The Calculation of Agricultural Non-Point Source Pollution Load in High Standard Farmland Construction Area

Abstract

This paper utilized field monitoring, model simulation, and theoretical analysis methods to study the agricultural non-point source pollution monitoring and load quantification under the construction of high-standard farmland, focusing on the demonstration project (Fengxiang area) implemented by the group. The calculated nitrogen and phosphorus loss coefficients for the high-standard farmland in the Fengxiang area were lower. The construction of high-standard farmland effectively controlled the loss of nutrients such as nitrogen and phosphorus. The agricultural non-point source pollution load for the Fengxiang area during a normal water year was determined to be 422.688 t (TN) and 447.576 t (TP). The research results can significantly reduce the cost of water pollution control caused by agricultural non-point source pollution, enhance the utilization of land resources, greatly mitigate the direct and indirect economic losses due to agricultural non-point source pollution, and provide valuable insights for sustainable agricultural development and ecological environment protection.