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本文利用主成分分析法对东北东部山区内41个气象站的气候因子进行了分析。利用聚类分析和多因子立地分类法对天然水曲柳进行了立地区划。同时,对每个立地单元内水曲柳的分布、生产力及天然更新状况进行了评价。结果表明:对水曲柳分布与生长影响较大的气候因子是≥10℃积温、年降水量和1月均温;水曲柳分布区被区划成2个立地地区和6个立地区,其中长白山北部山地区是水曲柳的中心产区,而小兴安岭山地区和千山低山丘陵区是水曲柳的边缘分布区。
In this paper, the climatic factors of 41 weather stations in the eastern mountainous area of Northeast China are analyzed by using principal component analysis. Using the method of cluster analysis and multi-factor site classification, the regional division of natural Fraxinus mandshurica was carried out. At the same time, the distribution, productivity and natural regeneration of Fraxinus mandshurica in each site were evaluated. The results showed that climatic factors with a great influence on the distribution and growth of Ash were ≥10 ℃ accumulated temperature, annual precipitation and January average temperature. The distribution area of ash was divided into 2 sites and 6 sites, The northern mountainous area of Changbai Mountain is the central producing area of Fraxinus mandshurica, while the areas of Xiaoxing’anling Mountain and Qianshan Hilly Area are the marginal areas of Fraxinus mandshurica.