流域总磷污染动态模拟模型与检验

分析了不同来源磷对目标水体水质的影响、流域中磷的产生途径（包括点源和面源）及其在河流、土壤中的迁移转化规律．基于不确定因素影响的分解建模方法，建立起总磷污染控制动态模拟模型，讨论了模型的基本假设、各子模型的结构和关系及其计算机理等．最后，以湘江流域为例，利用模型进行模拟计算，描述了湘江某河流断面的总磷随时间的动态变化趋势．结果表明，该模型可以为流域总磷污染控制提供科学的决策参考．

Dynamic Simulation United-Model and Validation of Total Phosphorus Pollutant of Basin

In this paper,the influence of the different origin phosphorus on the quality of the aim water body was analyzed.The production way about phosphorus of the basin(including point sources and area sources) and its transfer rule in the rivers and in the soil were analyzed,too.Dynamic simulation united-model of total phosphorus pollutant was established on basis of the element of uncertain influence decomposition model method.The basic supposition of the mode,the structure and the relations of various little model and it's computation mechanism had been discussed.Finally,with the Xiangjiang River basin as the example,the simulation computation was carried out by the model.The dynamic variety tendency about total phosphorus of a section of the Xiangjiang River along with the time was described.The result indicated this model may provide the scientific policy-making reference for the total phosphorus contamination control of the basin.