Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model

Non-point source nitrogen and phosphorus pollution is a critical threat to aquatic ecosystems and a potential risk to drinking water safety. To precisely control nitrogen and phosphorus pollution in the river basin, in this study, we identified key pollution areas of the river basin, analyzed the ma...

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Autores principales:	Wu Li, Chen Zhe, Liu Hui-ying, Wang Dun-qiu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	agricultural and forested basins nitrogen and phosphorus pollution reduction swat Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/db420ad1a2714061a0f08873375e6360
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spelling	oai:doaj.org-article:db420ad1a2714061a0f08873375e63602021-11-06T07:12:04ZSimulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model1606-97491607-079810.2166/ws.2020.237https://doaj.org/article/db420ad1a2714061a0f08873375e63602021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/992https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Non-point source nitrogen and phosphorus pollution is a critical threat to aquatic ecosystems and a potential risk to drinking water safety. To precisely control nitrogen and phosphorus pollution in the river basin, in this study, we identified key pollution areas of the river basin, analyzed the main characteristics of pollution sources as well as their contribution to the river basin pollution, and conducted simulation analysis on reduction measures based on the SWAT model. The results showed the following. (1) The simulation effect of the calibrated model was good, and sub-basins 3, 39 and 96 were the key source areas, the main sources of pollution were combined pollution from livestock and poultry breeding and planting industry. (2) Crops had the largest input and output for both nitrogen and phosphorus, the output of which was 6,137.8 t/a and 562.4 t/a respectively. The urban point sources had the highest output rates of nitrogen and phosphorus, 75.7% and 67.5% respectively. (3) With the optimal combination of reduction measures, nitrogen and phosphorus were reduced by 1,438.9 t and 85.3 t respectively, i.e., the reduction rates were the highest. The reduction effect for total nitrogen was better than that for total phosphorus. HIGHLIGHTS Using local census data of pollution sources based on SWAT model.; Identifying the key pollution sources through the characteristics of main pollution source and output.; Using data of pollution sources examining contribution rate and output rate.; The reduction effects of different reduction measures were compared.; Using long-term hydrology, water quality data rate and validation, the result of model is reliable.;Wu LiChen ZheLiu Hui-yingWang Dun-qiuIWA Publishingarticleagricultural and forested basinsnitrogen and phosphorus pollutionreductionswatWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 992-1004 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	agricultural and forested basins nitrogen and phosphorus pollution reduction swat Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	agricultural and forested basins nitrogen and phosphorus pollution reduction swat Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Wu Li Chen Zhe Liu Hui-ying Wang Dun-qiu Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
description	Non-point source nitrogen and phosphorus pollution is a critical threat to aquatic ecosystems and a potential risk to drinking water safety. To precisely control nitrogen and phosphorus pollution in the river basin, in this study, we identified key pollution areas of the river basin, analyzed the main characteristics of pollution sources as well as their contribution to the river basin pollution, and conducted simulation analysis on reduction measures based on the SWAT model. The results showed the following. (1) The simulation effect of the calibrated model was good, and sub-basins 3, 39 and 96 were the key source areas, the main sources of pollution were combined pollution from livestock and poultry breeding and planting industry. (2) Crops had the largest input and output for both nitrogen and phosphorus, the output of which was 6,137.8 t/a and 562.4 t/a respectively. The urban point sources had the highest output rates of nitrogen and phosphorus, 75.7% and 67.5% respectively. (3) With the optimal combination of reduction measures, nitrogen and phosphorus were reduced by 1,438.9 t and 85.3 t respectively, i.e., the reduction rates were the highest. The reduction effect for total nitrogen was better than that for total phosphorus. HIGHLIGHTS Using local census data of pollution sources based on SWAT model.; Identifying the key pollution sources through the characteristics of main pollution source and output.; Using data of pollution sources examining contribution rate and output rate.; The reduction effects of different reduction measures were compared.; Using long-term hydrology, water quality data rate and validation, the result of model is reliable.;
format	article
author	Wu Li Chen Zhe Liu Hui-ying Wang Dun-qiu
author_facet	Wu Li Chen Zhe Liu Hui-ying Wang Dun-qiu
author_sort	Wu Li
title	Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
title_short	Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
title_full	Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
title_fullStr	Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
title_full_unstemmed	Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model
title_sort	simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on swat model
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/db420ad1a2714061a0f08873375e6360
work_keys_str_mv	AT wuli simulationofnitrogenandphosphoruspollutionintypicalagriculturalandforestedbasinsaswellasrelevantreductioneffectbasedonswatmodel AT chenzhe simulationofnitrogenandphosphoruspollutionintypicalagriculturalandforestedbasinsaswellasrelevantreductioneffectbasedonswatmodel AT liuhuiying simulationofnitrogenandphosphoruspollutionintypicalagriculturalandforestedbasinsaswellasrelevantreductioneffectbasedonswatmodel AT wangdunqiu simulationofnitrogenandphosphoruspollutionintypicalagriculturalandforestedbasinsaswellasrelevantreductioneffectbasedonswatmodel
_version_	1718443824678699008

Simulation of nitrogen and phosphorus pollution in typical agricultural and forested basins as well as relevant reduction effect based on SWAT model

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