An integrated system dynamics model developed for managing lake water quality at the watershed scale

Journal of Environmental Management
Hui LiuHuaicheng Guo

Abstract

A reliable system simulation to relate socioeconomic development with water environment and to comprehensively represent a watershed's dynamic features is important. In this study, after identifying lake watershed system processes, we developed a system dynamics modeling framework for managing lake water quality at the watershed scale. Two reinforcing loops (Development and Investment Promotion) and three balancing loops (Pollution, Resource Consumption, and Pollution Control) were constituted. Based on this work, we constructed Stock and Flow Diagrams that embedded a pollutant load model and a lake water quality model into a socioeconomic system dynamics model. The Dianchi Lake in Yunnan Province, China, which is the sixth largest and among the most severely polluted freshwater lakes in China, was employed as a case study to demonstrate the applicability of the model. Water quality parameters considered in the model included chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP). The business-as-usual (BAU) scenario and three alternative management scenarios on spatial adjustment of industries and population (S1), wastewater treatment capacity construction (S2), and structural adjustment of agriculture (S...Continue Reading

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Citations

Feb 9, 2018·International Journal of Environmental Research and Public Health·Ya-Tsune SieShiau-Yun Lu
Jul 17, 2020·Environmental Science and Pollution Research International·Yu ZhangDi Li
Apr 11, 2019·Environmental Science and Pollution Research International·Jiayu PengBinghui Zheng
Jun 13, 2021·Journal of Environmental Management·Eirini Aivazidou, Naoum Tsolakis

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