Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Carbon Storage of Natural Pine and Oak Pure and Mixed Forests in Hoengseong, Kangwon

횡성지역 천연 소나무와 참나무류 순림 및 혼효임분의 탄소 저장량 추정

  • Lee, Sue Kyoung (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Son, Yowhan (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Noh, Nam Jin (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Heo, Su Jin (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Yoon, Tae Kyung (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Lee, Ah Reum (Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University) ;
  • Sarah, Abdul Razak (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Lee, Woo Kyun (Division of Environmental Science and Ecological Engineering, Korea University)
  • 이수경 (고려대학교 환경생태공학부) ;
  • 손요환 (고려대학교 환경생태공학부) ;
  • 노남진 (고려대학교 환경생태공학부) ;
  • 허수진 (고려대학교 환경생태공학부) ;
  • 윤태경 (고려대학교 환경생태공학부) ;
  • 이아름 (고려대학교 기후환경학과) ;
  • ;
  • 이우균 (고려대학교 환경생태공학부)
  • Received : 2009.10.26
  • Accepted : 2009.11.02
  • Published : 2009.12.31
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Abstract

This study was conducted to estimate the carbon (C) contents in pure and mixed stands of pine (Pinus densiflora) and oak (Quercus spp.) trees for establishing the C inventory of forest ecosystems. A total of fifteen 20 m${\times}$20 m pure and mixed stands of pine and oak trees were chosen in natural forests in Hoengseong, Kangwon based on the basal area of all trees ${\geq}$ 5 cm DBH: three of 95% of pine and 5% oak trees [pine stand], three of 100% of oak trees [oak stand], and nine of 20 to 70% of pine and 80 to 30% of oak trees [mixed stand]. To estimate C contents in the study stands, biomass in vegetation, forest floor and coarse woody debris (CWD) were calculated and C concentrations in vegetation, forest floor, CWD and soil (0-30 cm) were analyzed. There was no significant difference in vegetation C contents among the stands; 147.6 Mg C/ha for the oak stand, 141.4 Mg C/ha for the pine stand and 115.8 Mg C/ha for the mixed stand. Forest floor C contents were significantly different among the stands (p<0.05); 12.7 Mg/ha for the pine stand, 9.9 Mg/ha for the oak stand, and 8.4 Mg/ha for the mixed stand. However, CWD C contents were not significantly different among the stands (p>0.05); 2.2 Mg/ha for the mixed stand, 1.7 Mg/ha for the oak stand, and 1.1 Mg/ha for the pine stand. Soil C contents up to 30 cm depth were not significantly different among the study stands; 44.4 Mg C/ha for the pine stand, 41.6 Mg C/ha for the mixed stand, and 33.3 Mg C/ha for the oak stand. Total ecosystem C contents were lower in the mixed stand than those in the pure stands, because vegetation C contents which occupied almost total ecosystem C contents were lower in the mixed stand than those in the pure stands; 199.6 Mg C/ha for the pine stand, 192.5 Mg C/ha for the oak stand and 169.1 Mg C/ha for the mixed stand. Lower vegetation C contents in the mixed stand might be influenced by interspecific competition between pine and oak trees and intraspecific competition among the oak trees resulted from high stand density. We suggest that forest management such as thinning to enhance C storage is indispensible for minimizing the competition in forest ecosystems.

산림 생태계 내 탄소 수지에 관한 기초자료를 확보하기 위해 소나무와 참나무류의 순림 및 이들의 혼효임분에 대한 탄소 저장량을 추정하였다. 연구대상지는 강원도 횡성군 둔내면 일대로 임분별로 흉고직경 5 cm 이상 임목에 대한 흉고단면적($m^2/ha$)을 기준으로 소나무:참나무류의 비율이 95:5인 소나무 순림과 0:100인 참나무류 순림, 그리고 20:80-70:30인 혼효림을 선정하였다. 각각의 임분 내 식생, 낙엽층, 고사목의 생체량과 탄소 농도를 분석하고, 0-30 cm 깊이까지의 토양 탄소 농도를 분석하였다. 식생(상층 임목과 하층 식생)의 탄소 저장량은 참나무류 순림에서 147.6 Mg C/ha, 소나무 순림에서 141.4 Mg C/ha, 혼효림에서 115.8 Mg C/ha 등으로 통계적으로 유의한 차이는 없었다. 낙엽층 내 탄소 저장량은 소나무 순림에서 12.7 Mg C/ha, 참나무류 순림에서 9.9 Mg C/ha와 혼효림에서 8.4 Mg C/ha 등이었으며, 고사목 내 탄소 저장량은 혼효림에서 2.2 Mg/ha, 참나무류 순림에서 1.7 Mg/ha 와 소나무 순림에서 1.1 Mg/ha 등으로 낙엽층의 탄소량은 임분간 유의한 차이가 있었으나(p<0.05), 고사목의 탄소 저장량은 임분간 유의한 차이가 없었다(p>0.05). 지표로부터 30 cm 깊이까지의 토양 탄소 저장량은 소나무 순림에서 44.4 Mg C/ha이고, 혼효림에서 41.6 Mg C/ha과 참나무류 순림에서 33.3 Mg C/ha 등의 분포를 보였으나 임분간 유의한 차이는 없었다. 생태계 내 총 탄소 저장량은 소나무 순림에서 199.6 Mg C/ha, 참나무류 순림에서 192.5 Mg C/ha, 혼효림에서 169.1 Mg C/ha 등으로 임분별로 통계적으로 유의한 차이는 없었다. 탄소 저장량이 혼효림에서 순림보다 낮은 것은 탄소 저장량의 대부분을 차지하는 식생의 탄소 저장량이 혼효림에서 더 낮기 때문이었다. 혼효림의 식생은 소나무와 참나무류의 종간경쟁으로 참나무류의 직경생장이 둔화되고 임분 밀도가 높아 참나무류 임목간의 경쟁이 심하게 되어 순림보다 낮은 생체량을 보이는 것으로 추정된다. 혼효임분에서 탄소 저장량을 증가시키기 위해서는 간벌과 같은 적절한 임분관리를 통한 임분의 종내 및 종간경쟁을 완화시킬 필요가 있는 것으로 사료된다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단,한국과학재단,국토해양부

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