不同混交林分中白蜡窄吉丁幼虫空间格局分析  

Spatial distribution of Agrilus planipennis larvae in different mixed forests

作　　者：张倩倩 左爽 张刚 李玺锋 王华玲 李会平[1,3] ZHANG Qianqian;ZUO Shuang;ZHANG Gang;LI Xifeng;WANG Hualing;LI Huiping(College of Forestry,Hebei Agricultural University,Baoding 071001,China;Beijing Tongzhou Lucheng Collective Forest Farm,Tongzhou 101100,China;City Forest Health Technology Innovation Center of Hebei,Baoding 071001,China)

机构地区：[1]河北农业大学林学院,河北保定071001 [2]北京通州潞城集体林场,北京通州101100 [3]河北城市森林健康技术创新中心,河北保定071001

出　　处：《中国森林病虫》2025年第2期41-47,共7页Forest Pest and Disease

基　　金：Dimensions合作研究项目“伴生微生物在入侵害虫(白蜡窄吉丁和红脂大小蠹)入侵成灾过程中的作用机制”(32061123002)。

摘　　要：为有效控制我国重要蛀干害虫白蜡窄吉丁Agrilus planipennis危害,运用地统计学方法研究北京市通州区潞城镇潞城集体林场内3种方式混交林分内白蜡窄吉丁幼虫的空间分布格局。结果表明:在垂直方向上树干高度1~2 m处的虫口密度显著多于树干高度<1 m及>2 m处(P<0.01);西方位的虫口密度显著高于东、南、北方位(P<0.01);在水平方向上基于不同混交林虫口密度建立的空间模型分别为线性模型(株间混交)、球状模型(行带混交)与指数模型(块状混交),白蜡窄吉丁幼虫在株间混交林内的空间分布格局为随机分布,在带状混交林与块状混交林内为聚集分布;Kriging插值法分析显示,与行带混交林和块状混交林相比,株间混交林内发生虫害的可能性小,幼虫数量由聚集中心向周围逐渐减少;行带混交与块状混交受害林中白蜡窄吉丁幼虫空间分布存在明显的边缘效应,虫害的发生呈空间聚集性。可根据聚集点与扩散方向防治白蜡窄吉丁幼虫。To effectively manage the damage of the major trunk borer Agrilus planipennis,geostatistical methods were used to analyze the spatial distribution pattern of A.planipennis larvae in three types of mixed forests in Collective Forest Farm in Lucheng town,Tongzhou district,Beijing.The results showed that number of A.planipennis adult exit holes at 1-2 m high of the trunk height in the vertical direction was significantly higher than those below 1 m and above 2 m(P<0.01).In the horizontal direction,number of larvae in the western direction was significantly higher than that in the eastern,southern,and northern directions(P<0.01).The spatial models established for different mixed forests in the horizontal directions,including linear model(interplant mixed forest),spherical models(strip mixed forest),and exponential model(block mixed forest).The spatial distribution of A.planipennis larvae was random in interplant mixed forests and aggregated in strip or block mixed forests.Kriging interpolation analysis indicated that interplant mixed forests had a lower likelihood of pest infestations compared to strip or block mixed forests.The larvae population gradually diminishes from the central aggregation points towards the surrounding regions.Strip mixed forests and block mixed forests damaged by A.planipennis,exhibited a notable edge effect,with pest occurrences demonstrating a pattern of spatial aggregation.Prevention and control measures for A.planipennis larvae could be implemented based on these aggregation points and dispersal directions.

关 键 词：白蜡窄吉丁 空间分布 地统计学 白蜡混交林 

分 类 号：S763.303[农业科学—森林保护学]