Timely monitoring, detection and quantification of cyanobacterial blooms are especially important for controlling public health risks and understanding aquatic ecosystem dynamics. Due to the advantages of simultaneous data acquisition over large geographical areas and high temporal coverage, remote sensing strongly facilitates cyanobacterial bloom monitoring in inland waters. We provide a comprehensive review regarding cyanobacterial bloom remote sensing in inland waters including cyanobacterial optical characteristics, operational remote sensing algorithms of chlorophyll, phycocyanin and cyanobacterial bloom areas, and satellite imaging applications. We conclude that there have many significant progresses in the remote sensing algorithm of cyanobacterial pigments over the past 30 years. The band ratio algorithms in the red and near-infrared (NIR) spectral regions have great potential for the remote estimation of chlorophyll a in eutrophic and hypereutrophic inland waters, and the floating algae index (FAI) is the most widely used spectral index for detecting dense cyanobacterial blooms. Landsat, MODIS (Moderate Resolution Imaging Spectroradiometer) and MERIS (MEdium Resolution Imaging Spectrometer) are the most widely used products for monitoring the spatial and temporal dynamics of cyanobacteria in inland waters due to the appropriate temporal, spatial and spectral resolutions. Future work should primarily focus on the development of universal algorithms, remote retrievals of cyanobacterial blooms in oligotrophic waters, and the algorithm applicability to mapping phycocyanin at a large spatial-temporal scale. The applications of satellite images will greatly improve our understanding of the driving mechanism of cyanobacterial blooms by combining numerical and ecosystem dynamics models.Copyright © 2019 Science China Press. Published by Elsevier B.V. All rights reserved.

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以太湖流域为例,通过文献整理、现场调研、座谈交流等方式,梳理太湖流域生态环境现状和管理情况,总结太湖流域联合管理保护经验,分析太湖流域联合管理保护方面存在的不足。在此基础上,从推进流域整体管理保护立法、出台跨界河湖联防联控指导意见、统一规划、统一标准、加强河湖保护和治理协同作业、以水定产、绿色发展等方面,提出加强太湖流域联合管理保护的对策建议,以期能对提升太湖流域跨界综合管理与河湖长制推行水平有所帮助。

By means of literature review, field investigation, discussion and communication, we made a review on the eco-environment status and management situation of Taihu Lake Basin and summarized the experiences and deficiencies in the joint management and protection of the Taihu Lake Basin. On this basis, we put forward some policy measures to strengthen the joint management and protection in the following aspects: promoting the legislation of basin management, issuing guidance on joint management and protection, unifying plans and standards, strengthening cooperative work, adapting to the carrying capacity of water resources, green development, etc. We hope it will be helpful to improve the integrated management of boundary-sharing basin and the implementation of river and lake chief system for Taihu Lake Basin.