Abstract

Airborne palynomorphs had been investigated in the Nw Flower Garden City, Taipei suburban one year during 1980 to1981. A total of 14,044pollen grains and fern spores were obtained, including 18.54% fern spores, 4.15% gymnospermous pollen grains, and 77.31% angiospermous pollen grains. 95.97% of palynomorphs were identified. They belong to 56families and more than 100 taxa. The dominant pollen taxa varied seasonally. Pollen grains of Trema orientalis appeared most abundantly in spring; Cyatheaceae spores in summer; Humulus scandens and Miscanthus pollen grains in aurumn; and Morus australis and Villebrunea pedunculata in late winter. The local common species and complicate vegetation in this valley were reflected in the assemblage of airborne palynomorphs. Airbone were strongly localized. The effect of meteorological factors on airbone palynomorphs were varied with differernt taxa. However, in general the rainfall could decisively decrease the pollen content in the air , but other factors impacted on them as a whole.