大兴安岭落叶松毛虫虫害木结构特征分析  

Analysis of Pest Tree Structural Characteristics of Dendrolimus superans in the Great Xing’an Mountains

作　　者：王千雪 丛日征 韩大校 池成林 王晓红 闫大岭[3] WANG Qian-xue;CONG Ri-zheng;HAN Da-xiao;CHI Cheng-lin;WANG Xiao-hong;YAN Da-ling(Harbin Research Institute of Forestry Machinery,National Forestry and Grassland Administration,Harbin 150086,China;Reseach Center of Cold Temperate Forestry,CAF,Harbin 150086,China;Forest Pest Control Station of Chaoer Forest Industry Co.,ltd,Inner Mongolia Forest Industry Group,Yakeshi 002189,China)

机构地区：[1]国家林业和草原局哈尔滨林业机械研究所,哈尔滨150086 [2]中国林业科学研究院寒温带林业研究中心,哈尔滨150086 [3]中国内蒙古森工集团绰尔森林工业有限公司森防站,牙克石002189

出　　处：《温带林业研究》2022年第4期1-5,共5页Journal of Temperate Forestry Research

基　　金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2022MA004)。

摘　　要：【目的】了解落叶松毛虫林分的空间结构特征,为落叶松林的资源保护和落叶松毛虫的防控提供科学依据。【方法】以大兴安岭落叶松毛虫林分为研究对象,设置1 hm^(2)固定样地,利用固定样地内每木定位调查数据和分析统计软件,对落叶松毛虫虫害木进行一元分布和二元分布特征分析,对虫害木与其最近4株相邻木的关系进行分析。【结果】落叶松毛虫虫害木分布格局为聚集分布,非虫害木分布格局为均匀分布;虫害木和非虫害木的径阶结构为多峰山状曲线,虫害木中大径阶林木所占比例较大;虫害木最近4株相邻木中,2株为虫害木和3株为虫害木的比例最大,占全部的62.1%;在角尺度与大小比数二元分布中,大小比数为0.5和角尺度为0时的组合所占比例最大;在虫害木比和角尺度二元分布中,虫害木比为1和角尺度为0.5时的组合所占比例最大;在虫害木比和大小比数二元分布中,虫害木比为1和大小比数为0时的组合所占比例最大。【结论】落叶松毛虫的分布与林分空间结构有一定关系,聚集的空间格局会对落叶松毛虫虫害发展有一定的促进作用。一元分布特征能够了解虫害木与最近4株林木的总体特征和差异,二元分布能够更精细的提供落叶松毛虫林分空间结构特征。【Objective】This paper aims to understand the structure characters of Dendrolimus superans forest and provide scientific basis for the protection of larch forest and the prevention and control of Dendrolimus superans stands.【Method】The Dendrolimus superans forest in the Great Xing’an Mountains was chosen as the research object,and a 1 hm^(2) fixed sample plot was set up.The characteristics of the unitary distribution and the binary distribution of the pest trees were analyzed by fixed sample survey of each tree positioning data and the statistical software,and the relationship between the pest trees and their nearest four neighboring tree was analyzed.【Result】The distribution pattern of pest trees was aggregated,while that of nonpest tree was uniform.The diameter class structure of pest and non-pest trees is a multi-peak curve,the proportion of largediameter tree in pests is high.Among the nearest 4 adjacent tree of pests,the largest proportion was two insect-infested tree and three insect-infested tree,accounting for 62.1%of the total.In the bivariate distribution characteristics of the uniform angle index and neighbourhood comparison,the uniform angle index of 0.5 and neighbourhood comparison of 0 accounts for the largest proportion.In the bivariate distribution of pest tree radio and uniform angle index,the pest tree radio of 1 and uniform angle index of 0.5 accounts for the largest proportion.In the bivariate distribution of pest tree radio and neighbourhood comparison,the pest tree radio of 1 and neighbourhood comparison of 0 accounts for the largest proportion.【Conclusion】The distribution of Dendrolimus superans was related to the spatial structure of stand,and the spatial pattern of aggregation can promote the development of Dendrolimus superans pests.The univariate distribution characteristics provides an understanding of the overall characteristics and differences between the pest tree and the nearest 4 trees,and the bivariate distribution of structural parameters provides a more refined

关 键 词：落叶松毛虫 虫害木 一元分布 二元分布 

分 类 号：S750[农业科学—森林经理学]