通过在日本落叶松人工林分内设置临时标准地,获取了坡向、坡度、海拔、pH值、土层厚度、壤位和平均树高等因子。首先应用逐步回归法筛选出了4个影响显著的生境因子坡向、坡度、海拔和土层厚度;通过层次分析法确定了各显著影响因子的权重,海拔的权重为0.0616,土层厚度的权重为0.1737,坡度的权重为0.2910,坡向的权重为0.4737;对不同的因子,按其与日本落叶松生长的关系分为不同的水平,按层次分析法排序后的结论为:阴坡排第一位,I级到Ⅲ级坡度(5-25°)的平缓斜坡排第二位,半阴坡排第三位,海拔1520-1600m排第16位即最后一位。
The habitat factors of aspect, slope, attitude, pH value, soil thickness, slope section and average height of trees were acquired by setting provisional standard blocks of Larix Kaempferi plantation stand. First the stepwise regression was applied to screen the habitat factors, then analytic hierarchy (AHP) process was applied to determined the weights of the factors. The following four habitat factors impact Larix Kaempferi's growth significantly: aspect, slope, attitude and soil thickness. And the weights of the factors are as follows: attitude 0.0616, soil thickness 0.173 7, slope 0.2910, aspect 0.4737. Different habitat factors impact the growth of Larix Kaempferi in varying degrees:north slope ranks I, slope from I to Ⅲ(5 -25°)ranks 2,half north slope ranks 3 ,and attitude from 1520 to 1600m ranks the last.