摘要
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。
The paper simulated the trajectories of autumn migtation of Nilaparvala lugens (St al) by using the atmospheric transport and dispersion model in the east ofChina. Where 1. 0 km and 1. 5 km trajectories could be generated from the same source, they were assumed to represent the practical migration and traditional calculation height of Nalaparvala lugens(St al). Many differences in direction, speed and distance were shown by the subjects which consequently crossed quite different areas. This paper also analysed the effects of different weather types on them.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1995年第3期60-67,共8页
Journal of Nanjing Agricultural University
基金
国家自然科学基金
中英农业科技合作项目
关键词
褐飞虱
迁飞轨迹
最适温层
天气条件
Nilaparvala lugens (St al)
migration trajectory
maximum wind level
upper boundary of insects migration
optimum temperature layer
weather type
