“海棠”台风气流场对褐飞虱北迁路径的影响  

Effects of typhoon 'Haitang' airflow field on the northward migration route of rice brown planthopper

作　　者：王翠花[1] 翟保平[1] 包云轩[2] 

机构地区：[1]南京农业大学农业部病虫监测与治理重点开放实验室,南京210095 [2]南京信息工程大学应用气象学院,南京210014

出　　处：《应用生态学报》2009年第10期2506-2512,共7页Chinese Journal of Applied Ecology

基　　金：国家重点基础研究发展规划项目(2006CB102007);国家"十一五"科技支撑计划项目(2006BAD08A01)资助

摘　　要：基于GIS、GrADS软件和HYSPLIT-4.8轨迹模式,分析了0505号台风"海棠"发生期间(2005年7月19—21日)中国10个省42个虫情观测点的逐日灯诱褐飞虱虫量、850hPa等压面的风场和20个虫情监测点的褐飞虱迁飞轨迹.结果表明:台风"海棠"登陆中国后,改变了引导褐飞虱向北迁飞的西南气流,造成风场在台风西南部的辐合和大范围的转向,阻止了褐飞虱的向北迁飞,迫使其在某些区域集中迫降;850hPa等压面上切变线附近是褐飞虱集中降落的区域;在台风衰亡时期,台风东南部气流暖式切变区是大量降虫的区域;台风整体登陆后,西南气流的再次建立,造成褐飞虱的大量北迁.Based on GIS, GRADS, and HYSPLIT-4. 8 model, this paper analyzed the dally light-trap catches of rice brown planthopper at 42 pest monitoring stations of 10 provinces in China, the wind field on 850 hPa isobaric surface, and the migration tracks of rice brown planthopper at 20 pest monitoring stations during the occurrence of 0505 typhoon‘Haitang＇ from 19th to 21st July, 2005. After its landing on China, the typhoon ‘Haitang＇ changed the southwest air flow, a flow which leads the northward migration of rice brown planthopper, and made the wind field converge in the southwest of the typhoon and swerve in larger areas. Accordingly, the northward migration of the rice brown planthopper was stopped, and the airborne populations were forced to descend in some areas. The shear line area nearby 850 hPa isobaric surface was the concentration and deposition area of the rice brown planthopper. There would be a mass migration area in the warm airflow shear area in the southeast of typhoon during the collapse of the typhoon. After the whole typhoon landed, the southwest airflow rebuilt, and a mass rice brown planthopper migrated to the north.

关 键 词：台风 褐飞虱 风场 切变线 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]