落叶松八齿小蠹坑道在落叶松立木上的垂直分布特征  

Gallery vertical distribution pattern of Ips subelongatus in standing larch

作　　者：袁菲[1,2] 骆有庆[1] 石娟[1] Kari Heliovaara 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点试验室,北京100083 [2]中国林业科学研究院森林生态环境与保护研究所森林保护学国家林业局重点实验室,北京100091 [3]赫尔辛基大学应用生物学学院,芬兰FIN-00014

出　　处：《应用昆虫学报》2011年第4期1011-1016,共6页Chinese Journal of Applied Entomology

基　　金：北京林业大学中芬合作项目Biodiversity and Forest Pests Problem in Northeast China(BIOPROC1114201);公益性行业(林业)科研专项(200904029);中央高校基本科研业务费专项资金资助(TD2010-4)

摘　　要：应用多个聚集度指标和Iwao,Taylor等的回归分析法对落叶松八齿小蠹Ips subelongatus Motschulsky坑道的垂直分布型进行了研究。结果表明:落叶松八齿小蠹坑道数量与落叶松树干不同高度变化成线性关系,拟合的直线方程为y=-10.867x+92.884;落叶松八齿小蠹坑道基本属于均匀分布;坑道的分布与落叶松立木阴面和阳面关系不大。最后确定了不同落叶松八齿小蠹坑道密度下的最适抽样数。The vertical distribution pattern of Ips subelongatus Motschulsky galleries was examined using the aggregation indices of Iwao and Taylor.The results indicate that the number of I.subelongatus galleries has a linear relationship with different heights of larch trunks;the relationship being described by the equation y= - 10.867x＋92.884.Galleries of I.subelongatus have a uniform spatial distribution with no difference in abundance between sunny and shaded sides of the tree.The optimum sampling number was determined for different gallery densities.

关 键 词：落叶松八齿小蠹坑道 垂直分布 聚集度指标 回归分析法 

分 类 号：S763.7[农业科学—森林保护学] Q968[农业科学—林学]