Assessment and management of lake eutrophication: A case study in Lake Erhai, China

Song-Shun Lin; Shui-Long Shen; Annan Zhou; Hai-Min Lyu

doi:10.1016/j.scitotenv.2020.141618

Assessment and management of lake eutrophication: A case study in Lake Erhai, China

Sci Total Environ. 2021 Jan 10:751:141618. doi: 10.1016/j.scitotenv.2020.141618. Epub 2020 Aug 16.

Authors

Song-Shun Lin¹, Shui-Long Shen², Annan Zhou³, Hai-Min Lyu⁴

Affiliations

¹ Department of Civil Engineering, School of Naval Architecture, Ocean, and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
² College of Engineering, Shantou University and Key Laboratory of Intelligent Manufacturing Technology, Ministry of Education, Shantou, Guangdong 515063, China; Discipline of Civil and Infrastructure, School of Engineering, Royal Melbourne Institute of Technology (RMIT), Victoria 3001, Australia; Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: shensl@stu.edu.cn.
³ Discipline of Civil and Infrastructure, School of Engineering, Royal Melbourne Institute of Technology (RMIT), Victoria 3001, Australia.
⁴ State Key Laboratory of Internet of Things for Smart City, University of Macau, Macau.

PMID: 33167190
DOI: 10.1016/j.scitotenv.2020.141618

Abstract

Some wastewater sources, such as agricultural waste and runoff, and industrial sewage, can degrade water quality. This study summarises the sources and corresponding mechanisms that trigger eutrophication in lakes. Additionally, the trophic status index and water quality index (WQI) which are effective tools for evaluating the degree of eutrophication of lakes, have been discussed. This study also explores the main nutrients (nitrogen and phosphorus) driving transformations in the water body and sediment. Lake Erhai was used as a case study, and it was found to be in a mesotrophic state, with N and P co-limitation before 2006, and only P limitation since 2006. Finally, effective measures to maintain sustainable development in the watershed are proposed, along with a framework for an early warning system adopting the latest technologies (geographic information systems (GIS), remote sensing (RS)) for preventing eutrophication.

Keywords: Comprehensive management; Eutrophication; Lake Erhai; Nutrient transformation; Sustainable development.

Publication types

Review

MeSH terms

China
Environmental Monitoring
Eutrophication*
Lakes*
Nitrogen / analysis
Phosphorus / analysis
Water Quality

Substances

Phosphorus
Nitrogen