在种群生态学的研究中，要把特征相似的群落进行比较，找出它们之间的相似程度，即群落系数（coefficient of community）。计算群落相似性系数的方法很多，下面介绍2种常用的方法。
基于56个网页-相关网页
... 关连系数；社会(联体)系数 coefficient of association 亲近系数 coefficient of closeness 群集系数 coefficient of community ...
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Coefficient of Community Similarity 群落相似系数 ; 群集相似系数
The results showed that there were 18 species of natural enemies in the communities. The highest coefficient of community similarity was 95.12%, and the lowest coefficient was 73.86%.
结果表明，白蜡虫泌蜡期天敌群落共有捕食和寄生性天敌18种，各群落的优势种和物种组成变化较小，群落相似性程度较高，相似性系数最高达95.12%，最低为73.86%。
The minimum sampling area of a major plant community in Meiziya Region was studied by using methods of species area curves and community coefficient area curves.
用种面积曲线和群落系数面积曲线的方法对宜昌梅子垭地区一种主要植物群落类型的最小面积进行了研究。
Equity of community health resources distribution was evaluated by Gini coefficient, which calculated with data of community health service organizations collected by health Bureau of Fujian in 2004.
利用2004年福建省卫生厅调查的社区卫生服务机构相关统计资料，通过计算基尼系数，评价福建省社区卫生资源分布的公平性。
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