The study of airborne pollen and spores inTaoyuan, Hunan Province of China

摘要

In order to study the airborne pollen and Spores, a circular year airborne Samples werecollected at 10m height above ground from Taoyuan ecological station, which is located in TaoyuanCounty of Hunan Province. The analytical results showed that there are 188 plant families and generain airborne pollen and spores. of them, 102 are xylophyte plants, 68 are herbase plat, and 18are pteridophyta plants. The plant families and genera account for 80% of the local plant families andgenera. Among them, 54 are specific families and genera, Which are peculiar tO tropics andsubtropics. The main pollen and spore families and genera are Pinus. Cunninghamia Juglans,Quercus, Cupressaceae, Urticaceac, and Gleicheniaceae. There are two peak stages of airbornepollen and spore concentration throughout the year. One is the peak stage of xylophyte plants fromMarch to May and the other, herbaceous plants from niddle dekad of August to early October. Themaximum year round value is 850 000 grains/1000m3.air in middle dekad of September and theminimum is 1500 grains/1000m3.air in early December. In the local district, the airbome pollen andSpores which can induce respiratory tract disease in spring are Taxodiaceae, Cupresaseeae, CastrieaCastanopsis, Queme, Juglans, Platycarya, and that can induce disease in autumn are Canabis,Gramineae, and Artmisia.