Impact of Agricultural Non-Point Source Pollution on River Water Quality and Integrated Mitigation Strategies
Abstract
ecological security. Excessive input of fertilizers and pesticides, improper irrigation, and livestock waste discharge cause nitrogen, phosphorus, and organic matter to enter rivers through rainfall and surface runoff, leading to eutrophication, water degradation, and loss of biodiversity. This paper analyzes the sources and transport mechanisms of agricultural NPS pollution and its impacts on river water quality. Based on
case studies from typical river basins, the spatialtemporal characteristics of pollution are summarized. Furthermore, integrated mitigation
strategies are proposed from three aspects: source reduction, process control, and terminal treatment. The study concludes that combining
ecological engineering with management regulations is essential to reduce pollutant discharge and improve river water quality, promoting the
coordinated development of agricultural production and ecological conservation.
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DOI: http://dx.doi.org/10.70711/frim.v4i2.8782
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