TITLE	Aeropalynological investigation in Taichung, Taiwan, 1993_1995
AUTHOR	Chih-Hua Tsou Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China Ing-Jen Tseng Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China Rey-Feng Lin Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China Hsin-Yu Hong Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China
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ABSTRACT	The airborne pollen spectrum was investigated in Taichung, Taiwan, in two consecutive years using a 7-day volumetric recording trap. In total, 323,745 pollen grains of seed plants and fern spores were counted, with a mean of pollen concentration of 30.8 grains/m3. In the course of a year, airborne pollen was most abundant in spring and least in summer. In dry days from late March to mid April, the pollen concentration usually remained around 1,000 to 2,000 grains/m3 for two or three hours in the morning. During these two years, the highest hourly pollen value was recorded during 11_12 A.M., on 15 April 1994, with a mean of 5,306.7 grains/m3. The pollen spectrum obtained did not reflect the floristic composition of Taichung city. The important pollen taxa were Broussonetia (66.83%), Casuarina equisetifolia (5.66%), Trema orientalis (5.02%), Poaceae (4.15%), Humulus scandens (2.77%), Alnus (1.99%), Morus (1.38%), Mallotus (1.14%) and Macaranga (1.04%). Most of them are common wild Amentiferae plants in lowland Taiwan. Broussonetia is extremely important for future studies of pollen allergy in Taiwan, not only for the allergenicity of its pollen, but also for the superiority of its pollen productivity and pollen dispersibility.
KEYWORD	Aeropalynology; Broussonetia; Taichung; Taiwan;
ARTICLE INFO	Botanical Bulletin of Academia Sinica, Volume 38 Number 1 January 1997, page 57-62, 6 pages
PUBLISHER	Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China