Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Distribution of naturalized plants in historic sites and urban park of Gyeongju-si, South Korea

경주시 주요 사적지 및 도시공원의 귀화식물 분포

  • Song, Imgeun (Department of Life Sciences, Yeungnam University) ;
  • Park, Seonjoo (Department of Life Sciences, Yeungnam University)
  • Received : 2019.03.30
  • Accepted : 2019.05.13
  • Published : 2019.06.30
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Abstract

The flora of naturalized plants in historic sites, urban parks and stream of Gyeongju-si, South Korea were summarized as 84 taxa including 21 families, 59 genera, 78 species, 1 subspecies, and 5 varieties. Direct investigation was conducted in a historic site with 68 taxa, a neighborhood park with 43 taxa, a stream with 59 taxa and a small park with 42 taxa at 86 sites. Among them, 31.0% (Naturalized Degree (ND) 3) was common but not abundant, 29.8% (ND 5) was common and an abundant plant, 20.2% (ND 2) was local and not an abundant plant. 7 taxa such as Lactuca scariola, Symphyotrichum pilosum, Rumex acetosella were invasive alien species. Lactuca scariola was the most abundant with 41.9%, Symphyotrichum pilosum was more abundant around stream with 34.9%, and Rumex acetosella was abundant on historic sites or small park with 25.6% in all the surveyed sites. To prevent spread of invasive alien species, monitoring may be required, especially, in early settlement stage. A proper management plan needs to be incorporated through physical removal of those plants, substitution of soil and so on.

경주시 사적지, 도시공원지역, 그리고 하천 86개소의 현지조사를 통하여 귀화식물을 조사한 결과 21과 59속 78종 1아종 5변종으로 총 84분류군으로 조사되었다. 이중 사적지는 68분류군, 근린공원 43분류군, 하천 59분류군, 소공원 42분류군 등으로 나타났다. 출현식물 중 널리 분포하나 개체수는 많지 않은 귀화도 3등급 분류군이 31.0%, 널리 분포하고 개체수도 많은 5등급이 29.8%, 국지적으로 분포하고 개체수도 많지 않은 분류군인 2등급이 20.2% 등으로 나타났다. 생태계교란식물은 미국쑥부쟁이, 가시상추, 애기수영 등 7분류군으로 가시상추는 41.9%로 가장 빈번하게 출현하였고, 미국쑥부쟁이는 34.9%로 하천변에서, 애기수영은 25.6%로 사적지나 소공원 일원에서 빈번하게 출현하였다. 생태계교란식물의 확산을 방지하기 위해서는 지속적인 모니터링이 필요하며, 특히, 정착초기에 물리적 제거나 토양의 대체 등 관리 계획이 필요하다.

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