在编制方旺林场森林经营方案中，根据林场立地条件，以成土母岩和土壤厚度为主导因子划分立地类型，运用直接模糊聚类方法，进行立地质量评价，取得了良好的分类效果。 In the preparation of forest management plan of Fangwang Forest Farm, according to the site condition of forest farm, the type of site was divided by the dominant factor of soil-forming mother rock and soil thickness, and the direct fuzzy clustering method was used to evaluate the site quality, and good classification results were obtained.