Nutrient Dynamics in Decomposing Forest Leaf Litter : A Comparison of Field and Laboratory Microcosm Approach

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概要

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• The effect of incubation setting (greenhouse: GM and field: FM microcosms) on nutrient element dynamics during decomposition of Japanese Konara Oak (Quercus serrata Murray) and Japanese Red Pine (Pinus densiflora Sieb et. Zucc.) litter was studied_ Results show a disparity in relative concentrations and amounts of the same type of litter when incubated in different settings. The nutrient mobility, however, showed similar trend. The order of elemental mobility after 12 months for Quercus in FM was: P > K > Mg > C > Mn > Ca > N > Al > Cu > Zn > Fe; for GM it was: P > K > Mn > Mg > C > Ca > N > Al > Cu > Zn > Fe. For Pinus, elemental mobility in FM was: K > Mg > C > Mn > N > p > Cu > Zn > Al > Fe; while for GM was: K > C > Mn > N > Ca > Mg > Cu > Al > P > Zn > Fe. The elements in Quercus that lost their mass were P, K, Mg, Ca, Mn and C while those that increased were N, Cu, Al, Fe and Zn. For Pinus, K and Mg lost their nutrient mass while the other elements had increased or fluctuated but tended to increase. Three patterns of nutrient mobility were observed: first, the concentration increased while the nutrient mass (absolute amount) decreased; second, both concentration and nutrient mass increased; third, the concentration and nutrient mass decreased. On tracing nutrient mobility over time, the linear regression of nutrient element mass and litter element mass was preferred over the carbon to element ratios because the former gave a clearer picture of the relationship. On the over-all, the pattern of nutrient changes in greenhouse microcosms were different from those observed in the field, hence nutrient cycling studies using greenhouse-microcosm approach alone may give inaccurate results.

• 一般社団法人日本森林学会の論文
• 1998-05-16

著者

• Katagiri Shigeo

  Faculty of Life and Environmental Science, Shimane University

• Salamanca Eric

  Faculty Of Life And Environmental Sciences Shimane University:(present)college Of Agriculture And Fo

• Kaneko Nobihiro

  Faculty of Life and Environmental Sciences, Shimane University

• Katagiri Shigeo

  Faculty Of Life And Environmental Science Shimane University

• Katagiri Shigeo

  Faculty Of Life And Environmental Sciences Shimane University

• Kaneko Nobihiro

  Faculty Of Life And Environmental Sciences Shimane University

関連論文

• Stream Water Chemistry of University Forests over Japan
• Use of foliar ^15N and ^13C abundance to evaluate effects of microbiotic crust on nitrogen and water utilization in Pinus massoniana in deteriorated pine stands of south China
• Sprouting traits and population structure of co-occurring Castanopsis species in an evergreen broad-leaved forest in southern China
• Wood Anatomy of Tamarix austromongolica and T. chinensis from an Ecological Perspective
• Nutrient dynamics and lignocellulose degradation in decomposing Quercus serrata leaf litter
• Comparison of Field and Laboratory Microcosm Methods on the Mass Loss of Quercus serrata and Pinus densiflora Leaf Litter
• Nutrient Dynamics in Decomposing Forest Leaf Litter : A Comparison of Field and Laboratory Microcosm Approach

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