Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
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Analysis of Characteristics of Naturalized Plants in Reservoirs of Gyongsan-si

경산시 저수지의 귀화식물 특성 분석

  • Sung, Jung-Won (Department of Landscape Architecture, Graduate School of Yeungnam University) ;
  • Kim, Young-Joo (Department of Agricultural Engineering(Insti. of Agri. & Life Sci.), Gyeongsang National University) ;
  • Kwon, Jin-Wook (Department of Landscape Architecture, College of Natural Resources, Yeungnam University) ;
  • Kim, Keun-Ho (Department of Landscape Architecture, College of Natural Resources, Yeungnam University)
  • 성정원 (영남대학교 대학원) ;
  • 김영주 (경상대학교 지역환경기반공학과(농업생명과학연구원)) ;
  • 권진욱 (영남대학교 조경학과) ;
  • 김근호 (영남대학교 조경학과)
  • Received : 2014.08.22
  • Accepted : 2014.11.07
  • Published : 2014.12.31
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Abstract

The aim of the research was to analyze characteristics of naturalized plants in reservoirs of Gyongsan-si to provide necessary information for future management of naturalized plants. All plants were identified and recorded by using field surveys. The results showed that 164 taxa in total (62 families, 126 genera, 148 species, 13 varieties and 2 forms) were found and the numbers of naturalized plants was 23 taxa: 9 families, 19 genera, 22 species, 1 varieties. 65%(15 taxa) of the total population were originated from North America, followed by Europe(21.7%(5 taxa)), Africa(8.7%(2 taxa)) and Asia (4.4% (1taxa)). 9 taxa in naturalized plants were invaded during the third period(1964-present). Naturalized Index(NI) and Urbanization Index(UI) were 13.9% and 7.2%, respectively. This result indicated that NI of the study area was higher than the Korean average of NI(10.3%) suggested by Ko(1995). Finally, the research found 14 taxa (Rumex crispus L., Lepidium virginicum L., Trifolium repens L., Oenothera biennis L., Taraxacum officinale Weber, Erigeron annuus (L.) Pers., Ambrosia artemisii folia L., Aster pilosus Willd., Aster subulatus var. sandwicensis A. G. Jones, Bidens frondosa L., Lactuca scariola L., Panicum dichotomiflorum Michx.) that would have a negative impact on reservoir ecosystems. Therefore, the proper management and monitoring for these naturalized plants would be introduced to protect natural species and landscape in reservoirs.

본 연구는 경산시에 위치한 저수지를 대상으로 귀화식물의 현황 특징을 파악하여 적절한 미래관리방안을 모색하기 위한 기초자료를 제공하는데 그 목적이 있다. 경산시 일대의 저수지 식물현황 분석결과 62과 126속 148종 13변종 2품종으로 전체 164분류군으로 나타났다. 연구 대상지에 분포하는 귀화식물은 9과 19속 22종 1변종으로 총 23분류군을 확인하였다. 23분류군 중 원산지는 북아메리카가 15분류군, 유럽이 5분류군, 아프리카가 2분류군, 아시아가 1분류군으로 나타났다. 귀화율은 12.2%이며, 도시화지수는 2.1%이다. 이 결과는 Go(1995)이 제시한 우리나라 평균 귀화율 10.3%보다 높은 수치를 보였다. 마지막으로, 연구 대상지에서 나타난 저수지 생태계에 악영향을 줄 수 있는 귀화도가 4등급이상인 14분류군(소리쟁이, 콩다닥냉이, 토끼풀, 달맞이꽃, 서양민들레, 개망초, 돼지풀, 미국쑥부쟁이, 큰비짜루국화, 미국가막사리, 가시상추, 미국개기장)등 을 중점적인 관리대상으로 선정하여 적절한 관리방안과 지속적인 모니터링이 필요할 것으로 사료된다.

Keywords

Acknowledgement

Supported by : 영남대학교

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