森林流域坡地壤中流模型与模拟研究

本文以水量平衡原理、动力学假设以及饱和导水率与有效孔隙度的对数递减模型为基础，提出了一个形式简单的森林流域坡地壤中流模型（以下称为改进模型）。并以二道白河森林流域内阔叶红松林土壤为背景制作模拟坡面，在模拟坡面上用两场不同强度的降雨对该模型进行了验证；同时，本文也分别用Ｓｌｏａｎ所提出的贮水泄流模型（以下称Ｓｌｏａｎ模型）与Ｒｏｂｉｎｓｏｎ所修改后的贮水泄流模型（以下称Ｒｏｂｉｎｓｏｎ模型）对这两场降雨进行了预测，并将这３个模型预测的结果与实测结果进行了比较。结果表明，改进模型精度比其它两个模型高。

SIMULATION AND MODEL OF INTERFLOW ON HILLSLOPE OF FOREST CATCHMENT

By taking soil samples from field at different soil depth in different undestroyed forest soil in the Natural Preserve Region of Changbai Mountain,measuring their saturated conductivity and effective porosity,we put forward logarithmic submodels that saturated conductivity and effective porosity vary with depth.Then,substituting those submodels into Sloan's storagedischarge model,a simple modified storagedischarge model of interflow based on the balance of water and kinematic assumption was presented in this paper.The interflow processes of two rainfall events were simulated separately on a simulated hillslope of forest catchment in Forest Hydrological Modeling Laboratory of Changbai Mountain Forest Ecosystem Research Station,Chinese Academy of Sciences, and the modified model was tested and verified by comparing the hydrograph of interflow predicted by the model with measured hydrograph.The simulated hillslope used the hillslope of broadleaved Korean pine forest in catchment of Erdaobai River as background.At the same time,we compared our model,Sloan's model and Robinson's model with the measured results simultaneously,too.The results of comparison show that our model is better than the others,especially,our model yields excellent results at simulating total volume of interflow,peak time,peak flow,and delay time.