한국유기농업학회지 (Korean Journal of Organic Agriculture)

  • 제26권4호
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  • Pages.687-706
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  • 2018
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  • 1229-3571(pISSN)
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  • 2287-819X(eISSN)
한국유기농업학회 (Korean Association of Organic Agriculture)
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농법 차이에 따른 농경지 생태계의 생물 다양성 및 군집 구조의 변화

Change in Biodiversity and Community Structures in Agricultural Fields depending on Different Farming Methods

  • 김훈 (단국대학교 자연과학대학 생명과학과) ;
  • 김교진 (단국대학교 자연과학대학 생명과학과) ;
  • 순옌 (단국대학교 자연과학대학 생명과학과) ;
  • 조영주 (단국대학교 공공인재대학 환경자원경제학과) ;
  • 김태연 (단국대학교 공공인재대학 환경자원경제학과) ;
  • 문명진 (단국대학교 자연과학대학 생명과학과)
  • 투고 : 2018.10.04
  • 심사 : 2018.11.22
  • 발행 : 2018.11.30
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초록

유기 농업은 토양에 물리적, 화학적 영향을 미칠 뿐 아니라 이에 따른 군집 구조와 생태적 영향을 통해 생물 다양성과 직접적으로 연관되어 있는 것으로 알려져 있다. 본 연구는 2017년 4월부터 10월까지 충청북도 괴산 내 유기 농법 및 관행 농법 시행 논과 밭에서 육상 및 저서 무척추동물상 모니터링을 수행하고 그에 따른 종 다양성의 변화를 비교 분석하였다. 그 결과, 네 곳에서 총 680종(14,371개체)이 확인되었으며 유기 농법을 시행하는 지역에서 더 많은 종 수가 확인되었다. 특히 개체 수에 따른 다양한 지수 분석을 시행한 결과, 유기 농법 시행 논에서 관행 농법 시행 논에 비해 약 40% 높은 다양성이 관찰되었고, 밭의 경우 유기 농법 시행 지역에서 약 10% 높은 다양성이 확인되었다. 종 풍부도의 경우 유기 농법 시행 논에서 약 60% 높게 나타났고, 유기 농법 시행 밭에서는 약 40% 높게 나타났다. 우점도와 균등도 지수 분석 결과, 관행 농법 시행 논에서만 낮은 균등도와 특정 종의 우점도가 높게 나타나 부분적인 우점화 현상이 나타나고 있음을 확인하였다. 종 분포의 경우 네 곳 모두에서 노린재목, 파리목, 거미목의 다양성이 가장 높게 나타났으며, 개체 수의 경우 유기 농법 시행 지역에서는 노린재목, 파리목, 거미목, 벌목의 개체 수가 가장 많았고, 관행 농법 시행 지역에서는 파리목, 노린재목, 거미목, 딱정벌레목의 개체 수가 높게 나타났다.

Organic agriculture is well known to be not only affecting the physical and chemical status of the soil but also closely connected to the biodiversity through complex community structure and ecological interactions. Current study monitored and analyzed the invertebrate biodiversity of organic and conventional paddy fields and upland fields from April, 2017 to August, 2017. Total of 680 species (with 14,371 individuals) were confirmed - more number of species were identified at the organic agriculture practicing fields. According to the various indices analysis, organic paddy field showed about 40% higher diversity index, while organic upland field showed about 10% higher diversity index. Richness index at organic paddy field was 60% higher compared to conventional paddy field, while organic upland field showed 40% higher value. Dominance and evenness index at conventional agriculture practicing fields were low, which possibly indicate at least partial dominance phenomenon. Hemipteran, dipteran and aranean species showed highest diversity in all fields, while dipteran, hemipteran, aranean and coleopteran species had highest diversity in conventional agriculture practicing fields.

키워드

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