An investigation of airborne pollen in Taipei city, Taiwan, 1993–1994 |
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Authors: | Yueh-Lin Yang Su-Hwa Chen |
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Institution: | (1) Department of Botany, National Taiwan University, Taipei, Taiwan |
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Abstract: | A two-year aeropalynological study performed during January 14, 1993 to December 31, 1994 in Taipei City revealed 154 different
pollen taxa, with the most frequent beingBroussonetia (31.3%),Trema (15%),Bischofia (6.9%),Mallotus (6.8%),Cyathea (3.8%),Morus (3.7%),Fraxinus (2.9%) and Gramineae (2.8%), respectively. Two quantitative peaks of pollen grains appeared in March and in September in
1993, but only one peak in 1994. The dominant pollen taxa during these two peaks wereBroussonetia andMallotus. The heavy rain in February 1994 seemed to have delayed the first pollen peak to April, butBroussonetia was still the most frequent taxon. After July 1994, six typhoons brought heavy precipitation to northern Taiwan. Different
weather types might have an effect on the concentration of airborne pollen grains, so that the timing of quantitative peaks
was different in the two studied years. Arboreal pollen (AP), non-arboreal pollen (NAP) and fern spores (FS) constituted 81.7%,
7.7% and 7.8% of the two-year sum, respectively. AP dominated from January to June, NAP in November and fern spores in July.
Native species in the Taipei Basin and trees along urban roadsides were the common sources of airborne pollen. The pollen
calendar of two years in Taipei City was submitted. |
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Keywords: | Airborne pollen Arboreal pollen Fern spore Non-arboreal pollen Pollen calendar Taipei |
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