Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effects of Thinning on Abundance and Community Structure of Arthropods in a Pinus koraiensis Plantation

잣나무림조림지에서 간벌이 절지동물 풍부도와 군집구조에 미치는 영향

  • Kwon, Tae-Sung (Department of Forest Ecology Research, Korea Forest Research Institute) ;
  • Yang, Hee-Moon (Department of Forest Ecology Research, Korea Forest Research Institute) ;
  • Shin, Joon-Hwan (Department of Forest Ecology Research, Korea Forest Research Institute) ;
  • Kim, Suk-Kuwon (Department of Forest Ecology Research, Korea Forest Research Institute) ;
  • Yi, Hoon-Bok (Division of Environmental & Life Science, Seoul Women's University)
  • 권태성 (국립산림과학원 산림생태연구과) ;
  • 양희문 (국립산림과학원 산림생태연구과) ;
  • 신준환 (국립산림과학원 산림생태연구과) ;
  • 김석권 (국립산림과학원 산림생태연구과) ;
  • 이훈복 (서울여자대학교, 환경생명과학부)
  • Received : 2010.07.29
  • Accepted : 2010.09.16
  • Published : 2010.09.30
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Abstract

Thinning treatment has a huge effect on understory and litter structures in forest ecosystem, and the resulting changes may impact some arthropod groups such as plant-feeders and detritivores. This study was carried out to find a change in arthropod abundance and their structures in relation to the thinning activity in a Pinus koraiensis plantation in Chuncheon, Korea, where thinning was conducted twice: in 1998-2000 (old-thinning) and 2007 (new-thinning). Arthropods were collected using pitfall traps in 2006 and 2008. Effects of old-thinning on change of abundance and community structure of arthropod were significant, but the effects of new-thinning were not significant. The most significant thinning effect was found in detritivores, followed by plant feeders, but the effect was hardly significant in predators. Among detritivores the changes in abundance was diverse. The abundance of orthopteran plant-feeder increased, but Curculionidae declined after thinning. There was not different in abundance of total arthropods between thinned and unthinned areas because the difference may have cancelled each other out by increased or decreased abundance of taxa. Community structures of arthropods were most greatly affected by years, followed by the old-thinning, but the new-thinning did not affect community structures.

간벌 후 하층식생과 낙엽층에 큰 변화가 일어나기 때문에 이로 인한 식식성 절지동물이나 부식성 절지동물의 변화가 예상된다. 1998~2000년(과거 간벌)과 2007년(최근 간벌)에 간벌이 실시된 춘천의 30~50년생 잣나무 조림지를 대상으로 함정트랩법으로 2006년과 2008년에 조사를 실시하였다. 절지동물의 밀도와 군집구조의 변화를 분석한 결과 과거 간벌의 영향은 나타났으나 최근 간벌의 영향은 발견되지 않았다. 간벌로 인한 영향이 부식성 절지동물에서 가장 높은 빈도로 나타났고 그 다음으로는 식식성 절지동물이 높았으며, 포식성 절지동물에서 가장 낮았다. 부식성 절지동물의 다양한 변화는 확인이 되었으나, 식식성 절지동물의 증가는 일부 분류군(식식성 메뚜기목)에서만 발견되었고, 감소한 식식성 절지동물(바구미과)도 있었다. 간벌로 인해 밀도가 증가하는 분류군과 감소하는 분류군의 상쇄효과로 인해 절지동물의 전체 밀도는 변화가 없었다. 군집구조의 경우 연도에 의해 가장 큰 영향을 받았고, 과거 간벌의 영향이 다음으로 강했으나 최근 간벌의 영향은 나타나지 않았다.

Keywords

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