大青叶蝉卵痕在果树上的空间分布及其应用  

Spatial Distribution of Mark of Ova of Cicadella viridis in Fruit Trees and Its Application

作　　者：刘玉娟[1] 牟玉杰[1] 王春艳[1] 

机构地区：[1]内蒙古扎兰屯林业学校,内蒙古扎兰屯162650

出　　处：《内蒙古林业科技》2004年第1期22-24,共3页Journal of Inner Mongolia Forestry Science and Technology

摘　　要：本文采用扩散系数 C、负二项分布 K值、CA 指数等 6种聚集度指标测定大青叶蝉卵痕在沙果树上的空间分布 ,其结果为聚集分布。并用聚集均数 λ说明聚集是由种群的生物学特性引起的 。Spatial distribution of mark of ova of Cicadella viridis in Malus asiatica Nakai has been measured by use of six kinds of index of aggregation degree, such as diffusion coefficient C, C A index, and so on. The results show they appear aggregative distribution. Aggregation is caused by biological characteristics of population using average number of aggregation λ. Meanwhile, application of spatial distribution pattern has been discussed on sequential sampling.

关 键 词：大青叶蝉 卵痕 空间分布 序贯抽样 

分 类 号：S763.35[农业科学—森林保护学]