杨干透翅蛾种群空间分布型及其应用的研究  

Spatial Distribution Pattern of Sesia siningensis and its Application

作　　者：李成泉 

机构地区：[1]青海省乐都县上北山林场,青海乐都810700

出　　处：《陕西林业科技》2009年第4期15-18,共4页Shaanxi Forest Science and Technology

摘　　要：利用平均拥挤度、扩散指数等5种聚集度指标以及Iwao回归模型、Taylor冥法则等方法分析了杨干透翅蛾幼虫种群的空间分布型。对结果分析得到杨干透翅蛾幼虫种群在林内呈现聚集分布,并且聚集度高;采用聚集均数法进行进一步分析表明聚集原因主要为生物学特性所致。同时,对杨干透翅蛾幼虫种群的理论抽样数和序贯抽样技术进行了初步研究。Spatial distribution pattern of Sesia siningensis in Qinghai Province was analyzed in terms of 5 aggregation indices such as diffusion index and mean crowding,as well as in terms of Iwao＇s regression analysis and Taylor power principle.The results showed that the spatial distribution pattern was aggregative in a high level.Further study by Blackith＇s（1961） formula showed the aggregation resulted from bionomic of insects.Optimal sampling number and sequential sampling technique were also discussed.

关 键 词：杨干透翅蛾 杨树 空间分布型 抽样技术 

分 类 号：S763[农业科学—森林保护学]