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根据群落生态学原理 ,为了利用天敌资源开展石榴园害虫的生物防治 ,明确主要害虫及其天敌发生的时间动态和数量动态 ,对不同时期的石榴园节肢动物总群落、亚群落进行了模糊聚类 .结果表明 ,总群落的 8次调查结果可聚为 4类 ,D =0 0 5 ;天敌亚群落调查结果可聚为 4类 ,D =0 10 ;非天敌亚群落调查结果可聚为 3类 ,D =0 0 9.聚类部分反映了总群落和亚群落各自的状况 ,聚类交替现象则反映了群落结构在较长时间内的复杂性 .最优分割结果将不同时期的总群落、各亚群落均分割为 3段 (4～ 8月、9～ 10月、11～ 11月 ) ,表明各阶段物种种类、物种数及优势种等指标在发生时间上存在差异 .
According to the principles of community ecology, in order to utilize natural enemies resources to carry out biological control of pomegranate pests, the time dynamics and quantitative dynamics of major pests and their natural enemies were clarified. The total community and sub-communities of podgall orchards in different periods were clustered by fuzzy clustering The results showed that the survey results of the total population can be classified into four categories, D = 0 0 5; the investigation results of natural enemies sub-communities can be classified into 4 categories, D = 0 10; , D = 0 0 9. The clustering part reflects the status of the total community and the sub-community, and the clustering alternation phenomenon reflects the complexity of the community structure in a long time.The optimal segmentation results will be the total community at different periods, The sub-communities were divided into 3 segments (April to August, September to October, November to November), indicating that the species, species numbers and dominant species in each stage differed in their occurrence time.