基于正交设计及EFDC模型的湖泊流域总量控制——以滇池流域为例

构建了基于正交设计-水质模拟-方案评价的污染物总量控制方案的方法体系，并应用于滇池流域.选择TN、TP作为总量控制指标，将滇池流域划分为6个子区单元，通过设计5水平（0%，5%，10%，15%，20%）6因素的正交试验表，得到25种不同削减方案；耦合EFDC模型模拟得到25种不同削减情景条件下湖泊水质的TN、TP浓度分布，计算各方案综合营养状态指数（TSI），筛选符合中度富营养化标准（60

Total emission control of water pollutant for the lake basin based on orthogonal experimental design and EFDC Model: A case study of Dianchi Basin

A systemic method was developed through integrating the orthogonal experimental design,water quality model and evaluation technique.Such method can be used for identifying the optimal total emission control schemes for the Lake Dianchi Basin. Firstly, TN and TP as the evaluating indicators were designed with 5levels (i.e., 0%, 5%, 10%, 15% and 20%, respectively); meanwhile, the entire Basin was divided into 6subareas. Accordingly, the orthogonal design table (6factors and 5levels) was employed and then 25 reduction scenarios would be generated. Secondly, the TN, TP and Chl-a concentration distribution of the Lake could be simulated by the EFDC Model under different reduction scenarios. Then, we could calculate the value of Trophic State Index (TSI), and select the eligible reduction scenarios if 60