基于主成分分析、聚类分析的绿化树种及其生理指标分类

Classification of Greening Trees Characteristic Indexes and Varieties of Trees Based on Principal Component Analysis and Cluster Analysis

本文对绿化树种的各项生理指标进行调查统计的基础上,运用主成分分析以及聚类分析的方法,对样本及其特征性指标进行分类分析。绿化树种主要生理指标包括:固碳量、释氧量、日总释水量、蒸腾吸热量、叶片含硫量、干重滞尘量、含铅量、含锌量。经分析发现:固碳量、释氧量、日总释水量、蒸腾吸热量属于一类指标,叶片含硫量、干重滞尘量、含铅量属于一类指标,含锌量是单独一类指标。某些绿化树种之间存在功能、效益的相互替代性,生理特性非常相近。此结论基本上是正确合理的,在环境治理和环境保护、城市规划、园林设计、住宅区绿地规划等等方面中,对于绿化树种的选择、配置,环境效益的评估,制定环境保护方案有较为直接的指导作用。

In this paper, the method of principal component analysis and cluster analysiswas applied in classification of greening trees characteristic indexes and varieties of trees, which was from the statistics of greening trees. The results showed that the contents of carbon sequestration,oxygen release,total water release,transpiratian heat absorption capacity,sulphur quantity,dry weight dust retention,lead quantity and zinc quantity make up the greening trees characteristic indexes. The contents of carbon sequestration,oxygen release,total water release and transpiration heat absorption capacity belong to one composition; the contents of sulphur quantity,dry weight dust retention and lead quantity belong to another composition,zinc quantity belongs to the last composition. Some of greening trees which have the similarity in some characters can replace each other. This result is exact basically, and it can plays a guiding role in the environmental management and environmental protection,urban planning,landscape design,residential green space planning and so on,for greening tree species selection configuration, environmental benefits evaluation and it could be the guidance of Formulating environmental protection scheme.