青甘边区黑河流域森林植被带及其昆虫区系的组成

Compositions of Forest Vegetation and Insect Fauna in Heihe River Basin Covering Border Area of Qinghai and Gansu Provinces.

黑河发源于青海、甘肃交界的祁连山区,是甘肃河西走廊最大的内陆河水系之一,水源丰富,流量稳定,这不仅取决于祁连山区大气降水和冰川融水,更重要的是与上游森林植被密不可分。但是,由于森林害虫猖獗成灾,严重威胁着这一地域森林的生存。近几年我们在森林昆虫普查的基础上。

The vegetations in Heihe River basin are divided into five zones:grassland desert zone, mountain grassland zone,mountain forest grassland zone,subalpine scrubby grassland zone and sparse alpine subcryophyte zone.Forest insects in this basin belong to 136 species,50 families and 6 orders.Occurrence features of main forest insect pests and their rampant causes are analyzed and measures for their control are put forward.