影响侵蚀产沙过程的因素在时空上具有很大的不均匀性和变异性，增加了不同尺度间侵蚀产沙模拟的复杂性。
Factors affecting the processes of soil erosion and sediment yield have more asymmetry and variability and enhance the complexity of modeling sediment yield in different scales.
为改进陆面过程的参数化，初步探讨了模式中陆面气象要素次网格尺度不均匀性分布对模拟计算结果的影响。
To improve the parameterization of land surface processes, a preliminary analysis of the impact of subgrid land surface heterogeneity on model results is carried out.
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