BTOPMC模型与新安江模型在史河上游的应用比较研究

Comparison between BTOPMC Model and Xin'anjiang Model in Application for Upstream of the Shihe River

介绍了一个由TOPMODEL发展而来的基于栅格的分布式水文模型——BTOPMC模型。选取史河流域黄泥庄水文站以上集水面积为研究区域,在空间分辨率为30秒的数字高程模型数据基础上构建数字流域水系,基于IGBP全球陆面土地覆被数据以及FAO全球数字土壤数据运用BTOPMC模型和新安江模型分别对黄泥庄站1982年到1987年的日径流过程进行模拟。采用模拟与实测洪量比和确定性系数对两个模型的模拟结果进行比较分析。结果表明两个模型都能很好地模拟日径流过程,新安江模型有更好的模拟效果。

This paper introduced a distributed hydrological model called BTOPMC model, which was developed from the TOPMODEL. The area controlled by Huangnizhuang Hydrometric Station on the upstream of the Shi River was selected as the target region. Based on the 30s-resolution grld-based digital elevation model data, the digital drainage network was generated. BTOPMC model and Xin＇anjiang model were applied in the target region for simulating the daily hydrograph from 1982 to 1987 based on the land cover data of IGBP and the soil type data of FAO： Two criterions, the ratio of calculating discharge and observed discharge and the Nash-coefficient, were used for evaluating the simulated data. The results show that both models are good at simulating the daily hydrograph in this region and Xin＇anjiang model has a better effect than the other.