کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1055593 1485257 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An integrated system dynamics model developed for managing lake water quality at the watershed scale
ترجمه فارسی عنوان
یک مدل دینامیکی سیستم یکپارچه برای مدیریت کیفیت آب دریاچه در مقیاس حوزه آبریز توسعه یافته است
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• A system dynamics modeling framework for managing lake water quality is presented.
• Five coupled feedback loops of system processes at watershed scale are developed.
• The model simulates interactions between socio-economic development and water quality.
• Sensitivity analysis results can help identify critical factors on system behavior.
• Case results can provide support for decision-making in watershed management.

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 (S3), were simulated to assess the effectiveness of certain policies in improving water quality. Results showed that S2 is most effective scenario, and the COD, TN, and TP concentrations in Caohai in 2030 are 52.5, 10.9, and 0.8 mg/L, while those in Waihai are 9.6, 1.2, and 0.08 mg/L, with sustained development in the watershed. Thus, the model can help support the decision making required in development and environmental protection strategies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 155, 15 May 2015, Pages 11–23
نویسندگان
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