小陇山林区钝鞘中脉叶蜂虫口密度与林木混交的相关性  

Correlation between Population Density of Mesoneura truncatatheca and Mingling Degree of Tree Species in Xiaolongshan forest Area

作　　者：魏小虎 牟顺泰 张永晖 莫晶 王根强 WEI Xiao-hu;MU Shun-tai;ZHANG Yong-hui;MO Jing;WANG Gen-qiang(Xiaolongshan Forest Pest Control and Quarantine Station,Tianshui,Gansu 741020)

机构地区：[1]甘肃省小陇山林业有害生物防治检疫站,甘肃天水741020

出　　处：《陕西林业科技》2023年第3期98-103,共6页Shaanxi Forest Science and Technology

摘　　要：在锐齿栎—落叶松林、锐齿栎阔叶混交林、锐齿栎—华山松林、栓皮栎林、栎类阔叶混交林和锐齿栎—油松林等6种不同的林分类型中设置20 m×30 m的标准地,对林木混交指数与钝鞘中脉叶蜂虫口密度的相关性进行了研究,结果表明:在不同林分中的同一种寄主植物上,钝鞘中脉叶蜂的虫口密度随寄主混交度的变化未表现出一致的规律性;在同一林分中的不同种寄主植物上,其虫口密度随寄主混交度的变化也未表现出一致的规律性;如果把同一林分中的多种寄主看作同一种“寄主植物”进行分析,则虫口密度随寄主混交度的变化还未表现出一致的规律性。表明在成虫的活动范围内,钝鞘中脉叶蜂的虫口密度与寄主植物的混交度无相关性。Standard plots of 20 m×30 m were set up in 6 different stand types including oak-larix forest,oak-mixed broad-leaved forest,oak-Pinus armandii mixed forest,Quercus variabilis forest,oak-mixed broad-leaved forest and oak-Pinus tabuliformis forest,and the correlation between the tree species mingling degree and the population density of Mesoneura truncatatheca was studied.The results showed that with the same host plant in different stands,there was no consistent correlations between insect population density and host tree mingling degree.With different species of host plants in the same stand,insect population density also has no consistent relations with host species mingling degree.If multiple host plants in the same stand are regarded as the a whole host and analyzed as“host plants”,insect population density shows no consistent correlations with host mingling degrees either.There was no correlation between insect population density in a range of adults and species mingling degrees of the host plants.

关 键 词：钝鞘中脉叶蜂 虫口密度 林木混交指数 

分 类 号：S758.5[农业科学—森林经理学]