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KMID : 0380119970200010001
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Korean Journal of Ecology
1997 Volume.20 No. 1 p.1 ~ p.8
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Distribution of Taraxacum in the Western Area of Kyonggido, Korea
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Park In-Keun
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Abstract
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This study was conducted to investigate the distributions of the native and introduced dandelions in the western Kyonggido area and to determine the environmental factor in fluencing distribution of dandelions. One hundered and thirty seven study sites were randomly selected along roadsides on urban areas, arable lands, apartment areas and industry regions, and vegetation, dandelion´s seed characters and soil acidity were surveyed. Throughout the areas the introduced dandelions were more widely distributed than the native ones. The native dandelions were scarcely distributed in developed areas and roadsides. The introduced dandelions were dominantly distributed in the new environments where soils were alkalized by the urban development, road pavement, and construction of new building, while the native ones were mostly distributed in the rural area with weakly acid soil. The seed production of the introduced ones were two times more than that of the native ones. The seed of the introduced ones were lighter than that of the native ones. The introduced ones yield seeds more than four times a year. These results suggested the urbanization and the seed characters to be the two dominant factors influencing the distribution of dandelions.
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