中文摘要：

本文针对陆面过程模式BATS中没有水文非均匀描述的这一缺陷，将更符合物理过程实际的考虑入渗非均匀和降水非均匀的水文模型VXM并入BATS，并将此改进后的陆面过程参数化方案与MM5V3耦合。利用该区域水文气候模式模拟1990、1991和1998年夏季风气候，对模拟结果分析得知，总体上该模式的模拟能力对入渗非均匀和降水非均匀的响应是敏感的，而且考虑入渗非均匀和降水非均匀后模式的模拟能力得到了一定的提高。

英文摘要：

In this paper, the land surface model BATS that has no description of hydrological-process heterogeneities is incorporated with the hydrological model VXM, which accounts for infiltration heterogeneity and precipitation heterogeneity. Furthermore, the modified land surface scheme was coupled to MM5V3. Using this model, we simulated the summer monsoon climates of 1990, 1991 and 1998. The results showed that, as a whole, the model is quite sensitive to the infiltration heterogeneity and precipitation heterogeneity, and its simulation ability has been improved to some extent.