摘要
中澳长江防洪及管理项目中引进水文Urbs模型,综合介绍了Urbs模型的基本原理以及在长江流域的应用情况。Urbs模型充分考虑流域下垫面水文特性的空间差异对流域降雨径流形成的影响,将流域分成若干个子分区,在各子分区上分别进行产汇流模拟并分段演算至流域出口断面。该模型是继新安江模型、API模型后在长江流域广泛适用的一种新的水文模型,对于长江水文预报中采用多模型比较,提高降雨径流预报精度,特别是无资料地区,具有较大的实用价值。
Urbs hydrological model has been introduced in the cooperative project of China and Australia.The basic principle of Urbs hydrological model and its application in the Yangtze river basin are comprehensively introduced.The influence of spatial difference of underlying surface hydrologic characteristics to precipitation-runoff formation is fully considered in Urbs model.In the model,the basin is divided into some sub-regions,and the runoff producing and confluence are simulated in sub-regions and computed step by step to the basin outlet.The model is a new hydrological model suited widely to the Yangtze basin after Xinanjiang model,API model.In the hydrological forecast, using multiple models for comparison has practical role to improve forecast accuracy,especially for the area without data.
出处
《人民长江》
北大核心
2008年第14期50-52,共3页
Yangtze River
