경상남도 가좌산의 소나무, 참나무, 밤나무 우점산림토양 별 메탄 산화능 평가

Abstract

BACKGROUND: Forest soils contain microbes capableof consuming atmospheric methane (CH4), an amountmatching the annual increase in CH4 concentration inthe atmosphere. However, the effect of plant residueproduction by different forest structure on CH4oxidation is not studied in Korea. The objective of thisstudy was to evaluate the effect of Korean alpine soilshaving different forestation structure on CH4 uptakerates. METHODS AND RESULTS: the CH4 flux was measuredat three sites dominated with pine, chestnut and oak trees insouthern Korea. The CH4 uptake potentials were evaluatedby a closed chamber method for a year. The CH4 uptake ratewas the highest in the pine tree soil (1.05 mg/m2/day) andthen followed by oak (0.930 mg/m2/day) and chestnut trees(0.497 mg/m2/day). The CH4 uptake rates were highlycorrelated to soil organic matter and moisture contents, andtotal microbial and methanotrophs activities. Different withthe general concent, there was no any correlation betweenCH4 oxidation rates, and soil temperature and labile carbonconcentrations, irrespective with tree species. CONCLUSION: Conclusively, the methane oxidation ratewas correlated in positive manner with organic matter,abundance of methanotrophs. Methane oxidation wasdifferent among tree species. This results could be used toestimate methane oxidation rate in forest of Korea aftercomplementing information about statistical data andmethane oxidation of other site.