摘要
本文主要论及枝叶截蓄，蒸散发和界面水分效应三个了模型。采用递减指数方程模拟林冠截蓄比随降水量的变化过程，导出时段截蓄量计算方程。采用分散式的三层蒸散发模型和水分传递方程，模拟流域蒸散发过程。本流域水文模型中，沿林床垂向剖面设置地表界面、浅尾界面、深层界面和下界面四个水分效应界面，以入渗方程为基础，计算降水产流量、各水源分量。至于各水源分量的河网总入流，则用线性蓄泄方程模拟。
Three Submodel for water storage ,evaporation and diffusion in branches and leaves,moisture ef-fects of interface are discussed here. Variation of corow canopy and water storage ratio with precipitationamount are simulated with decreasing exponentail equation from which water storage computation equation ina certain period is derived.With dispersed triplex evaporation and diffusion model and moisture transfer equa-tion,process of evaporation and diffusion in a basin is simulated.In the basin hydrological model,four mois-ture effect interfaces,that is superficial,shallow,deep and subsurface,are set up along the perpendicular sec-tion of forest bed.With basis on infiltration equation,runoff yield of precipitation and verious components ofheadwater are computed.TotaI inflow of river network for verious headwater components is simutlated bylinear storage and discharge equation.
出处
《四川水力发电》
1994年第2期21-27,共7页
Sichuan Hydropower
基金
国家自然科学基金
水电部科研基金
关键词
森林
枝叶截蓄
蒸散发
水文模型
water storage in branches and leaves,evaporation and diffusion in basin,moisture effect of inter-face
