【作者】 翟保平； 张孝羲；

【Author】 Bao-ping Zhai Xiao-xi Zhang (Department of Plant Protection,Nanjing Agricultural University,Nanjing,210014)

【机构】 南京农业大学植保系；

【摘要】 在大气边界层中,风和温度对昆虫的迁飞过程有着最直接的影响,而迁飞种群对风温场也有相当主动的选择能力.昆虫选择在气温最适、风力最大(或接近最大)、风向最佳的高度成层(如在夜间边界层的低空急流中迁飞的昆虫),并通过定向进一步修饰位移方位,从而可最大限度地利用空气动力到达新的栖息地.因此,迁飞昆虫在整个迁飞过程中不完全是被动地随风飘流,而是在一定程度上自主地选择了自己的运行轨迹。这是其生活史中一种高度进化的适应性对策。更多还原

【Abstract】 Migration process of insects can be significantly affected by temperature and wind systems.Migration insects can also actively select the optimum wind and temperature fields and concentrated in a dense layer in the altitude(e.g.layering in LLJ of stable PBL),where there usually are higher temperature,stronger wind speed and better wind direction.In the meantime, they orient to an ecological significant azimuth to modify their displacements.It is clearly shown that some insects seem to have an ability to make the best use of the kinetic energy of the atmosphere to seek and find new habitats.Migrating insects are not simply passive drivers in the air,but skilled pilots or drivers being able to select their routes actively.This is a highly evolved adaptive strategy in their life histories.更多还原