Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Selection of Indicator Insects for the Evaluation of Agricultural Environment

농업환경 평가를 위한 지표곤충 선발

  • Choi Young-Cheol (Department of Agricultural Biology, National Institute of Agricultural Science and Technology. RDA) ;
  • Park Hae-Chul (Department of Agricultural Biology, National Institute of Agricultural Science and Technology. RDA) ;
  • Kim Jong-Gill (Department of Agricultural Biology, National Institute of Agricultural Science and Technology. RDA) ;
  • Sim Ha-Sik (Department of Agricultural Biology, National Institute of Agricultural Science and Technology. RDA) ;
  • Kwon Oh-Seok (Department of Agricultural Biology, National Institute of Agricultural Science and Technology. RDA)
  • 최영철 (농업 과학기술원 농업생물부) ;
  • 박해철 (농업 과학기술원 농업생물부) ;
  • 김종길 (농업 과학기술원 농업생물부) ;
  • 심하식 (농업 과학기술원 농업생물부) ;
  • 권오석 (농업 과학기술원 농업생물부)
  • Published : 2004.12.01
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Abstract

To select indicator insects, the abundance of which is one of the major criteria for the evaluation of agricultural environment, was designated and monitored in the three sites (Hongcheon A, B, and Yangpyeong) from 2001 to 2003. Characteristics of rice cultivation are usual cultivation with 2 or 3 times sprayed chemical agents per year in Hongcheon A site, duck cultivation with non-sprayed chemical agent, green manure and mowing in Hongcheon B site, and pond snail with non-sprayed chemical agent, green manure and mowing in Yangpyeong site. Dominant floral species are Digitaria ciliaris (Retz.) Koel., Persicaria thunbergii (Siebold & Zuccarini) H. Gross, Echinochioa crus-galli (L.) Beauvois, and Humulus scandens (Lour.) Merr. in Hongcheon A site, Digitaria ciliaris (Retz.) Koel., Persicaria thunbergii (Siebold & Zuccarini) H. Gross, and Echinochloa crus-galli (L.) Beauvois in Hongcheon B site, and Digitaria ciliaris (Retz.) Koel., Setaria viridis (L.) Beauv., and Persicaria langiseta (De Btuyn) Kitagawa in Yangpyeong site. Degree of green naturality (DGN) was higher in Hongcheon B site (2.0) and Yangpyeong site (3.6) than in Hongcheon A site (1.6). Number of species and individual of insects collected in the three sites were abundant on August and September. The species diversity was higher in Hongcheon B and Yangpyeong than in Hongcheon A. And Coleoptera was dominant in the all sites. The dominance index (DI) was the lowest, but diversify index (H'), evenness index (E) and richness index (RI) were the highest in Hongcheon B site. Based on three results, indicator insects for the evaluation of agricultural environment were selected as Dolichus halensis in Hongeheon A site, as Pheropsophus. javanus and Polionemobius mikado in Hongcheon B and Yangpyeong sites.

농업환경 평가를 위한 지표곤충을 선발하기 위해 2001년부터 2003년까지 홍천군 남면 양덕원리(홍천A), 홍천군 남면 명동리(홍천B)와 양평군 단월면 덕수리(양평)에서 농경지 주변에 서식하는 곤충을 채집, 동정하고 자연환경을 조사하였다. 시험지역의 벼 재배특성을 조사한 결과, 홍천A 지역은 농약을 년 2-3회 살포하고, 화학비료의 시비 등 일반관행 농법으로 이루어 졌으며, 홍천B 지역은 오리농법을, 양평 지역은 왕우렁이 농법을 도입하여 무농약, 무시비로 재배하면서 호맥을 재배하여 녹비로 이용하였다. 각 조사지역 내에서의 식생을 조사한 결과, 세 지역 모두 바랭이(Digitaria ciliaris (Retz.) Koel.), 돌피(Echinochloa crus-galli (L.) Beauvois) 등이 우점하였으며, 서식 식물 종수는 세 지역 모두 다양한 종이 서식하였고 녹지자연도(DGN)는 홍천A 지역(1.6)보다 홍천B 지역(2.0)과 양평 지역(3.6)이 높았다. 각 조사지역에 서식하고 있는 곤충을 채집, 분류 동정한 결과, 세 지역 모두 8, 9월에 개체수가 가장 많았으며, 채집 종수는 6월부터 9월까지 30종 이상이었다. 홍천A 지역에 비해 홍천B 지역과 양평 지역에서 채집된 곤충의 종수가 더 많았으며, 딱정벌레목의 종수가 다른 목의 곤충의 종수에 비해 월등히 많았다. 세 지역의 곤충 군집분석 결과, 우점도 지수(DI)는 홍천B 지역이 0.24로 가장 낮았으나, 종다양도(H'), 풍부도(RI)와 균등도 지수(DI)는 홍천B 지역과 양평 지역이 홍천A 지역보다 높았다. 세 지역의 시기별, 종별 채집빈도 등을 종합분석한 결과, 농업생태계 환경평가를 위한 유망 지표 곤충종으로 홍천A 지역은 딱정벌레목의 등빨간먼지벌레, 홍천B 지역과 양평 지역은 남방폭탄먼지벌레와 좀방울벌레가 선발되어야 할 것으로 판단된다.

Keywords

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