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Article

Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China

by 1,2,†, 1,2,†, 1,2,*, 1,2, 1,2 and 1,2
1
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China
2
China Institute of Water Resources and Hydropower Research, Beijing 100038, China
*
Author to whom correspondence should be addressed.
Yang Ding and Fei Dong contributed equally to this work.
Int. J. Environ. Res. Public Health 2020, 17(3), 868; https://doi.org/10.3390/ijerph17030868
Received: 3 January 2020 / Revised: 22 January 2020 / Accepted: 24 January 2020 / Published: 30 January 2020
(This article belongs to the Section Environmental Remediation and Management)
Non-point source (NPS) pollution simulation in control units can identify critical pollution source areas and make Best Management Practices (BMPs) more effective for the responsible parties. In this study, the control unit division method is introduced, and the spatial and temporal distribution characteristics of NPS pollution in the Guishui River Basin of Northern China are analyzed using the Soil Water Assessment Tool (SWAT) model. In addition, five BMP scenarios were designed for environmental and cost-benefit analyses. The results show that the loss of total nitrogen (TN) and total phosphorus (TP) is concentrated in the rainy season, and the loss of TN and TP is mainly distributed in the middle and lower reaches of the main stream of the Guishui River. This area accounts for 22.34% of the basin area. The vegetated filter strips (VFS) scenario had the best environmental benefits with average TN and TP reduction efficiencies of 63.4% and 62.6%, respectively. The Grassed Waterway was the most cost-effective scenario measure, cost-benefit (CE) values of TN and TP were 1798.13 g/€ and 601.56 g/€. Generally, research on NPS pollution using control units can more clearly identify the critical source areas of pollution than other methods, and provides technical support for watershed management decision makers. View Full-Text
Keywords: control unit; non-point source pollution; SWAT; Best Management Practice control unit; non-point source pollution; SWAT; Best Management Practice
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MDPI and ACS Style

Ding, Y.; Dong, F.; Zhao, J.; Peng, W.; Chen, Q.; Ma, B. Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China. Int. J. Environ. Res. Public Health 2020, 17, 868. https://doi.org/10.3390/ijerph17030868

AMA Style

Ding Y, Dong F, Zhao J, Peng W, Chen Q, Ma B. Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China. International Journal of Environmental Research and Public Health. 2020; 17(3):868. https://doi.org/10.3390/ijerph17030868

Chicago/Turabian Style

Ding, Yang, Fei Dong, Jinyong Zhao, Wenqi Peng, Quchang Chen, and Bing Ma. 2020. "Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China" International Journal of Environmental Research and Public Health 17, no. 3: 868. https://doi.org/10.3390/ijerph17030868

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