canoco5该软件主要用于群落排序：就是把一个地区内所调查的群落样地（物种），按照相似度来排定各样地的位序，从而分析各样地（物种）之间及其与环境之间的相互关系。-canoco5The software is mainly used for sorting communities: that is the one area communities surveyed plot (species), according to the similarity to schedule plots bit