Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Environmental and Ecological Characteristics of Habitats of Abelia tyaihyoni Nakai

줄댕강나무 자생지의 환경 및 생태 특성

  • Kim, Kyung-Ah (Department of Biological Sciences, Kangwon National University) ;
  • Jang, Su-Kil (Department of Biological Sciences, Kangwon National University) ;
  • Cheon, Kyeong-Sik (Department of Biological Sciences, Kangwon National University) ;
  • Seo, Won-Bok (Department of Biological Sciences, Kangwon National University) ;
  • Yoo, Ki-Oug (Department of Biological Sciences, Kangwon National University)
  • 김경아 (강원대학교 자연과학대학 생명과학과) ;
  • 장수길 (강원대학교 자연과학대학 생명과학과) ;
  • 천경식 (강원대학교 자연과학대학 생명과학과) ;
  • 서원복 (강원대학교 자연과학대학 생명과학과) ;
  • 유기억 (강원대학교 자연과학대학 생명과학과)
  • Received : 2010.08.11
  • Accepted : 2010.09.10
  • Published : 2010.09.30
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Abstract

This study intended to investigate environmental factors including soil and vegetation in order to understand the environmental and ecological characteristics of four different habitats of Abelia tyaihyoni. These habitats, according to investigations, are mostly located at elevations of 203 m to 297 m with angles of inclination ranging from 9 degrees to 17 degrees. The litter depth of habitats is 2 cm to 5 cm. A total of 113 vascular plant taxa are identified in seven quadrates of the four habitats. The life form of 113 species is H-$D_4$-$R_5$-e type. The importance value of Abelia tyaihyoni is 39.61%, and 4 highly ranked species such as Quercus dentata (6.27%), Spiraea blumei, Spiraea prunifolia for. simpliciflora (4.04%) and Ulmus davidiana var. japonica (3.84%) are considered to be an affinity with Abelia tyaihyoni in their habitats. The dominant species of woody plants in the four habitats are represented as Pinus densiflora (21.22%) and Quercus dentata (16.82%) in the subtree layer (T2), and Carex humilis var. nana (18.95%) and Carex lanceolata (17.63%) in the herbaceous layer (H). The degree of their average species diversity is 1.42, and that of dominance and evenness are 0.07 and 0.86, respectively. The type of soil is sandy loam, clay loam and loam, and the average field capacity of soil is 22.49%. Their average organic matter is 9.39%, soil pH 6.75, and available phosphorus is $1.23 {\mu}g/g$.

본 연구는 줄댕강나무 자생지의 환경과 생태적 특성을 알아보기 위하여 수행되었다. 조사 결과 자생지는 해발 203-297 m의 범위에서 나타났고, 경사는 $9-17^{\circ}$, 그리고 낙엽층의 두께는 2-5 cm로 확인되었다. 식생조사 결과 4개 지역의 7개 방형구 내에 출현한 관속식물은 총 113종류였으며, 생활형은 H-$D_4$-$R_5$-e로 조사되었다. 관목층의 중요치는 줄댕강나무가 39.61%로 가장 높았고, 다음으로는 떡갈나무(6.27%), 산조팝나무와 조팝나무(4.04%), 느릅나무(3.84%) 등의 순으로 나타나 이 종류들이 줄댕강나무와 유사한 환경을 선호하는 것으로 생각된다. 상층 수목은 아교목층에 소나무(21.22%)와 떡갈나무(16.82%)가 우점하였고, 초본층은 가는잎그늘사초(18.95%)와 그늘사초(17.63%)가 높은 출현빈도와 피도를 보였다. 종다양도는 평균 1.42였고, 균등도와 우점도는 각각 0.07과 0.86으로 산출되었다. 토양분석 결과 자생지는 사양토, 점질양토, 양토로 조사되었으며, 포장용 수량은 평균 22.49%, 유기물함량은 9.39%로 나타났다. 또한 pH는 6.75 그리고 유효인산함량은 1.23 mg/g으로 조사되었다.

Keywords

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