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Vegetation Structure and Soil Properties of Hemerocallis hongdoensis Population  

Hwang, Yong (Dept. of Biological Sciences, Chonbuk Nat'l Univ.)
Kim, Mu-Yeol (Dept. of Biological Sciences, Chonbuk Nat'l Univ.)
Song, Ho-Kyung (Dept. of Environment and Forestry Resources, Chungnam Nat'l Univ.)
Publication Information
Korean Journal of Environment and Ecology / v.26, no.6, 2012 , pp. 868-875 More about this Journal
Abstract
This study was carried out to analyze the vegetation properties, soil characteristics and ordination of Hemerocallis hongdoensis population in South Korea. The Hemerocallis hongdoensis population was classified into Mallotus japonicus dominant population, Viburnum wrightii dominant population, Melampyrum setaceum dominant population. Hemerocallis hongdoensis were mainly distributed along the coast of south-western iland of the Korean penninsula and it's population was located at an elevation of 6m to 362m. In the study sites, soil organic matter, total nitrogen, exchangeable potassium, exchangeable calcium, exchangeable magnesium, cation exchange capacity and soil pH were 16.18~21.70%, 0.56~0.97%, 0.42~0.88mg/kg, $3.38{\sim}5.65cmol^+/kg$, $1.12{\sim}2.38cmol^+/kg$, $25.93{\sim}41.45cmol^+/kg$, and 4.45~4.86 respectively. Mallotus japonicus dominant population was found in the steep sloped area that has high percentage of cation exchange capacity and total nitrogen than other populations. Viburnum wrightii dominant population was found gentle sloped area that has low percentage of cation exchange capacity and total nitrogen. Melampyrum setaceum dominant population was found in the medium sloped area that has medium percentage of cation exchange capacity and total nitrogen. Current status of Hemerocallis hongdoensis habitats is very vulnerable with local development constantly threatening the species' survival. Thus, concrete conservation plans to protect natural habitats should be set up as soon as possible.
Keywords
HONGDO; PHYTOSOCIOLOGY; ORDINATION;
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