Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
권호 표지

Effects of Felling of Damaged Tree of Pine Wilt Disease on Soil Respiration in Pinus densiflora Stands

소나무재선충병 피해목 벌채가 토양호흡에 미치는 영향

  • Cho, Min-Gi (Graduate School, Gyeongsang National Univ.) ;
  • Jeon, Kwon-Seok (Southern Forest Research Center) ;
  • Park, Jun-Ho (Gyeongsangnam-do Forest Environment Research Institute) ;
  • Kim, Jong-Kab (Div. of Environmental Forest Science(Instit. of Agric. and Life Sci.) Gyeongsang National Univ.) ;
  • Moon, Hyun-Shik (Div. of Environmental Forest Science(Instit. of Agric. and Life Sci.) Gyeongsang National Univ.)
  • 조민기 (경상대학교 대학원) ;
  • 전권석 (남부산림연구소) ;
  • 박준호 (경상남도 산림환경연구원) ;
  • 김종갑 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 문현식 (경상대학교 환경산림과학부(농업생명과학연구원))
  • Received : 2009.02.12
  • Accepted : 2009.04.20
  • Published : 2009.04.30

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Abstract

The objectives of this study was to obtain the basic information for reasonable management of soil ecosystem damaged by pine wilt disease. Soil temperature and moisture content were $15.3{^{\circ}C}$ and 11.5% at whole-cut site, $14.4{^{\circ}C}$ and 13.5% at partial-cut site, and $13.7{^{\circ}C}$ and 14.8% at control site, respectively. The content of soil organic matter throughout the study period ranged from 2.11 to 2.64% at whole-cut site, 2.26 to 3.33% at partial-cut site, and 2.27 to 3.10% at control. Soil respiration rates showed seasonal fluctuations increasing in summer, which showed positive correlations between soil respiration and soil temperature. Average soil respiration were 0.24, 0.36 and $0.32gCO_{2}/m^{2}/hr$ at whole-cut site, partial-cut site, and control, respectively. $Q_{10}$ values ranged from 2.39 to 2.68 at Pinus densiflora stands damaged by pine wilt disease. Annual soil respiration rate at whole-cut site, partial-cut site and control were 8.1, 15.6 and $14.6tCO_{2}/ha/yr$, respectively.

본 연구는 소나무재선충병의 피해를 받은 토양생태계의 합리적인 관리를 위한 기초정보를 제공할 목적으로 이루어졌다. 토양온도와 수분함량은 완전벌채지 $15.3{^{\circ}C}$, 11.5%, 일부벌채지 $14.4{^{\circ}C}$, 13.5%, 대조구 $13.7{^{\circ}C}$, 14.8%로 나타났다. 토양유기물 함량은 완전벌채지가 2.11~2.64%, 일부벌채지 2.26~3.33%, 대조구 2.27~3.10%의 범위에 있은 것으로 분석되었다. 토양호흡량은 계절적인 차이가 있었는데 여름철에 높았으며, 토양온도와 정의 상관이 있는 것으로 나타났다. 평균 토양호흡량은 완전벌채지 0.24, 일부벌채지 0.36, 대조구 $0.32gCO_{2}/m^{2}/hr$로 나타나 소나무재선충 피해목만 벌채한 일부벌채지의 토양호흡량이 가장 높은 것으로 분석되었다. 소나무재선충병 피해지 산림토양의 $Q_{10}$값은 2.39에서 2.68 사이에 있는 것으로 나타났다. 조사기간을 통한 년간 토양호흡량은 완전벌채지, 일부벌채지, 대조구에서 각각 8.1, 15.6, $14.6tCO_{2}/ha/yr$으로 분석되었다.

Keywords

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