日本龟蜡蚧空间分布型的研究

Spatial Patterns of Ceroplastes japonicus in Zhejiang Province

本文采用扩散系数C,Morisita扩散指标I_δ,聚集度指标I,Cassie指标Ca,Lloyd聚块性指标L和Iwao平均拥挤度X与平均数X回归分析法,测定了日本龟蜡蚧越冬雌成虫和1龄固定若虫的空间分布型属于聚集分布,同时探讨了其在确定最适抽样数及序贯抽样中的应用。

Spatial patterns for the first instar larvae and hibernative female adults of Ceroplastes japonicus are analyzed by means of seven indices of aggregation based on the data obtained from the highway trees in Xiaoshan City, Zhejiang Province. The indices are applied to the determination of fittest sampling numbers and the sequential analysis, and indicate that the first instar larvae and the hibernative female adults are of the aggregation patterns.