典范分析法在黄河三角洲菜州湾滨海区盐生植物群落研究中的应用

 典范变量分析能同时处理两种类型的变量集并给出它们之间的相关系数。本文采用该方法对黄河三角洲地区的10个植物群丛及其土壤的有关性质进行了分析。典范相关系数是0.9和1。文中同时求出了所有典范变量，保留了原数据的全部信息。结果表明该地区植被的动态变化与土壤水盐及有机质含量的动态变化显著相关。土壤的水盐动态是这一地区植被演替的制约因素。二维典范变量图较直观地表示出了群丛间的演替关系。初步判断出芦苇和白茅群丛是这一地区植被演替过程中相对稳定的阶段。该方法对研究植物群落的分布及植被演替等内容是很有帮助的。

The Application of Canonical Analysis in the Study of Halophyte Communities in the Region of Yellow River Delta

The canonical analysis can deal with two kinds of variables simultaneously and the interrelated coefficient results. Ten plant associations and their soil characteristics of Yellow River delta have been analysed by using this method. The canonical interrelated’ coefficients are 0.9 and 1. All the canonical variables have been calculated with the whole information of primary data retained. It is shown that there exists a close inter relation between the dynamic changes of vegetation and its soil characters. The dynamic change of soil water and salt is the restrictive factor of vegetation succession. The canonical variable ordination shows directly the succession relationship between plant associations. This method offers, a great help to the study of plant community distribution and vegetation succession.