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자연분해비닐 논토양 피복이 저서성 대형무척추동물의 군집구조에 미치는 영향

Effect of Covering the Soil with Naturally Degrading Polymer Film on the Benthic Macroinvertebrates Community Structure in Paddy Field

  • 박진영 (경북대학교 생태환경대학 생물응용학과) ;
  • 권순직 ((주) 생태조사단) ;
  • 남홍식 (국립농업과학원 유기농업과) ;
  • 강충길 (국립농업과학원 유기농업과) ;
  • 박종균 (경북대학교 생태환경대학 생물응용학과)
  • Park, Jin-Young (Department of Applied Biology, College of Ecology & Environmental Sciences, Kyungpook National University) ;
  • Kwon, Soon-Jik (Korea Ecosystem Service, Gasan-dong, Geumcheon-gu, Seoul Metropolitan Government) ;
  • Nam, Hong-Sik (Organic Agriculture Division, Department of Crop Life Safety, National Academy of Agricultural Science, RDA) ;
  • Kang, Chung-Kil (Organic Agriculture Division, Department of Crop Life Safety, National Academy of Agricultural Science, RDA) ;
  • Park, Jong-Kyun (Department of Applied Biology, College of Ecology & Environmental Sciences, Kyungpook National University)
  • 투고 : 2011.03.07
  • 심사 : 2011.06.20
  • 발행 : 2011.06.30

초록

본 연구는 2009년 5월부터 9월까지 경기도 수원시 당수동에 자연분해비닐을 피복한 논의 저서성대형무척추동물의 종류와 군집구조 영향을 파악하기 위해 조사하였다. 실험구는 5개로 왕우렁이농법(GF), 자연분해비닐+유기농법(NOF), 자연분해비닐+화학농업(NCF), 관행농법(CF), 무처리구(NF)를 설정하였다. 조사결과 저서성대형무척추동물의 종수와 개체수 각각 NOF>GF>NF>NCF>CF, NOF>NCF>CF>NF>GF순으로 나타났다. 우점도지수(DI)는 각 실험구에서 0.43~0.95로 나타났으며, 평균 우점도지수는 GF>NCF>NF=CF>NOF 순으로 각각 나타났다. 종다양도지수(H')는 0.49~2.93로 나타났으며, 평균 종다양도지수는 NOF>NF>GF>CF>NCF 순으로 각각 나타났다. 비닐 피복 후 시간이 경과함에 따라 저서생물은 조금씩 회복이 되어가는 경향이 있었으나, 거머리류와 수서딱정벌레류가 증가하는 경향이 있었다. 비닐피복에 의해 민감하게 반응한 분류군은 환형동물문과 연체동물문이었으며 피복 후 종수와 특히 개체수가 매우 떨어졌으며, 이후 종수는 회복되는 경향이 있었으나 개체수는 줄어들었다.

This study was conducted to investigate the influence of natural degrading polymer film covering in rice paddies on the benthic macroinvertebrate community structure in Dangsu-dong, Suwon, Gyeonggi-do from May 2009 to September 2009. We compared 5 treatments: golden apple snail farming (GF), natural degrading polymer film + organic farming (NOF), natural degrading polymer film + chemical farming (NCF), conventional farming (CF), and no fertilization (NF) as the control. The total number of species was highest in NOF followed by GF, NF, NCF, and CF. The total number of individuals was highest in NOF followed by NCF, CF, NF, and GF. The Dominance index (DI) ranged from 0.43 to 0.95. The highest dominance index was in GF followed by NCF, NF=CF, and NOF. The species diversity index (H') for each experimental plot ranged from 0.49 to 2.93. The average species diversity index was highest in NOF followed by NF, GF, CF, and NCF. After the natural degrading polymer film covered the paddies, the benthic macroinvertebrates tended to recover, but leeches and aquatic beetles increased. Mollusca and Annelida, which are sensitive taxa, decreased in both species and individual numbers after the soil was covered with the natural degrading polymer film. The number of species tended to recover. However, the number of individuals continued to decrease.d, especially individuals. Since then, the number of species tended to recover. However, the number of individuals decreased.

키워드

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피인용 문헌

  1. Effect of Mulching with Easily-Decomposable Organic Materials on the Rice Growth and Earthworm Ecology Characteristics in Paddy Fields vol.22, pp.4, 2014, https://doi.org/10.17137/Korrae.2014.22.4.072