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借鉴现代统计──天气理论中的大气传输与扩取模型,对褐飞虱秋季回迁的轨迹进行模拟,计算了回迁昆虫在高空1000m(实际飞行高度)和1500m(以往传统的计算高度)的迁飞轨迹,通过对比分析,发现两高度的轨迹在迁飞方向、迁飞速度和迁飞距离上均存在着较大的差异;通过对迁飞风场和迁飞温度场的分析,进一步证实了1000m高度的迁飞轨进模拟能够更直接、更准确地反映出昆虫迁飞的实际情况;同时对导致1000m和1500m两高度轨迹差异的背景环流进行了归类,定性地分析了不同天气系统对两高度迁飞轨迹方位角差、迁飞速率差的影响。
Using the modern statistics-atmospheric transmission and expansion model in the weather theory, the trajectory of the brownbacked planthoppers in autumn is simulated and the migration trajectories of migratory insects at 1000m altitude (the actual altitude) and 1500m (the conventional calculated altitude) Through the comparative analysis, it is found that the trajectories of the two altitudes have great differences in the direction of migration, the velocity of migration and the distance of migration; the analysis of the temperature of the migration wind field and the migration temperature field further confirms that the height of 1000m The simulation of migration trajectory can reflect the actual situation of insect migration more directly and accurately. At the same time, the background circulation which leads to the difference of two trajectories of 1000m and 1500m is classified, and the effects of different weather systems on the height The impact of migration trajectory azimuth difference, the difference between the rate of migration.