摘要
应用模糊聚类和ＰＣＡ排序方法对太白山针叶林进行了分类和排序，利用多元回归分析将排序值与环境参数相联系而给出群落的定量环境解释．分析表明，太白山针叶林的类型及分布主要取决于海拔、降水和热量．模糊聚类的截取水平选在模糊关系变化较大之处。
The coniferous forests in Taibai mountain were classified and ordinated using fuzzy clustering and PCA (Principal components analysis) ordination. Based on the multivariate regression analysis of ordination axes and environmental parameters, the environmental interpretation of 26 plant community samples are given. It is showen by the analytsis that the coniferous forest types of Taibai mountain and their distribution are mainly determined by the thermal and moisture gradients. The cutting level in fuzzy clustering used are discussed.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第2期60-63,共4页
Journal of Shaanxi Normal University：Natural Science Edition
基金
陕西师范大学青年科学基金
关键词
数量分类
排序
太白山
针叶林
Taibai mountain
coniferous forest
ordination
quantitative classification
