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Contrasting Eutrophication Risks and Countermeasures in Different Water Bodies: Assessments to Support Targeted Watershed Management

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      Abstract

      Eutrophication is a major problem in China. To combat this issue, the country needs to establish water quality targets, monitoring systems, and intelligent watershed management. This study explores a new watershed management method. Water quality is first assessed using a single factor index method. Then, changes in total nitrogen/total phosphorus (TN/TP) are analyzed to determine the limiting factor. Next, the study compares the eutrophication status of two water function districts, using a comprehensive nutritional state index method and geographic information system (GIS) visualization. Finally, nutrient sources are qualitatively analyzed. Two functional water areas in Tianjin, China were selected and analyzed: Qilihai National Wetland Nature Reserve and Yuqiao Reservoir. The reservoir is a drinking water source. Results indicate that total nitrogen (TN) and total phosphorus (TP) pollution are the main factors driving eutrophication in the Qilihai Wetland and Yuqiao Reservoir. Phosphorus was the limiting factor in the Yuqiao Reservoir; nitrogen was the limiting factor in the Qilihai Wetland. Pollution in Qilihai Wetland is more serious than in Yuqiao Reservoir. The study found that external sources are the main source of pollution. These two functional water areas are vital for Tianjin; as such, the study proposes targeted management measures.

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            Author and article information

            Affiliations
            College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; love777_happy@ 123456126.com (T.L.); zhangyn2011@ 123456whu.edu.cn (Y.Z.); jumeit@ 123456nankai.edu.cn (M.J.); yqwang@ 123456nankai.edu.cn (Y.W.)
            Author notes
            [* ]Correspondence: chucl@ 123456nankai.edu.cn ; Tel.: +86-138-2138-5387; Fax: +86-222-350-6446
            Contributors
            Role: Academic Editor
            Journal
            Int J Environ Res Public Health
            Int J Environ Res Public Health
            ijerph
            International Journal of Environmental Research and Public Health
            MDPI
            1661-7827
            1660-4601
            29 June 2017
            July 2017
            : 14
            : 7
            28661417
            5551133
            10.3390/ijerph14070695
            ijerph-14-00695
            (Academic Editor)
            © 2017 by the authors.

            Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

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