BI-PLOT TO SHOW CORRELATIONS OF ENVIRONMENTAL VARIABLES IN SELF-ORGANIZING FEATURE MAP ORDINATION

被引:2
|
作者
Song, Naiqi [1 ]
Yan, Yongmei [2 ]
Li, Junling [2 ]
机构
[1] Beijing Univ Chinese Med, Sch Chinese Mat Med, Beijing 102488, Peoples R China
[2] Beijing Normal Univ, Coll Life Sci, Minist Educ, Key Lab Biodivers Sci & Ecol Engn, Beijing 100875, Peoples R China
基金
中国国家自然科学基金;
关键词
direct ordination; bi-plot; self-organizing feature map; plant community; COMMUNITIES;
D O I
10.17654/BS017020359
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
Self-organizing feature map (SOFM) ordination is a new ordination method based on natural neural networks theory in analysis of community-environment relation. However, it is indirect ordination method and cannot combine environmental data. We combine species data with environmental data to construct a bi-plot of SOFM by use of correlation analysis. This was applied to community-environment analysis in the Taihang Mountain. The results showed that the bi-plot of SOFM described the relationships of samples, communities and species with environmental variables clearly. It provided consistent results with CCA. We can conclude that the bi-plot of SOFM is perfectly useful in vegetation-environment analysis.
引用
收藏
页码:359 / 370
页数:12
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