Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Differences in Habitat Structure and Herpetofauna Populations Caused by Thinning

간벌에 의한 서식지 구조와 양서·파충류 개체군의 특성 차이

  • Park, Chang-Deuk (Department of Forest Sciences, Seoul National University) ;
  • Jung, Ji-Hwa (Department of Forest Sciences, Seoul National University) ;
  • Son, Seung-Hun (School of Bioresource and Bioscience, Chung-Ang University) ;
  • Hwang, Hyun-Su (School of Bioresource and Bioscience, Chung-Ang University) ;
  • Lee, Woo-Shin (Department of Forest Sciences, Seoul National University)
  • Received : 2016.04.26
  • Accepted : 2016.05.09
  • Published : 2016.06.30
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Abstract

This study was conducted to clarify the differences in habitat structure and amphibian and reptile (herpetofauna) populations between before and after thinning in the coniferous and deciduous forests from June to September 2014 and 2015 at the Mt. Maewha of Hongcheon, Gangwon province, Korea. Forest structure was dramatically changed after thinning. Coverage of understory and mid-story were decreased while volume and number of downed trees were increased after thinning. We used line transect sampling method on a total of 4 transect lines, 2 lines in each forest type. 119 individuals of 5 amphibian species and 5 individuals of 3 reptile species were recorded. Mean number of amphibian species were decreased after thiining in the coniferous forest. There was no observed reptiles after thinning in the coniferous and deciduous forests. Detailed monitoring with different area, frequency and intensity might be needed to clarify more precise differences characterisitics of herpetofauna by thinning.

본 연구는 간벌에 따른 서식지 구조와 양서 파충류 개체군 특성 차이를 파악하기 위해 2014년과 2015년의 6월부터 9월까지 강원도 홍천군 매화산의 침엽수림과 활엽수림에서 각각 실시되었다. 산림의 수직구조를 파악한 결과, 모든 임상에서 간벌 이후 산림환경이 구조적으로 크게 변화하였다. 특히 간벌 후 중층 및 하층의 피도량이 감소한 반면, 도목잔존물의 수와 부피는 증가하는 경향을 보였다. 침엽수림과 활엽수림에 각각 2개 조사구, 총 4개 조사구 내에서 간벌 전과 후 월별 1회씩 총 32번의 선형횡단조사를 통해 양서류는 5종 119개체, 파충류는 3종 5개체가 확인되었다. 임상별 관찰된 평균 종수 및 개체수 차이를 파악한 결과, 침엽수림에서는 양서류의 평균 종수가 간벌 후 감소한 것으로 나타났으며, 특히 참개구리(Pelophylax nigromaculatus)와 북방산개구리(Rana dybowskii) 등 2종이 차이를 보였다. 파충류는 관찰 간벌 후 모든 임상에서 관찰되지 않았다. 향후 간벌에 따른 양서 파충류의 개체군 특성 차이를 파악하기 위해서는 간벌의 규모와 빈도, 강도 등 다양한 요인을 고려한 정밀 연구가 필요할 것으로 생각된다.

Keywords

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