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以6个立地因子的分级数据作自变量,天然兴安落叶松优势木高作因变量,应用数量化理论Ⅰ进行回归分析表明,影响塔河林区天然兴安落叶松高生产因子由大到小的秩次是土壤种类、土层厚度、坡度、坡位、海拔高、坡向,前3个为主导因子。根据主导因子划分了立地类型,并对其立地质量进行了评价,为选择适宜造林地提供了依据。
Using the grading data of 6 site factors as the independent variable and the natural wood of Larix gmelinii as the dominant variable, regression analysis using quantitative theory Ⅰ showed that the factors influencing the high production factors of natural Larix gmelinii in Tahe Forest Region were from large to small Ranks are soil types, soil thickness, slope, slope position, elevation, slope, the first three as the dominant factor. According to the dominant factor, the type of site was divided and its site quality was evaluated, which provided the basis for choosing suitable site for afforestation.