“三江源”隆务河流域天然林区小蠹区系初步研究

Bark beetle fauna in the natural forests in Longwu River Valley of "Three River Sources" Area

青海省"三江源"区隆务河流域天然林区有小蠹虫19种,危害青海云杉、紫果云杉、油松、祁连圆柏和桦树,以中亚细亚种占优势。小蠹种群的动态变化受气温、立地条件、林木生长势、林分卫生状况等因子的影响。以提高经营管理措施和信息素等生物防治为主,适时进行化学触杀剂防治为辅的方法是控制小蠹种群危害的较好途径。

There were 19 species of bark beetles in the natural forests in Longwu Valley of Qinghai Province, attacking Picea crassifolis , P. purpurea , Sabina przewalskii and Pinus Tabulaeformis Among them the central Asian species were the dominants. The dynamic variation of bark beetle populations was influenced by factors such as climate, site conditions, tree growth potential and forest sanitation conditions. The better way for the control of the pests was to take the measures of forest management, pheromone attractant and use contact insecticide appropriately.