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中文摘要：
基于GIS技术和改进后的输出系数法,将坡面面源产污过程与污染物迁移转化过程相耦合,提出基于追迹计算的汇流单元面源负荷贡献率评价方法.此方法可客观识别各汇流单元对河道水体污染的贡献,进而有效克服水质资料缺失的不足,并在滦河流域进行实证研究,研究结果可为流域污染治理提供参考.
英文摘要：
Based on GIS and the improved export coefficient method, the slope surface non-point source pollution producing process is coupled with that of the pollutants migration and transformation, and then a tracing calculation based method for evalu- ation on contribution rate of the watershed non-point source pollution load into river is put forward herein. This method can objec- tively identify the contributions from all the catchment areas to the pollution of fiver body and, moreover, overcome the deficien- cy of the shortage of the data of water quality ; with which a study on the actual case of Luanhe River Basin is made and the result can provide reference for the pollution control of river basin as well.
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