一种陆面过程模式对径流的模拟研究

A Study of Streamflow Simulations Using A Land Surface Model

径流在陆面模式水量平衡计算中占有重要地位,它不但与土壤水的动态变化有关,而且会影响感热,潜热等其他通量的计算结果。作者针对陆面过程模式AVIM(At-mosphere Vegetation Interaction Model)对产流描述的不足,改进模式中对径流的参数化方法。并将改进后的模式用于内蒙古的锡林河流域,以检验模式对径流的模拟能力。1991～1994年的径流模拟结果表明,改进后的模式对径流的模拟有较好的改善。

Runoff plays an important role in land surface water budget. And it is highly correlated with soil moisture, which is closely related to evaporation and thus to the partition of sensible and latent heat fluxes at the surface. In this paper, the parameterization of runoff generation in AVIM (Atmosphere Vegetation Interaction Model) is improved. In order to validate the ability of AVIM to simulate streamflow, the model is applied to the Xilinhe River Basin in the Inner Mongolia. The simulated streamflow results in the period of 1991 - 1994 indicate that the modification of runoff generation scheme in AVIM is reasonable and effective.