摘要
文章介绍了以样枝为取样单位,采用8种聚集度指标和三种概率频次分布来确定樟子松梢小卷蛾(Rhyacionia pinicolana(Doubleday))幼虫的空间分布型。测定结果表明,樟子松梢小卷蛾(Rhya-cionia pinicolana(Doubleday))幼虫呈Neyman分布,且在一切密度下都呈聚集分布,聚集程度不因种群密度的变化而变化。同时介绍了空间分布型在最适抽样数的确定及序贯抽样中的应用。
This paper introduced a method that can be used to determine the spatial pattern of Orange-spottd shoot moth（Rhyacionia pinicolann（Doubleday）） by using three kinds of assemble and three kinds of frequeocy disbibutions,The quota resuIts ofthe determinations showed that the larva of orenge-spotted shoot moth were tally with Neyman dis
出处
《内蒙古林业调查设计》
2011年第6期74-76,88,共4页
Inner Mongolia Forestry Investigation and Design
关键词
樟子松梢小卷蛾
幼虫
空间分布
tribution in all population density
The usage of spatial pettern on the determioation of the sample number and the sampling method was discussed too
