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本文利用闽北地区487块异龄林固定样地材料，采用主成分分析方法，对该区异龄林地位因子进行了研究。结果表明，闽北异龄林地位因子是海拔、坡向、坡度和坡位。在此基础上，建立了闽北异龄林地位因子主成分综合值模型，为该区异龄林地位分类提供科学依据。
In this paper, we use 487 samples of different age forest fixation in North Fujian Province to study the status factors of different age forests in this area by principal component analysis. The results showed that the status factors of different age forests in North Fujian were altitude, aspect, slope and slope. On this basis, the integrated principal component value model of status factors of different age forests was established, which provided scientific basis for the classification of different age forests in this area.