成都市城区大气气传花粉调查

Investigation of the airborne pollens in urban district of Chengdu

目的调查成都市城区大气气传花粉的种类、数量、季节消长规律。方法采用Durham质量法收集气传花粉,对成都市城区进行为期1年的大气气传花粉调查,并分析其分布规律。结果成都市城区2011年全年均有花粉飘散,呈现出明显的2个高峰:第1个高峰出现在3-6月,占全年花粉总数的72.76%,以松属(29.63%)、胡桃科(18.54%)、蔷薇科(7.97%)为主;第2个高峰出现在9-10月,占全年花粉总数的11.63%,以菊科(4.27%)、藜科(3.17%)、棕榈科(0.89%)为主。结论成都市城区2011年全年共有20个科属的花粉飘散,3-6月和9-10月为花粉飘散高峰期。松属、胡桃科、蔷薇科花粉是最主要的春季优势花粉,菊科、藜科、棕榈科是最主要的秋季优势花粉,胡桃科为成都市城区独有的花粉。

Objective To explore the species ,amounts ,dispersal variation of airborne pollens in urban dis-trict of Chengdu .Methods The investigation was completed in urban district of Chengdu from January 1 ,2011 to December 31 ,2011 .The pollens were collected by Durham gravity method and all kinds of pollens were identified and counted with microscope .Results There were various kinds of airborne pollens in atmosphere of the urban district of Chengdu throughout 2011 .The dispersal variation of airborne pollens leaded to two peaks ,the first peak occurred in March ,April ,May and June .The predominant pollens were Pine L .pollen ,Juglandaceae pollen and Rosaceae pollen .The second peak occurred in September and October ,and the predominant pollen was Com-positae pollen ,Chenopodiaceae pollen and Palmaceae pollen .Conclusion There were 20 species airborne pollens in atmosphere in urban district of Chengdu throughout 2011 .The dispersal variation of airborne pollens leaded to two peaks ,the first peak occurred in March ,April ,May and June ,and the predominant pollens were Pine L .pollen , Juglandaceae pollen and Rosaceae pollen .The second peak occurred in September and October ,and the predomi-nant pollen was Compositae pollen ,Chenopodiaceae pollen and Palmaceae pollen .Juglandaceae pollen is the unique pollen in Chengdu.