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利用２３６块野外标准地资料，运用数量化理论Ⅰ及广义方差分析方法，确定了土层厚度、海拔、坡向为影响林木生长的主导立地因子。３个主导因子共构成６０个立地类型。参照石灰岩山地油松、侧柏、刺槐等树种立地划分研究结果，将６０个立地类型中的３５个划为适于用材林的立地类型，剩余２５个为水保林的立地类型，利用最优分割法，将２５个水保林立地类型划分为３个立地类型组，并对每个立地类型组的立地特点及生产力做了评价。
Based on the data of 236 field standards, quantitative analysis theory Ⅰ and generalized variance analysis were used to determine the factors affecting the forest growth, such as soil thickness, altitude and aspect. The three dominant factors make up a total of 60 site types. According to the results of site division of tree species such as Pinus tabulaeformis, Platycladus orientalis and Robinia pseudoacacia in limestone, 35 of the 60 site types were classified as site types suitable for Timber forests and the remaining 25 were site types of Shuibulin with optimal segmentation Method, the 25 types of reservoirs were divided into 3 types of site-type groups, and the site characteristics and productivity of each site-type group were evaluated.