Relationships between Cellulose Decomposition and Soil Environmental Factors in Three Coniferous Plantations

서지정보

· 발행기관 : 한국농림기상학회
· 수록지 정보 : 한국농림기상학회지 / 14권 / 1호 / 39 ~ 44페이지
· 저자명 : 김춘식

초록

This study was carried out to determine the relationships between cellulose decomposition and soil environmental factors in larch (Larix leptolepis) and pine (red pine: Pinus densiflora; rigitaeda pine: P. rigida P. taeda) species planted in the same year (1963). The variation of cellulose mass loss with soil temperature, soil pH, soil CO2 efflux rates, and soil water content was measured monthly for 4 months (July, August, September and October 2006) from three coniferous plantations. Mean mass loss rates during the study period were generally more rapid in rigitaeda pine (6.5 mg g-1 day-1) than in red pine (6.2 mg g-1 day-1) or larch (6.1 mg g-1 day-1) plantations, although the mass loss rates were not significantly different among three tree species (P > 0.05). Cellulose mass loss rates among three tree species were positively correlated with soil temperature (red pine: r = 0.77, P < 0.05; rigitaeda pine: r = 0.59, P < 0.05; larch: r = 0.48, P < 0.05) at the 20 cm soil depth, while the mass loss rates were negatively correlated with soil pH (red pine: r = -0.63, P < 0.05; rigitaeda pine: r = -0.47, P < 0.05; larch: r = -0.43, P < 0.05). There was a significant correlation between cellulose mass loss and soil CO2 efflux rates except for regitaeda pine, while no significant correlation (P > 0.05) between cellulose mass loss and soil water content in larch or rigitaeda pine plantation. The results indicate that cellulose mass loss rates in soil layers depend on the different soil environmental factors caused by tree species.

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