漠河林区兴安落叶松林数值分类和排序的研究

本文应用主坐标分析、ISODATA-模糊聚类分析、极点排序等3种多元统计分析方法,以各森林群落的主要植物种为属性,结合定性分析,对漠河林区的6个兴安落叶松林型进行了分类和排序。结果表明,二维排序图在一定程度上揭示了植被及生境梯度的变化。并分析了这3种方法的优缺点。在有条件时,最好同时应用几种方法,以便于比较,更能说明问题。

Quantitative Classification and Ordination of the Natural Forest of Larix gmelinii in Mohe Forest Area

In this paper, based on the main plant species attribution of each sample plot and combined with qualitative analysis, 6 major communities of Form. Larix gmelinii are classified and ordinated with the ways of principal axes analysis, ISODATA-Fuzzy cluster analysis and polar ordination. The results show that the two-dimensioned graph of ordination can indicate the change of vegetation and habitat to the extent. And the effectiveness of the three ways is discussed. We suggest that several methods had better be used at same time and ordination combined with classification, so that more satisfactory effect can be obtained.