摘要
本文着重研究了模型参数与自然条件的关系。参数分为蒸散发、产流、分水源与汇流四个层次,各决定于气象、气候、地质与地貌条件。用分层次分目标函数加结构性约束的方法可优化得出唯一解。结果表明:参数SM(表土自由水容量)对水源划分起决定作用,并初步找到了它与岩性之间的关系.本文还研制了集总性时变线性系统流域汇流模型,其两个参数可根据河网地貌推理计算出来,以上成果为无水文资料地区提供了模型应用的条件。
Parameters are divided into 4 layers:evapotranspiration runoff production,runoff separa- tion and runoff concentration,depending on metrological,climatical,geological and morphological conditions respectively.Optimizing parameters by layers with different objective functions,in addition to structural constraint,may give a unique solution.It is found that SM plays a leading role in runoff separation,and a relation between SM and rock property could be established.On basin concentration a lumped time variant linear.System model is derived,two parametes of which can be obtained by morphology of the river net.The above results facilitate the application of the model to districts lacking of hydrological data.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1992年第1期52-59,共8页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金
关键词
新安江模型
表土自由水容量
产流
汇流
时变线性系统
Xinanjiang Model
freewater capacity of the top soil
structural constraint
time variant linear system
