基于HUBEX试验资料的土壤水时空分布模拟

Simulation of Soil Moisture Distribution Based on HUBEX Data

利用全球能量与水循环(GEWEX)亚洲季风试验(GAME)区淮河流域试验(HUBEX)1998年观测数据,在构建数字流域的基础上,运用新安江模型对HUBEX水文强化观测区——史灌河流域的水文过程进行模拟,不仅检验了流域出口断面的流量过程,而且检验了土壤水状态变量的时空变化过程.结果表明,新安江模型中表达土壤湿度指标的土壤蓄水量计算值能够反映土壤水分的时空变化过程,这从一个侧面证明了新安江模型土壤湿度计算模块结构设计的正确性.

： On the basis of digital basin resulted from Digital Elevation Model， the HUBEX （Huaihe River Basin Experiment） enhanced observation data in the Shiguanhe Catchment in 1998， as a contribution to GEWEX （Global Energy and Water Cycle Experiment） Asian Monsoon Experiment （GAME） Project， are used for the simulation of hydrological processes， including runoff process as well as soil moisture distribution both on time scale and on space scale， by the help of the Xin＇anjiang Model． It is shown that soil tension water storage in the Xin＇anjiang Model， which stands for the index of soil moisture， could represent spatiotemporal distribution of soil moisture． From one aspect， that justifies the structure of soil moisture module in the Xin＇anjiang Model when it is applied to the humid or semi－humid areas．