北京地区秋季气传花粉浓度调查

Monitoring of Concentration of Airborne Pollen with Burkard Sampler in Autumn,2007 in Beijing

目的了解北京地区秋季气传致敏花粉的浓度及昼夜分布规律。方法应用Burkard采样仪于2007年8月1日至10月20日对北京地区气传花粉进行连续监测,应用光学显微镜进行花粉种属鉴别,并进行时段浓度计算。结果北京地区秋季气传花粉主要由大麻葎草属、蒿属花粉构成,其构成比分别为51%,31%。在花粉季节主要致敏花粉日平均浓度分别为,大麻葎草属124粒/m3,蒿属花粉71粒/m3,两种花粉的最高浓度分别为672和267粒/m3。两种花粉在14:00—16:00浓度均明显高于6:00—8:00,差异有统计学意义(P<0.05)。结论大麻葎草属花粉是北京地区最主要的秋季气传致敏花粉。

Objective The aim of this study was to understand the pollen concentration and the daily variation during 2007 in Beijing by monitoring. Methods Burkard volumetric strap was used for the pollen sampling from August 1st to October 20th. Genus of pollen was identified by light microscope. Results Artemisia and Humulus.L pollen were the dominant airborne pollen in late summer and autumn in Beijing City. The average pollen concentration of Artemisia and Humulus.L were 71 grain/m3, 124 grain/m3. Both of them lasted from the August 8th until October 6th or 8th. Statistical analysis showed that the pollen concentration of Artemisia or Humulus. L at 2：00 pm to 4：00 pm was higher than that at 6：00 am to 8：00 am. Conclusion It is the first work to conduct the monitoring of the concentration of Artemisia and Humulus.L pollen with Burkard sampler in Beijing. Humulus. L is the dominant airborne pollen during August and September.