摘要
本文研究了葛藤天敌紫茎甲SagrafemorataLichtenstein的空间水平分布和垂直分布 ,结果表明 :( 1 )紫茎甲幼虫在水平呈聚集分布 ,基本成分是个体群 ,且具聚集度对密度的依赖性 ,幼虫田间理论抽样公式N =( 3. 340 1 /M+0 . 5 1 47) /D2 ;( 2 )紫茎甲幼虫垂直分布符合负二项分布和核心分布。
The research on the level and vertical spatial distribution of the purple stem beetle larvae indicated that(l)the level spatial distribution is aggregating and the basic component of distribution is colony. There is a correlation between the aggregating intensity and the population density. The sampling equation is as follows:N=(3.3401/M+0.5147)/D+2;(2)the vertical spatial distribution is not only nucleus but also negative binomial distribution.
出处
《昆虫天敌》
CSCD
2003年第3期125-129,共5页
Natural Enemies of Insects
基金
中美合作课题"昆虫对野葛控制作用研究"资助 ( 1 999- 2 0 0 0 )
关键词
葛藤
天敌
紫茎甲
幼虫
空间分布
豆科
Sagra femorata Lichtenstein
spatial distribution
sampling model
