Soil Carbon Cycling and Soil Co2 Efflux in a Red Pine (Pinus densiflora)
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다운로드
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참고문헌
초록
Abstract
This study was conducted to evaluate forest carbon cycling and soil CO2 efflux rates in a 42-year-old pine (Pinus densiflora) stand located in Hamyang-gun, Korea. Aboveground and soil organic carbon storage, litterfall, litter decomposition, and soil CO2 efflux rates were measured for one year. Estimated above-ground biomass carbon storage and increment in this stand were 3,250 gC/m2and 156 gC m-2yr-1, respectively. Soil organic carbon storage at the depth of 30 cm was 10,260 gC/m2. Mean organic carbon inputs by needle and total litterfall were 176 gC m-2-1and 235 gC m-2yr-1, respectively. Litter decomposition rates were faster in fine roots less than 2 mm diameter size (< 220 g kg-1yr-1) than in needle litter (< 120 g kg-1yr-1). Annual mean and total soil respiration rates were 0.37 g CO2 m-2h-1and 2,732 g CO 2 m-2yr-1during 2 eflux and soil temperature (r = 0.8149), while soil CO2 efflux responded negatively to soil pH (r = -0.3582).
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