臺北近郊（花園新城）空中孢粉之研究

Abstract

1980年至1981年間於花園新城進行空中孢粉調查。一整年共得花粉及蕨類孢子14045粒，其中孢子占18。54%，裸子植物花粉占4.15%,被子植物花粉占77.31%。鑑定部份(95.57%)分隸於57科，100個以上的分類群。 數量上占優勢之花粉散見於四季中，在春季為山黃麻（Trema orientalis）之花粉，夏季為桫橇科(Cyatheaceae)之孢子，秋季為葎草(Humulus scandens)及芒屬(Miscanthus)之花粉，冬季則以小葉桑(Morus australis)及長梗紫麻(Villebrunea pedunculata)之花粉為主。 孢粉相中反映了當地複雜的植被和溪谷型的常見植群。顯示孢粉多屬短距離散佈且跑粉相見強烈之地域性。氣候因數對各種花粉之影響力不一，大體而言，降雨具有決定性減少花粉量的作用，其他氣候因數則係綜合性地影響。

Airborne palynomorphs had been investigated in the New Flower Garden City, Taipei suburban one year during 1980 to 1981. A total of 14045 pollen grains and fern spores were obtained, including 18.54% fern spores, 4.15% gymnospermous pollen grains, and 77.31% angiospermous pollen grains. 95.75% of palynomorphs were identified. They belong to 57 families 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 autumn; and Morus australis and Vi1lebrunea pedunculata in winter. The local common species and complicate vegetation in this valley were reflected in the assemblage of airborne palynomorphs. Airborne palynomorphs were mostly of short distance dispersion, and their spectra were strongly localized. The effects of meteorological factors on airborne palynomorphs were varied with species. However, in general, the rainfall could decrease the pollen content in the air definitely, but other factors impacted on them as a whole.