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Ecological Characteristics of Weed Species on Dry Field in the Eastern Region of Korea

한국 동부지역 밭잡초의 생태적 특성

  • Received : 2015.08.21
  • Accepted : 2015.09.07
  • Published : 2015.09.30

Abstract

This study was conducted in order to investigate the distribution pattern of weeds and ecological characteristics on the dry field in the Eastern region of Korea. The weed species data were obtained from 12 regions in Gangwon-do and Gyeongsang-do. 150 taxa were recorded from three main distinguished habitats; inside of dry field (IDF), embankment around the end of dry field (EDF), levee slope of dry field (LS). The weed species of three different habitats were IDF 83 taxa, EDF 133 taxa and LS 105 taxa. The species showing higher rNCD value was Portulaca oleracea in IDF, Digitaria sanguinalis in EDF and Humulus japonicus in LS. Compositae was dominant family followed by Gramineae, Polygonaceae and Leguminosae. Life form was distinguished as Th-R5-D4-e and three different habitats showed the same results. Disturbance index was analysed as IDF 83.1%, EDF 68.4%, and LS 62.9%. Naturalized rate was analysed as IDF 28.9%, EDF 22.6%, and LS 20.0%. These results indicate that the weeding management, land use intensity, and human interference effect on the distribution index and naturalized rate of weed.

본 연구에서는 한국의 동부지역(강원도, 경상남도, 경상북도)의 밭에서 발생하는 잡초의 분포현황 및 생태적 특성을 파악하였다. 조사결과 밭내부(IDF), 밭둑(EDF), 경사면(LS)에서 46과 117속 127종 1아종 22변종이 포함된 150분류군이 조사되었고 밭내부에서 83분류군이, 밭둑에서 133분류군이, 경사면에서 105분류군이 확인되었다. 우점종을 나타내는 상대기여도(rNCD)는 밭내부에서는 쇠비름, 밭둑에서는 바랭이, 경사지에서는 환삼덩굴이 가장 높게 나타났다. 과별로는 국화과, 벼과, 마디풀과, 콩과의 출현빈도가 높았다. 생활형은 Th-R5-D4-e로 특징지어졌으며 세부 서식처도 동일한 양상을 나타내었다. 교란지수는 작물을 직접적으로 재배하는 밭내부가 83.1%로 가장 높았고 다음으로 밭둑 68.4%, 경사면 62.9% 순이었고 귀화율도 밭내부가 28.9%, 밭둑이 22.6%, 경사면 20.0%로 조사되었다. 밭에서 서식처의 안정성은 밭잡초의 교란지수, 귀화율, 제초관리, 토지이용 강도나 인위적 간섭에 의해 영향을 받는 것으로 판단되었다.

Keywords

References

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