黄连木隆脉木虱空间格局的研究  

The spatial distribution pattern of Agonoscena cyphonopistae Li

作　　者：王强[1] 李照会[1] 王如刚[1] 董宇奎[1] 

机构地区：[1]山东农业大学植物保护学院,山东泰安271018

出　　处：《山东农业科学》2005年第3期45-47,共3页Shandong Agricultural Sciences

摘　　要：应用聚集度指标和回归分析,对黄连木隆脉木虱空间分布型进行测定,结果表明:黄连木隆脉木虱的成虫在黄连木林中呈聚集分布,聚集度随虫口密度增大而增强,从而确定出不同种群密度下最适抽样数。通过林间调查和数理统计分析,黄连木隆脉木虱在不同郁闭度、树冠不同层次虫口数量差异均不显著。Measured by cluster index and regressive analysis method, the spatial distribution pattern of Agonoscena cyphonopistae Li was studied. The results showed that in Pistacia chinensis Bunge forest, the spatial distribution pattern of Agonoscena cyphonopistae Li are tested to aggregative distribution.The optimal sampling number for different population density was analyzed and calculated.Depending on the result of forest survey and mathematical analysis,it was also found that population density were not significantly different at different levels of upper.middle and lower,and in different density of plantcover.

关 键 词：黄连木 隆脉木虱 空间分布型 聚集度指标 

分 类 号：S763.49[农业科学—森林保护学]