摘要
光肩星天牛是糖槭、杨、柳、榆等树种的主要蛀干害虫之一。通过测定6种不同的判断空间分布格局的聚集度指标,并应用Taylor幂法则和Iwao回归分析法,得出光肩星天牛幼虫空间分布型为聚集分布,聚集原因是由本身的生物学特性和环境异质性共同作用引起的;另外,根据距离干基部的不同位置划分为3个高度,得出不同高度的虫口数量在1%水平达显著差异,且2 m以上的虫口数量最多。
Anoplophora glabripennis is one of the major pests which damage Acer saccharum, poplar,willow, Ulmus pumila. Six kinds of aggregation indices of distribution pattern were examined by using Iwao＇ s regression analysis and Taylor＇ s power law. The result shows that the larvae spatial distribution pattern ofAnoplophora glabripennis is aggregation distribution;the aggregation were caused by both the insect＇ s biological characteristics and the environmental heterogeneity;in addition, 3 different positions away from the base of trunk were divided; there is significant difference on the level of 1% in the quantity of the pests among the different positions ; the quantity of the pests are maximum up to 2 m.
出处
《防护林科技》
2009年第2期17-18,共2页
Protection Forest Science and Technology
基金
哈尔滨市科技局项目
关键词
光肩星天牛
空间分布型
聚集度指标
Anoplophora glabripennis
spatial distribution pattern
aggregation indices
