摘要
为减小河道栅格对地形指数分布的影响,引入适度指数法获取流域生成河道的起始临界值,并作为流域中河道栅格的上坡集水面积,使计算的地形指数更符合实际情况。基于TOPMODEL原理与地形指数计算的原理与流程,以腰古流域为例,采用次洪资料对模型进行了参数率定与检验。结果表明,TOPMODEL模拟精度较高。
In order to reduce the influence of channel grid on the distribution of topographic index, fitness index method is adopted to calculate CIT and it can be taken as the upslope catchment area of the channel grid, which makes the distributed of the topographic index more reasonable. Taking the Yaogu basin for an example, several floods data are used to calibrate and validate the model in terms of TOPMODEL principle and the process of topographic index calculation. The results show that the simulation precision of the TOPMODEL is high.
出处
《水电能源科学》
北大核心
2011年第6期14-17,共4页
Water Resources and Power
基金
国家自然科学基金资助重点项目(41030636)
国家自然科学基金资助项目(50879017)
"十一五"国家科技支撑计划基金资助项目(2008BAB29B08-02)
