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2015 Vol.2, Issue 3 Preview Page
The Riparian Vegetation Disturbed by Two Invasive Alien Plants, Sicyos angulatus and Paspalum distichum var. indutum in South Korea

침입외래식물인 가시박과 털물참새피에 의하여 교란된 하안식생

Chang Woo Lee1
,
Deokki Kim1
,
Hyunsuk Cho2
,
Hyohyemi Lee1*
이 창우1
,
김 덕기1
,
조 현석2
,
이 효혜미1*
1Bureau of Ecological Conservation Research, National Institute of Ecology
2Department of Biological Sciences, Inha University
1국립생태원 위해생물연구부
2인하대학교 생명과학과
*교신저자. *Corresponding Author. 
30 September 2015. pp. 255-263
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Abstract

Biological invasion of alien plants is considered to be one of the most serious threats to biodiversity in riparian zones. The effects of two invasive alien plants, Sicyos angulatus and Paspalum distichum var. indutum, on the flora and community structure of the riparian vegetation were investigated at 22 sites at streams in Korea. Sicyos angulatus has invaded the central Korean Peninsula. This alien plant has caused problems to stream managers because of its aggressive vining growth. It had suppressed native vegetation such as trees, shrubs and tall grasses on bank slope and higher floodplains. Paspalum distichum var. indutum has become more widespread in the southern part of Korea. This invasive plant has shallow rhizomes and creeping, extensively branched stolons. It forms a dense mat over lotic or slowly-flowing water and threatens submerged and short emergent hydrophytes. In order to control the introduction and expansion of alien plants, limitation of artificial disturbances and appropriate alien plant management are needed in riparian areas.

Keywords
Alien plant
Disturbance
Floodplain
Invasion control
Vegetation

우리나라 하안역에서 외래식물 침입은 고유식물을 대체함으로써 생물다양성을 위협하는 가장 중요한 요인 중에 하나이다. 우리나라 고유 하안식생에 침입하는 두가지 주요 침입외래종인 가시박 (Sicyos angulatus)과 털물참새피 (Paspalum distichum var. indutum)가 고유 하안식생에 미치는 영향을 파악하기 위하여, 이 두 식물이 침입한 전국 하천의 22개 조사지점에서 식물상과 식생구조를 조사하였다. 가시박은 한반도 중부지방에 주로 침입하였다. 이 외래식물은 수로를 따라서 왕성하게 덩굴을 형성함으로써 제방 사면과 높은 고수부에서 교관목과 장경 초본의 고유식생을 피압하여 하천관리자에게 문제가 되고 있는 초본식물이다. 털물참새피는 한반도 남부지방에서 점차 확산되고 있다. 얕은 지하경과 왕성하게 분지하는 포복경을 가지고 있는 이 침입식물은 정체되거나 유속이 느린 물 위를 덮는 치밀한 매트를 형성하여 경쟁력이 약한 고유 침수식물이나 단경 정수식물을 위협하였다. 하천 하안지역에서 새로운 침입종의 도입을 방지하고 침입한 외래종을 방제하여 고유 하안식생을 보전하기 위해서는 이곳에서 인위 교란을 방지하고 적절한 외래식물 관리가 필요하다.

키워드
외래식물
교란
홍수터
침입 방제
식생
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 2
  • No :3
  • Pages :255-263
  • Received Date : 2015-09-15
  • Revised Date : 2015-09-21
  • Accepted Date : 2015-09-25
  • DOI :https://doi.org/10.17820/eri.2015.2.3.255
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