extraction accuracy exceeding 80％across all instances,thereby substantiating the algorithm's effectiveness.Moreover,the validation results based on long-term ran-dom sampling points demonstrated an overall classification accuracy that exceeded 95％.In addition,the algorithm was employed for the monitoring of enclosure aquaculture lakes in the Yangtze-Huaihe River Basin,thereby providing insights into the spatiotem-poral evolution of enclosure aquaculture from 2016 to 2023.The results indicated that a total of 48 lakes(larger than 10 km2)in the Yangtze-Huaihe River Basin were engaged in aquaculture activities.From 2016 to 2023,the area of enclosure aquaculture in these lakes underwent a substantial decrease,with the total area diminishing from 2118.72 km2 to 462.94 km2.Of the lakes under consideration,34(approximately 71％)had successfully removed their enclosure nets.The findings of the present study offer cru-cial support for the evaluation of the dynamics of lake water environments and the transformation of aquatic ecosystems both before and after enclosure and the removal of enclosure aquaculture.Moreover,they provide a scientific underpinning for the formulation of measures aimed at the restoration of lake ecosystems,environmental protection,and sustainable development.关键词
江淮流域/湖泊围网养殖/Sentinel-1/深度学习/合成孔径雷达(SAR)Key words
Yangtze-Huaihe River Basin/enclosure aquaculture in lakes/Sentinel-1/deep learning/synthetic aperture radar(SAR)引用本文复制引用
黄林生,徐亚田,罗菊花,翟金龙,孙喆,徐颖,高健,辛逸豪,秦海涛,赵晋陵,阮超..卫星遥感揭示江淮流域湖泊围网大幅拆除[J].湖泊科学,2025,37(6):2260-2272,13.基金项目
国家自然科学基金面上项目(4257012863)和河湖健康智慧感知与生态修复教育部重点实验室开放基金项目(HGKFZ09)联合资助. （4257012863）
