浙江省马尾松人工林立地质量的数量化研究

A Quantitative Research on the Site Quality of Pinus massoniana Plantation in Zhejiang Province

根据浙江２９０块马尾松人工林样地的８个立地因子和９个交互作用因子数据，运用逐步回归、交互逐步回归及数量化理论Ⅰ三种方法，剔除无效变量，分别对武夷山北坡产区、天目山产区及浙东、浙西丘陵产区所调查的立地因子（海拔高、土层厚度、黑土层厚度、坡位、坡向等），进行统计分析与检验。从剩余标准差、方差比、复相关和偏相关等检验结果看，以数量化法计算结果最精确，交互逐步回归法次之。本文还根据入选因子类目的相关距阵，用数量化理论Ⅰ法计算出立地质量得分值，并编出三个产区的数量化地位指数表。

According to the data of eight site factors and nine interaction factors of 290investigation plots of Pinus massoniana plantation in Zhejiang, the regression with interac-tion factors and quantitative theory Ⅰ were used in the calculation(the uneffective variableswere picked off). The site factors, such as :altitude,thickness of soil and fertility of the firstlayer,slope position,orientation of slope etc. of north slope of Wu Yi Shan Mountain, TianMu Shan Mountain, Eastern and Western hill area of Zhejiang were analyzed by statistics. The statistics test on distrepance standard deviation, variance ratio,mnultiole correlation andpartial correlation shows :the result of quatitative method is the most precise one.