期刊
ECOLOGICAL RESEARCH
卷 23, 期 1, 页码 51-55出版社
SPRINGER JAPAN KK
DOI: 10.1007/s11284-007-0336-5
关键词
beech; carbon-13 nuclear magnetic resonance; stable carbon isotope ratio; discrimination; dogwood
类别
We studied the dynamics of the stable C isotope ratio (delta C-13) of Swida controversa and Fagus crenata leaf litter during decomposition for 35 months with reference to the relative enrichment of the residue by lignin fraction-derived C. The study was carried out on upper and lower parts of a forest slope in a cool temperate forest in Japan. The enrichment of lignin fraction-C was associated with a decrease in the delta C-13 of S. controversa residue. The decrease in delta C-13 was greater at the lower than the upper site for S. controversa. In contrast, the relative increase in lignin fractions in F. crenata residue was not associated with the changes of delta C-13. C-13 nuclear magnetic resonance analysis, which revealed the relative decrease in alkyl-C and O-alkyl-C and the relative increase in aromatic-C and carbonyl-C, provided further evidence for the contribution of the selective preservation of lignin of plant origin to the increase in the lignin fraction.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据