摘要
借鉴动物栖息地评价方法,综合虫口密度、有虫株率、虫体长度3项因子,对八达岭林场夏季主要害虫进行危害等级综合评价。结果表明,八达岭地区夏季危害较为严重的昆虫是蚜科(Aphididae)和球蚜科(Adelgi-dae);危害最轻的是蚜科(Aphididae)和粉虱科(Aleyrodidae),并分析了其中的原因。
The animals＇ habitat evaluation method is used in this study. Three factors are integrated, regarding population density of insect, ratio of harmed trees and the length of insect to value the damage grade of main pests in Badaling Forestry Center in summer. The result shows that the more serious insects in Badaling Forestry Center in Summer are Aphididae and Adelgidae ; the light harmed insects are Aphididae and Aleyrodidae. And it＇ s reasons are analyzed.
出处
《林业调查规划》
2006年第2期112-115,共4页
Forest Inventory and Planning
关键词
危害等级
综合评价
有害昆虫
八达岭林场
damage grade
integrated evaluation
pests
Badaling forestry Center
