摘要
以湖北省典型湖库为研究对象,基于卫星遥感和地面实测数据,构建了适用于湖北省典型湖库的叶绿素a浓度反演模型,并在2023年2-10月开展了水华预警业务化应用示范。结果表明:(1)所构建叶绿素a浓度反演模型的精度较高,能有效预警湖北省湖库水华的发生。(2)湖北省大多数湖库在监测时段内的水体平均叶绿素a浓度未达到水华预警级别,但龙感湖、斧头湖以及丹江口库区支流部分水域有触发预警的情况,存在水华发生风险。(3)对部分典型水域进行的长时序监测分析显示,洪湖虽未发生明显水华,但是叶绿素a浓度相对较高,高值时段主要集中于冬末春初(2-3月)和夏季(8-9月);龙感湖存在较高的水华发生风险,水华高发期主要集中于8-9月,高发区域主要分布在湖区北部水域;斧头湖存在较高的水华发生风险,高发期主要集中于6-10月,高发区域主要分布在近岸水域。
Focusing on typical lakes and reservoirs in Hubei Province,This study established a chlorophyll-a concentration inversion model suitable for these water bodies utilizing satellite remote sensing and ground measurement data.The model was operationally applied for water bloom early warning from February to October 2023.The results indicated that:①The constructed chlorophyll-a inversion model exhibited high accuracy and effectively predicted the occurrence of water blooms in the lakes and reservoirs of Hubei Province.②Most water bodies maintained average chlorophyll-a concentrations below bloom-alert thresholds,though Longgan Lake,Futou Lake,and Danjiangkou tributaries triggered warnings,posing a risk of water bloom.③The long-term sequential monitoring and analysis of some typical water areas revealed that although no obvious water bloom occurred in Honghu Lake,the chlorophyll-a concentration was relatively high,with the high-value periods mainly concentrated in late winter and early spring(February and March)and summer(August and September).Longgan Lake faced high bloom risks primarily concentrated in August/September with spatial distribution mainly in the northern regions.Similarly,Futou Lake also presented pronounced bloom vulnerability between June and October,particularly evident around its perimeter.
作者
张媛
熊晶
汤敏喆
张煦
ZHANG Yuan;XIONG Jing;TANG Minzhe;ZHANG Xu(Ecological and Environmental Monitoring Center of Hubei Province,Wuhan 430060,China)
出处
《中国环境监测》
北大核心
2025年第4期267-278,共12页
Environmental Monitoring in China
基金
湖北省生态环境厅环保科研项目(2021HB-ZC06)
国防科工局高分辨率对地观测系统重大专项政府综合治理应用与规模化产业化示范项目(81-Y50G20-9001-22/23)。
关键词
遥感反演
典型湖库
叶绿素A
水华
remote sensing inversion
typical lakes and reservoirs
chlorophyll-a
water bloom
作者简介
第一作者:张媛(1988-),女,湖北孝感人,硕士,工程师。
