Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Vegetation Structure of Hongdo Island

홍도의 식생구조

  • Lee, Ji-Hye (Hanbat Arboretum) ;
  • Do, Mi-Sol (Graduate School, Dept. of Forestry Resources, Chungnam Nat'l Univ.) ;
  • Song, Ho-Kyung (Dept. of Environment & Forestry Resources, Chungnam Nat'l Univ.)
  • 이지혜 (한밭수목원) ;
  • 도미솔 (충남대학교 대학원 산림자원학과) ;
  • 송호경 (충남대학교 산림환경자원학과)
  • Received : 2013.08.20
  • Accepted : 2013.10.31
  • Published : 2013.10.31
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Abstract

This study was carried out to analyze the vegetation properties, soil characteristic, and ordination of forest in Hongdo island and the results are as follows: Castanopsis cuspidata var. sieboldii community, Quercus acuta community, Machilus thunbergii community, Pinus densiflora community and Carpinus coreana community. The results of importance value on the vegetation of Hongdo island consisted of the following in order: 75.56% of Castanopsis cuspidata var. sieboldii, the highest, 34.84% of Pinus densiflora, 29.11% of Machilus thunbergii, 26.88% of Camellia japonica, 17.79% of Quercus acuta, 15.23% of Dendropanax morbifera, 13.41% of Ligustrum japonicum, 12.67% of Carpinus coreana. Due to the high organic matter, total nitrogen and low pH, the soil properties of Hongdo island are different from those of other forest in Korea. The composition of soil properties in the same areas are as follows: organic matter, total nitrogen, available phosphorous, exchangeable $K^+$, exchangeable $Ca^{2+}$, exchangeable $Mg^{2+}$ contained, and soil pH. The capacities of these chemical properties of the soil ranged from 14.48~25.45%, 0.49~0.90%, 26.00~58.68 mg/kg, $0.64{\sim}1.64cmol^+/kg$, $6.22{\sim}21.5cmol^+/kg$, $2.92{\sim}6.95cmol^+/kg$, and 4.42~5.44 respectively. The results of the correlation between communities and soil conditions of vegetation of Hongdo island by DCCA ordination method are as follows: Castanopsis cuspidata var. sieboldii community was found in the highest soil moisture and followed in order Machilus thunbergii community, Quercus acuta community. The Machilus thunbergii community was found in the highest pH, exchangeable $Ca^{2+}$, exchangeable $Mg^{2+}$, exchangeable $K^+$ and cation exchange capacity. The Carpinus coreana community was found in the highest elevation, total nitrogen, cation exchange capacity, exchangeable $Mg^{2+}$ and followed in order Pinus densiflora community.

본 연구는 홍도의 식생구조를 식물사회학적 방법으로 군락을 분류하고, 식생과 토양과의 상관관계를 밝히고자 구배분석을 실시하였다. 홍도의 식생은 구실잣밤나무군락, 붉가시나무군락, 후박나무군락, 소나무군락, 소사나무군락으로 구분되었다. 중요치 분석결과 구실잣밤나무가 75.56%로 가장 높았으며, 소나무 34.84%, 후박나무 29.11%, 동백나무 26.88%, 붉가시나무 17.79%, 황칠나무 15.23%, 광나무 13.41%, 소사나무 12.67% 등의 순으로 나타났다. 토양은 매우 높은 유기물과 질소함량을 보이며 표토층에서 강한 산성토양의 특성을 나타내어 우리나라의 일반 산림토양과는 다른 특성을 가지고 있었다. 유기물함량 14.48~25.45%, 전질소함량 0.49~0.90%, 유효인산함량 26.00~58.68mg/kg, 치환성양이온 $K^+$는 $0.64{\sim}1.64cmol^+/kg$, $Ca^{2+}$는 $6.22{\sim}21.51cmol^+/kg$, $Mg^{2+}$는 $2.92{\sim}6.95cmol^+/kg$, 토양 pH는 4.42~5.44인 것으로 조사되었다. DCCA를 이용한 홍도의 식생과 환경요인과의 상관관계를 분석한 결과, 구실잣밤나무 군락이 수분이 가장 많은 곳에 분포하였고, 후박나무군락, 붉가시나무군락 순으로 분포하였다. 후박나무군락이 pH, 치환성양이온 $Ca^{2+}$, $Mg^{2+}$, $K^+$, 양이온치환용량 등이 가장 높은 지역에 분포하였다. 소사나무군락이 소나무군락에 비해 해발고, 전질소, 양이온치환용량, 치환성양이온 $Mg^{2+}$ 등이 높은 지역에 분포하였다.

Keywords

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