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KMID : 0380119820050010034
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Korean Journal of Ecology
1982 Volume.5 No. 1 p.34 ~ p.45
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An Ecological Study on the Vegetation of Dumi Island
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Abstract
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The purpose of this research is to investigate the flora of Dumi Island. This island locates at 128˚13´E. longitude and 34˚41´N. latitude. As a result of our investigation, the distribution of plants on Dumi Island could be summarized as follows.
The vascular plants through this investigation were 66 families, 121 genera, 127 species, 16 varieties, 2 forma, and 145 kinds. From 1945 to 1960, most Pinus densiflora and Quercus mongolica were cut and sent as fuel to the cities of Masan, Chungmu and Samchunpo. After these deforestation years, there was a change of policy in the area and then wood was substituted by coal blacks as fuel and along with this occurs reforestation. Because of the reforestation by the present administration and natural means of succession. Pinus thunbergii became the dominant pine on the island. In the case of ever-green broad leaved trees, Castanopsis cuspidata var. thunbergii, Camellia japonica and Machilus japonica: they were found to exist near Sheonangdang in the northern region at Hakli and at Kuchun in the south. In the central part of the island at Mt. Chunhwang there are slopes of 20-30 degrees which are cultivated by the islanders mostly with Zoa mays (corn) and Ipomaea botatas (sweet potato). There are only 128 hectors of land on this mounstain which can be cultivated and 65% or 830 islanders are farming this land. Although this 125.4 hectors is not a large portion, this mountain with its variety of growth at different evevations, seems to be very fertile causing thick growth at any level.
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