小麦条锈病原孢子远距离传输数值模拟

应用HYSPLIT-4模式对2002年4月15日入侵河南省境内的条锈病原孢子进行远距离输送模拟,结果显示此次入侵河南部分县市的条锈病菌来源并非单一,主要包括西北方向的甘-陕-晋线和西南方向的贵-渝-鄂线,孢子传输主要在低压稳定气流中进行.此次入侵影响范围还包括甘肃东南部、四川东部、湖北北部、陕西南部和山西大部,其中西北方向来源的孢子质量浓度和影响区域范围要大于西南方向.

Numerical simulation of the long distance atmospheric transport of wheat stripe orust spores: a case study

The HYSPLIT-4 modeling system was used to simulate the long distance atmospheric transport of wheat stripe rust spores that reached Henan Province on April 15, 2002. The case study demonstrated that the source area of the spores was not unique, but included the Gansu-Shaanxi-Shanxi region in the northwest direction and Guizhou-Chongqing-Hubei region in southwest direction. The spores were primarily transported in stable conditions associated with the passage of a low-pressure system. The spore infested areas also covered regions to the southeast of Gansu, east of Sichuan, north of Hubei, south of Shaanxi and most parts of Shanxi. The mass concentration of spores in the infested areas that were transported from the northwest direction was greater than those that came from southwest direction.