摘要
本文用聚集度指标法测定了多纹豹蠹蛾幼虫空间分布型,结果表明幼虫分布型属随机分布。四种抽样方法比较结果,五点式取样法精确度最高。分析并计算了林间调查的最适抽样数,进行了幼虫序贯抽样的计算。
Spatial distribution patterns for larvae of Zeuzera multitrigt Moore were measured by means of several indexes of aggregation in Fuji Province. Frequency bistribution of larvae fits in with Poisson distribution quite well. The results of four sampling methods show that sampling of agon proved to be the best.
By Iwao's methods the optimal sampling number of forest survey is analysed and calculated, the sequential analysis is also applied.
出处
《福建林学院学报》
CSCD
1989年第2期112-117,共6页
Journal of Fujian College of Forestry
关键词
多纹豹蠹蛾
空间分布
序贯抽样
spatial distribution pattern, sampling method,sequential sampling, Zeuzera multitrigata
