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The Exotic Flora of Korea: Actual List of Neophytes and Their Ecological Characteristics

한국의 귀화식물: 신귀화식물상의 현황과 생태형질 특성

  • Ryu, Tae-Bok (Division of Ecological Conservation, National Institute of Ecology) ;
  • Kim, Jong-Won (Department of Biological Sciences, Keimyung University) ;
  • Lee, Seung-Eun (Division of Ecological Assessment, National Institute of Ecology)
  • 류태복 (국립생태원 생태보전연구실) ;
  • 김종원 (계명대학교 생명과학과) ;
  • 이승은 (국립생태원 생태평가연구실)
  • Received : 2017.01.07
  • Accepted : 2017.08.09
  • Published : 2017.08.31

Abstract

Rapid changes in the flora of exotic species are ecological problems that cause the alteration of national and regional biota. The purpose of this study is to identify the reality of neophyte flora currently inhabiting in Korea. Having analyzed a total of 151 studies published up until 2016, we found the qualitative and quantitative gaps among the preceding studies due to the lack of rigorousness on the application of the spatial and temporal level of exotic species and academic terminology. In this study, the neophyte is defined as the flora introduced temporarily after the Enlightenment in Korea (late 19th century) and spatially in the Eastern Asiatic Province of the Takhtajan's floral region instead of a country boundary. A total of 326 taxa of 184 genera of 39 families were identified and analyzed for their distributional origin and habitat characteristics. Approximately 87% (285 taxa) was a component of the single-layered herb vegetation, and a total of 211 taxa originated from Europe and North America which are the same temperate biome as Korea. The wetland vegetation components were much fewer with 21 taxa, but they included a large number of invasive alien species that caused critical deterioration in the habitat structure and function of aquatic ecosystems. Ecological approaches to exotic species categories such as Ephemerophyten and Apophyten have emerged.

외래 귀화식물상의 급격한 변화는 국가 및 지역 생물상의 질적 양적 변질을 초래하는 생태학적 문제이다. 본 연구의 목적은 현존 분포하는 신귀화식물상의 실체를 밝히는 것이다. 2016년까지 발표된 선행 연구자료 151편을 분석하였다. 귀화식물에 대한 시공간적 수준(level)과 학술 용어 적용의 엄격성 결여로부터 선행 연구 간에 양적 질적 차이가 있었다. 본 연구에서는 공간적으로 국가 대신 동아시아구계구(Eastern Asiatic Province)의 식물지리구계, 시간적으로 개화기(19세기말)를 기준으로 신귀화식물(Neophyte)을 정의하였다. 목록화 된 신귀화식물은 그 원산지와 서식처 특성을 분석하였다. 신귀화식물은 총 39과 184속 326분류군이고, 약 87%(285분류군)가 단층초본식생형의 구성요소였음이 밝혀졌다. 온대림 생물군계의 유럽 및 북아메리카 원산(211분류군)이 가장 많았다. 습지식생 구성요소는 전체 6.4%(21분류군)로 매우 제한적이었지만, 수생태계 서식처의 구조와 기능에 급격한 질적 변질을 야기하는 침입외래식물종을 다수 포함하는 것으로 지목되었다. 일시정착외래식물(Ephemerophyten), 반고유문화종(Apophyten) 등과 같은 귀화식물 범주에 대한 생태학적 접근이 대두되었다.

Keywords

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