Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Vegetation Structure and Soil Properties of Hemerocallis hongdoensis Population

홍도원추리(Hemerocallis hongdoensis Makino) 개체군의 식생구조와 토양특성

  • 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.)
  • 황용 (전북대학교 생명과학과) ;
  • 김무열 (전북대학교 생명과학과) ;
  • 송호경 (충남대학교 산림환경자원학과)
  • Received : 2012.10.31
  • Accepted : 2012.12.19
  • Published : 2012.12.31
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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.

본 연구는 홍도원추리개체군을 식물사회학적 방법으로 분류하고, 식생과 환경과의 상관관계를 밝히고자 분포서열법을 사용하여 분석하였다. 홍도원추리개체군은 예덕나무 우점개체군, 산가막살나무 우점개체군, 애기며느리밥풀 우점개체군으로 분류되었다. 홍도원추리 개체군은 주로 한반도 남서해안 도서에 분포하고 해발고는 6~362m의 해안가의 낮은 사면과 섬의 능선의 평균 $36.7^{\circ}$의 경사지에 위치하고 있다. 토양의 이화학적 특성을 분석한 결과 유기물함량은 16.18~21.70%, 전질소함량 0.56~0.97%, 치환성 K $0.42{\sim}0.88cmol^+/kg$, 치환성 Ca $3.38{\sim}5.65cmol^+/kg$, 치환성 Mg $1.12{\sim}2.38cmol^+/kg$, 양이온치환용량 $25.93{\sim}41.45cmol^+/kg$이며, 토양 pH는 4.45~4.86인 것으로 조사되었다. 예덕나무 우점개체군은 사면경사가 급하고 양료 중 CEC와 전질소가 높은 지역에 분포하였고, 애기며느리밥풀 우점개체군은 사면경사가 중간이고 CEC와 전질소의 양료가 중간인 입지에 분포하였다. 그리고 산가막살나무 우점개체군은 사면경사가 완만하고, CEC와 전질소의 양료가 적은 입지에 분포하는 것으로 나타났다. 천연보호구역으로 지정된 홍도에 분포하는 홍도원추리개체군의 생육특성을 파악하고 개발로 인한 훼손으로부터 자생지의 보전을 위한 구체적인 대책 마련이 요구된다.

Keywords

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