面源污染物输出系数模型的研究进展

Research advances of export coefficient model for non-point source pollution.

面源污染的量化研究对水质管理具有重要意义。经典的输出系数模型法以其结构简单、应用方便、输入数据容易获取等特点在农业面源污染研究中得到了广泛的应用和发展。本研究介绍了输出系数模型法的发展历程及其在农业面源污染负荷估算中的应用,概括了输出系数的获取途径及其在不同条件下的取值,并指出尺度效应问题、输出系数模型与水文模型的耦合将是输出系数模型今后的主要研究方向。

Quantitative study of non-point source pollution is of significance in effective management of water quality. Export coefficient method, owing to its relatively fewer data input requirement, simple structure, and easy application, was widely used in the study of agricultural nonpoint source pollution, and obtained greater development. This paper introduced the development process of export coefficient model and its application in estimating agricultural non-point source pollutant load, and generalized the acquirement approaches of pollutant export coefficients and their values under different conditions. The scale effect of export coefficient, the coupling of export coefficient mode with hydrological model were proposed as the main study areas of the export coefficient models in the future.