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Article

Ammonium Nitrogen Streamflow Transport Modelling and Spatial Analysis in Two Chinese Basins

1
College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
2
Ecological Environment Monitoring and Scientific Research Center of Haihe River Basin and Beihai Sea Area, Ministry of Ecological Environment, Tianjin 300061, China
3
Shenzhen Qianming Technology Co., Ltd., Shenzhen 518000, China
4
Synthego Corporation, Redwood City, CA 94063, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Karl-Erich Lindenschmidt
Water 2022, 14(2), 209; https://doi.org/10.3390/w14020209
Received: 20 November 2021 / Revised: 21 December 2021 / Accepted: 7 January 2022 / Published: 11 January 2022
(This article belongs to the Special Issue Surface Water Quality Modelling)
Ammonium nitrogen (NH4+-N), which naturally arises from the decomposition of organic substances through ammonification, has a tremendous influence on local water quality. Therefore, it is vital for water quality protection to assess the amount, sources, and streamflow transport of NH4+-N. SPAtially Referenced Regressions on Watershed attributes (SPARROW), which is a hybrid empirical and mechanistic modeling technique based on a regression approach, can be used to conduct studies of different spatial scales on nutrient streamflow transport. In this paper, the load and delivery of NH4+-N in Poyang Lake Basin (PLB) and Haihe River Basin (HRB) were estimated using SPARROW. In PLB, NH4+-N load streamflow transport originating from point sources and farmland accounted for 41.83% and 32.84%, respectively. In HRB, NH4+-N load streamflow transport originating from residential land and farmland accounted for 40.16% and 36.75%, respectively. Hence, the following measures should be taken: In PLB, it is important to enhance the management of the point sources, such as municipal and industrial wastewater. In HRB, feasible measures include controlling the domestic pollution and reducing the usage of chemical fertilizers. In addition, increasing the vegetation coverage of both basins may be beneficial to their nutrient management. The SPARROW models built for PLB and HRB can serve as references for future uses for different basins with various conditions, extending this model’s scope and adaptability. View Full-Text
Keywords: Poyang Lake Basin; Haihe River Basin; SPARROW; ammonium nitrogen; nutrient transport Poyang Lake Basin; Haihe River Basin; SPARROW; ammonium nitrogen; nutrient transport
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MDPI and ACS Style

Yin, J.; Chen, H.; Wang, Y.; Guo, L.; Li, G.; Wang, P. Ammonium Nitrogen Streamflow Transport Modelling and Spatial Analysis in Two Chinese Basins. Water 2022, 14, 209. https://doi.org/10.3390/w14020209

AMA Style

Yin J, Chen H, Wang Y, Guo L, Li G, Wang P. Ammonium Nitrogen Streamflow Transport Modelling and Spatial Analysis in Two Chinese Basins. Water. 2022; 14(2):209. https://doi.org/10.3390/w14020209

Chicago/Turabian Style

Yin, Jingchen, Haitao Chen, Yuqiu Wang, Lifeng Guo, Guoguang Li, and Puzhou Wang. 2022. "Ammonium Nitrogen Streamflow Transport Modelling and Spatial Analysis in Two Chinese Basins" Water 14, no. 2: 209. https://doi.org/10.3390/w14020209

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