落葉広葉樹林伐採後の再生過程における炭素循環の変化 : I.有機物量・炭素蓄積量の変化

概要

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Plant biomass, litter accumulation, and soil carbon storage were measured in four different-aged deciduous broadleaf forests (P1-P4) that had been clear-cut and in a mature forest (P5). Plant biomass increased as forest age increased, and leaf and fine-root biomass were almost constant. Accumulation of dead plant parts decreased at first and then gradually increased. Recovery of fine-litter accumulation was observed at an early stage of regeneration. Carbon accumulation in the soil decreased remarkably in the first 40 years and then gradually increased. Total carbon accumulation was 202 tC/ha in P1 (12 years old), 180 tC/ha in P2 (45 years old), and 323 tC/ha in P5 (mature). The forest ecosystem changed from a CO_2 source to a CO_2 sink, relative to the atmosphere, fairly early in the regeneration.
日本生態学会の論文
1985-03-30