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http://dx.doi.org/10.14578/jkfs.2020.109.2.145

Changes Over Time in the Community Structure and Spatial Distribution of Forest Vegetation on Mt. Yeompo, Ulsan City, South Korea  

Oh, Jeong-Hak (Urban Forests Research Center, National Institute of Forest Science)
Kim, Jun-Soo (Nature and Forest Research Institute)
Cho, Hyun-Je (Nature and Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.109, no.2, 2020 , pp. 145-156 More about this Journal
Abstract
In 2000 and 2018, phytosociological surveys were carried out in the forest vegetation of Mt. Yeompo, a representative isolated urban forest in Ulsan city. The trends of change in forest structure, composition, and spatial distribution were compared between years. Total percent coverage per 100 squaremeters of forest vegetation was similar, but natural vegetation showed a 9% increase. The importance of constituent species changed slightly. Specifically, Lindera erythrocarpa and Styrax japonicus showed very high growth rates of 835% and 269%, respectively. Species richness (S) and diversity (H') decreased by about 22% and 8%, respectively. Both S and H' showed slightly higher rates of decrease in artificial compared with natural vegetation. The constituent species life form spectrums were the same in 2000 and 2018 as 'MM-R5-D4-e'. The similarity (Jaccard coefficient) in the species composition of the forest vegetation was almost homogeneous at approximately 75%. The number of indicator species decreased from 16 species in 2000 to 7 species in 2018. This decrease was mostly due to a decline in herbaceous plants, such as Hemicryptophytes, Geophytes, and Therophytes, which are sensitive to disturbances. The spatial distribution of forest vegetation did not change significantly. The number of forest landscape elements (patches) increased by approximately 25% from 537 in 2000 to 721 in 2018, while the average size decreased by about 20% from 1.28 ha in 2000 to 1.03 ha in 2018.
Keywords
isolated urban forest; forest vegetation; phytosociological survey; vegetation community type; spatial distribution;
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Times Cited By KSCI : 2  (Citation Analysis)
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