BTOPMC模型在无资料地区的径流模拟

The Runoff Simulation Based on The BTOPMC Model in Free of Observational Date Catchments

选取嘉陵江中游的9个流域,采用参数移植法的区域化方法,研究分布式水文模型BTOPMC在无资料地区的径流模拟结果。取8个流域作为参证流域,一个有资料的流域作为＂无资料＂地区,结果表明,单个流域率定的参数运用到＂无资料＂地区用于径流模拟时,模拟的精度存在很大的不确定性,而将多个流域参数率定的参数综合用于无资料地区的径流模拟时,不确定因素明显消除,当参证流域为2-5个时,模拟精度最好,之后随着参证流域的增多,模拟精度逐渐减小。本次研究为分布式水文模型BTOPMC模型在无资料的中小流域应用提供一定依据。

This paper uses the distributed hydrological model BTOPMC,select nine catchments in the middle reaches of the Jia LingJiang basin,use the parameter transplant of the regionalization methods to study the runoff simulation results in ungauged watersheds.We choice eight catchments to calibrate parameters,a catchment is used to verify.The results show that,the precision of the simulation is uncertainly when the parameters of single catchment rate.The uncertain factors are disappeared when use several parameters of catchment rate.The simulation precision is best when the complement catchments are 2~5,the simulation accuracy decrease after increasing of the catchments.This study provide certain basis for using the distributed hydrological model BTOPMC in free observational data catchments.