城市街道绿化树种结构量化研究方法

本文主要从调查方法选择和群落结构特征参数计算两方面阐述了城市街道绿化树种结构量化研究方法。其中着重分析了在城市街道绿化树种结构研究中运用分层随机抽样调查法应如何进行分层与如何确定合适的样本量 ;同时介绍了城市街道绿化树种各类结构特征参数的具体计算公式 ,重点分析了用Shannon wiener指数和Simpson指数计算城市街道绿化树种多样性指数的差异性 ,强调了城市街道绿化树木物种重要值不需计算频度

The Research Method of Quantifying the Structure of Urban Street Tree Populations

The research method of quantifying the structure of street tree populations was mainly described from the survey method selection and the calculation of the parameters of street tree populations. At the same time it was analyzed how to stratify the stratums and define the optimal samples by the stratified random sampling in the study of street tree populations, and some formulas were introduced for calculating the parameters of the urban street tree populations. In addition, Shannon-wiener index was compared with Simpson index in calculating the diversity index of tree species for planting urban street and the importance of the planting tree species was emphasized without containing relative frequency.