Wang Cuihua, Bao Yunxuan, Wang Jianqiang, Zhai Baoping, Xiang Yong
Key Laboratory of Monitoring and Management of Plant Diseases and Insects of Agriculture Ministry, Nanjing Agricultural University, China.
Ying Yong Sheng Tai Xue Bao. 2006 Sep;17(9):1693-8.
To reveal the influence of atmospheric water vapor conditions on the outbreak of Cnaphalocrocis medinalis in 2003, the geographic distributions of the pest per 667 m2 of China on June 16th, July 21st, and September 1st, 2003 were analyzed under the support of ArcGIS, and the air relative humidity and water vapor flux fields on 850, 925 and 1000 hPa that had the greatest influence on the pest immigration were selected to do simulation and objective analysis. The results showed that the transferring status of water vapor and the distribution of relative humidity on the upper air had significant indicative meanings for the immigration. In the regions of C. medinalis outbreak, the air relative humidity on each layer from the ground to 850 hPa was higher than 50%. The shorter the distance to the landing region of C. medinalis, the higher the humidity was, while the shorter the distance to the taking-off region, the lower this humidity was. 850 hPa was the main layer of water vapor transferring during C. medinalis migration, and the key pathway of the migration. On this height, the direction of water vapor transferring was basically concurrent with that of C. medinalis migration.
为揭示大气水汽条件对2003年稻纵卷叶螟暴发的影响，在ArcGIS支持下，分析了2003年6月16日、7月21日和9月1日中国每667平方米该害虫的地理分布，并选取对害虫迁飞影响最大的850、925和1000百帕的空气相对湿度和水汽通量场进行模拟和客观分析。结果表明，水汽输送状况和高空相对湿度分布对迁飞具有显著指示意义。在稻纵卷叶螟暴发区域，地面至850百帕各层的空气相对湿度均高于50%。距离稻纵卷叶螟降落区域越近，湿度越高；而距离起飞区域越近，湿度越低。850百帕是稻纵卷叶螟迁飞过程中水汽输送的主要层次和迁飞的关键路径。在此高度上，水汽输送方向与稻纵卷叶螟迁飞方向基本一致。
