polar ordination meaning in Chinese

极定位法

Two - dimensional polar ordination of plant community of alpine grassland in eastern qilian mountains
东祁连山高寒草地植物群落二维极点排序
Based on a systematic investigation on the predatory natural enemy community in cotton fields to the north of the huaihe river of anhui province , the methods of polar ordination ( po ) and fuzzy cluster analysis ( fca ) were employed to study the dynamic classification of predatory natural enemy community in cotton fields and the method of principal component analysis ( pca ) was employed to study the major stages of change of predatory enemy community in cotton fields during the process of cotton growth and development
摘要在对安徽省淮北棉田捕食性天敌群落进行系统调查的基础上，采用极点排序和模糊聚类分析方法，研究了棉田捕食性天敌群落的动态分类；采用主成分分析方法，研究了棉田捕食性天敌群落在棉花生长发育过程中演变的主要阶段。