TOPMODEL在珠江流域布柳河流域的应用及其与新安江模型的比较

Application of TOPMODEL in Buliu River catchment, Pearl River basin and comparison with Xin’anjiang model

TOPMODEL是一种以地形为基础的半分布式流域水文模型.对珠江流域布柳河流域的DEM信息进行处理,提取流域的水系、子流域边界、地形指数及水流路径距离的分布,将TOPMODEL应用于该流域中.另外将新安江模型也应用于该流域进行比较.此外,分析了两种模型结构差异所带来的模拟功能差异.两种模型模拟结果精度差异不大,而TOPMODEL实现了空间产流面积分布的可视化.

TOPMODEL is a semi-distributed model in which the predominant factors determining the formation of runoff are represented by the topography of the basin. In this paper we dealed with DEM information of Buliu river basin, extracting drainage network, sub-basin area, topographic index and distribution of runoff distance, and applied TOPMODEL in the basin. For the sake of comparison, the Xin＇anjiang model was also applied in the basin. Here we analyzed the difference of simulation function due to the frameworks of the two models. The simulation results of the two models have little difference; moreover TOPMODEL realized the visualization of soatial source area distribution.