摘要
为了了解李园节肢动物群落的结构、特征,发挥生态系统中自然因素对害虫的生态调控作用,采用系统调查方法,在分析李园节肢动物群落结构和组织水平的基础上,对李园节肢动物群落的时间动态进行聚类分析,结果表明,对不同时期的总群落、亚群落进行模糊聚类得出结果,总群落的12次调查结果可以聚为5类,D =0 . 2 0 0 0 ,3、11、7和6月初各自归为一类,其余归为一类.天敌亚群落调查结果也聚为5类,D =0 . 2 0 0 0 ,3、7、8月各自归为一类,9月和10月归为一类,其余归为一类.非天敌亚群落调查结果同样聚为5类,D =0 . 10 0 0 ,4、7、6、11月各自归为一类,其余归为一类.聚类结果部分反映了群落状况的季节差异,聚类交替现象反映了群落结构复杂性.最优分割结果将总群落、各亚群落均分割为5个阶段,即4月6日为第一阶段,4月2 7日~6月8日为第二阶段,6月2 7日~8月2 7日为第三阶段,9月2 1日~10月19日为第四阶段,11月2 2日为第5阶段.反映了各阶段物种种类、数量等其他指标在发生时间上存在的差异.
In this paper,twelve investigations were conducted on the structural feature of arthropod community in a plum orchard,and a cluster analysis was made on the temporal dynamics of the community.The total community could be clustered into 5 clusters (D=0.2000),i.e.,that in March,in June,in July,in November,and in other months.The natural enemy and pest-neutral sub-communities could be also clustered into 5 clusters,respectively.For natural enemy sub-community,the clusters (D=0.2000) were that in March,in July,in August,in September and October,and in other months,and for pest-neutral sub-community,they (D=0.1000) were that in April,in July,in June,in November,and in other months.The results of cluster analysis partly reflected the seasonal differences of total community and sub-communities,while the temporal overlaps of cluster results reflected the complexity of community structure.Based on the optimization cut-apart,both the total community and the sub-communities were divided into 5 stages,i.e.,6 April as the first stage,27 April to 8 June as the second stage,27 June to 27 August as the third stage,21 September to 19 October as the forth stage,and 22 November as the fifth stage.
出处
《应用生态学报》
CAS
CSCD
北大核心
2005年第4期631-636,共6页
Chinese Journal of Applied Ecology
基金
国家农业综合开发省级科技项目 (NFZ2 0 0 1 15 11)
安徽省教育厅基金资助项目 (2 0 0 2KJ10 1)
关键词
李园
节肢动物群落
时间动态
聚类分析
Plum orchard, Arthropod community, Dynamic, Cluster analysis