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一、汉中地区经济林昆虫区系的特点由于汉中地区处于东洋区的最北缘,是古北区向东洋区的过渡地带,这种特殊的地理位置和封闭式的盆地环境,形成该区丰富而独特的昆虫区系。该区经济林昆虫区系有以下特点:(一)森林昆虫以东洋区种类为主依据马世骏教授《中国昆虫地理区别》记述,汉中地区应属于东洋区的江南亚热带稻茶区,而秦岭南坡随海拔高度的上升而逐渐向北区的黄淮温带粮棉区过渡。因此该区的森林昆虫种类南北穿插、东西混交,又具有独特的地理分布类型。在已收集到的经济林害虫名录中,以东洋区种类为主,占树种的87.3%;古北区树种较少,占12.7%。常发性昆虫有吹绵蚧(Jcerya purchasi)、茶
I. Characteristics of Insect Fauna in Hanzhong Region Since Hanzhong is located in the northernmost part of the Toyo Geographical Area, it is a transition zone from the Gubeiku area to the Toyo Geopark. This special geographical location and the enclosed basin environment make it rich Unique insect fauna. According to Professor Ma Shijun’s “Geographical Differentiation of Insects in China”, the Hanzhong area belongs to the southern subtropical tea plantation in Dongyang, while the southern slope of Qinling Altitude of the rising and gradually to the north of the Huanghuai temperate cotton area transition. Therefore, the species of forest insects in the area interspersed north and south, mixed with things, but also has a unique geographical distribution type. In the list of economic forest pests that have been collected, mainly species in the East Ocean area account for 87.3% of the tree species; there are fewer species in the Gubei area, accounting for 12.7%. The common insect is blowing ciliate (Jcerya purchasi), tea