Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Environmental Characteristics of Wedelia prostrata Hemsl. Habitats in Jeju-do

제주도 갯금불초(Wedelia prostrata Hemsl.) 자생지의 환경특성

  • Kim, Kyung-Ah (Dept. of Biological Sciences, Kangwon National University) ;
  • Han, Jun-Soo (Dept. of Biological Sciences, Kangwon National University) ;
  • Cheon, Kyeong-Sik (Dept. of Biological Sciences, Kangwon National University) ;
  • Yoo, Ki-Oug (Dept. of Biological Sciences, Kangwon National University)
  • Received : 2012.10.24
  • Accepted : 2013.02.26
  • Published : 2013.02.28
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Abstract

The habitats characteristics of Wedelia prostrata were investigated to compile basic data for conservation and restoration. Natural habitats were located at inclinations of $1-40^{\circ}$. Thirty eight vascular plants were identified from 19 quadrats in 7 habitats. The importance value of Wedelia prostrata is 44.77% and 5 highly ranked species such as Vitex rotundifolia(13.32%), Carex pumila(6.75%), Calystegia soldnella(4.24%), Aster hispidus(2.54%) and Artemisa capillaris(2.43%) are considered to be an affinity with Wedelia prostrata in their habitats. Species diversity was 0.79, and dominance and evenness were found to be 0.25 and 0.67, respectively. Average field capacity was 4.51%, the organic matter was 3.37%, pH was 8.17, available phosphorus was $1.33{\mu}g/g$, and electrical conductivity was $802.01{\mu}s/cm$.

본 연구는 산림청의 희귀식물 중 취약종으로 구분되어 있으며 제주도에만 제한적으로 분포하는 갯금불초의 자생지 환경을 조사하여 보전 및 복원 시 기초자료를 제공하고자 하였다. 조사결과 갯금불초의 자생지는 경사 $1-40^{\circ}$의 해안사구에 위치하고 있었으며, 대부분 전사구를 중심으로 띠모양의 군락을 형성하고 있었다. 식생분석결과 7개 지역의 19개 방형구 내에서 조사된 관속식물은 총 38분류군이었다. 중요치는 갯금불초가 44.77%로 가장 높았으며, 다음으로는 순비기나무(13.32%), 좀보리사초(6.75%), 갯메꽃(4.24%), 갯쑥부쟁이(2.54%), 사철쑥(2.43%) 등이 높은 값을 보여 이 분류군들이 갯금불초와 친화도가 높은 것으로 판단된다. 종다양도는 평균 0.79로 산출되었으며, 우점도와 균등도는 각각 0.25와 0.67이었다. 토양분석결과 포장용수량은 4.51%, 유기물함량은 3.37%, pH는 8.17, 유효인산함량은 $1.33{\mu}g/g$, 그리고 전기전도도는 $802.01{\mu}s/cm$로 측정되었다.

Keywords

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