中文摘要：

通过对1991-2005年中国褐飞虱灯诱资料和登陆台风数据的调研，分析了台风对褐飞虱灾变性迁入的影响。研究发现：这15a中共有52个台风登陆我国东部稻区，其中16个台风对褐飞虱的迁入带来了重大影响。台风对褐飞虱迁入影响最大的是2005年，其次是1991年和1997年。在2005年登陆我国的9个台风中有6个台风对我国褐飞虱迁入产生了重大影响，其中对夏季迁飞影响最大的是海棠台风。本文选取海棠台风作为研究个例，将这一个例的虫情数据导入GIS中进行降落特征的空间分析，再结合相关气象资料对台风登陆期间的大气动力背景进行了客观分析，通过分析初步揭示了风场、垂直流场和降水在褐飞虱降落过程中的作用。

英文摘要：

In order to ascertain typhoon＇s dynamical mechanisms on the catastrophic immigrations of Nilaparvata lugens （st 1）, based on the investigation of BPH＇s lighting catches and the landing typhoons data in China from 1991 to 2005, in this paper, the influence of the typhoon weather systems and the typhoon weather processes on the catastrophic immigration of BPH＇s populations were analyzed. The analysis displayed that there were 52 typhoons landed on the main growing-rice areas of the eastern China in these years. Among them, 16 typhoons have brought remarkable influence into the catastrophic immigration processes of populations. The greatest effect on BPH＇s immigration appeared in 2005,and the effect took second place in 1991 and 1997. By the above systematic analysis, a catastrophic immigration northward event of BPH＇s populations caused by the landed typhoons in 2005 was selected. The lighting catches of BPH during this event was induced into GIS and the spatial characteristics of BPH＇s immigrating populations were analyzed. At last, the atmospheric dynamical backgrounds during the BPH＇s immigrations combined with the weather data of the typhoons landing periods were discussed objectively. The dynamical effects of typhoons on this BPH＇s immigration process was explored briefly.