Based on the characteristics of fuzziness and impreciseness of soil, topography, rainfall and vegetation, the parameters were defined as triangular fuzzy numbers.

• 摘要基于土壤可蚀性因子、地形因子、植被覆盖因子等的模糊性、不精确性，运用模糊理论将这些影响因子定义为三角模糊数。