长江流域水量模型初步研究

基于MIKEBASIN平台，将长江流域划分为91个子流域，采用NAM模型来模拟各分区径流过程，再将各分区NAM模型连接成为整体，构建了长江流域水量模型，并完成了模型系统中面雨量计算、参数批量修改、水库调度等关键功能的二次开发。模拟结果表明，模拟径流过程与实测过程基本一致。鉴于部分子流域面积过大，取、排水用户未纳入模型等原因，导致模拟年径流有所偏大，以汉江流域为试点进行了模型细化研究，显著提高了模拟精度，表明长江流域水量模型模拟精度尚有进一步提高的空间。

Preliminary research on water volume model of the Yangtze River Basin

Based on MikeBasin Platform,the Yangtze River Basin was divided into 91 sub-basins.The runoff process in divided sub-basins were simulated by NAM model,and the sub-basin NAM models were integrated as whole to construct the water volume model of the Yangtze River,and the secondary key function development of areal precipitation computation,batch revision of parameters,reservoir regulation etc.were completed.The simulation result show that the simulated runoff process is basically consistent with measured process.Because the areas of partial sub-basins are too large,water intakers and releasers not including in the model,the simulated annual runoff is larger than measured one.For this reason,more concrete research on the model in the Hanjiang River was conducted and the simulation accuracy was improved significantly,and this results also show that the simulation accuracy of Water Volume Model of the Yangtze River can be improved further.