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

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.

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