【摘要】 2004年甘肃省天水市秦州区林业局玉泉观站引进了5种外来树种,分别是:美国杏李(Prunus domestica×P. armeniaca)、美国东部黑核桃(Juglans nigra)、四倍体刺槐(Robinia pseudoacacia Linn.)、树莓(Rubus sp.)和无刺大果沙棘(Hippophae rhamnoides)。为了确定有无外来物种入侵,2006年对玉泉观站外来树种栽植区进行昆虫种类调查,采用手工捕捉结合网捕的方法采集昆虫标本,经鉴定分析共有45种昆虫,其中有害虫31种,分属于5目21科;天敌昆虫14种,分属于5目11科,种类最多的是鞘翅目昆虫,分别占害虫总数和天敌昆虫总数的35.5%和35.7%。45种昆虫均为当地种,说明引进外来树种没有造成外来物种入侵。更多还原

【Abstract】 Five exotic tree species,Prunus domestica×P.armeniaca,Juglans nigra,Robinia pseudoacacia Linn.,Rubus sp.and Hippophae rhamnoides,were introduced intoYuquan′guan Station in Tianshui city of Gansu province in 2004.To ascertain whether there were alien insect pest invading along with the tree species,an investigation on insects was carried out in the region of exotic tree species of Yuquan′guan Station in Tianshui city in 2006.The results showed that there were 45 species in which there were 31 species of destructive insects belonging to 21 families of 5 orders,and 14 species of natural enemies which belong to 11 families 5 orders.Among the 45 species,the most species belonged to Coleoptera,which accounting for 35.3% of the 31 kinds of destructive insects and 35.7% of the 14 kinds of natural enemies.They were all the local species,that is,there weren’t alien species invading with exotic tree species.更多还原