PJB-2018-520
ANALYSIS OF AIRBORNE POLLEN GRAINS IN BEIJING, CHINA
XINCI CUI
Abstract
In this study, we investigated the airborne pollen grains for the years 2003 and 2004 in Beijing, China using the Cour device. The results showed that the average annual pollen grain concentration was around 11579/cm2. Among them, the pollen grains of woody plants and herbaceous plants accounted for 48.4% and 43.6%, respectively. In addition, the temporal distribution of annual airborne pollen grains showed two peaks: the first peak appeared in the spring months (April and May) and mainly composed of woody plant pollen, while the second peak appeared in late summer and early autumn months (August and September) and were mainly composed of pollen of herbaceous plants. The main types of airborne pollen identified in decreasing order of abundance were Artemisia (16.1%), Betulaceae (15.3%), Amaranthaceae/Chenopodiaceae (9.5%), Convolvulaceae (7.7%), Pinaceae (7.2%), Fabaceae (5.7%), Oleaceae (3.5%), Poaceae (3.0%), Salicaceae (3.0%), Ailanthus (2.6%), Rosaceae (2.3%), Juglandaceae (1.9%), Lamiaceae (1.5%), Plantago (1.5%), Humulus (1.4%), Scrophulariaceae (1.3%), Urticaceae (0.9%), Apocynaceae (0.6%), and Ulmus (0.6%). In addition, the 2003–2004 pollen calendar was made based on the average weekly pollen concentration of the main pollen types.
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