Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

Geng Xiaoyuan Geng, J. Pastor, B. Dewey

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Decay and nitrogen dynamics of leaf litter from four tree species in old-growth forests were measured and compared in a litter-bag experiment. Leaf litter decay in both China and Wisconsin decreased in the order Acer > Populus > Quercus > Pinus and was negatively correlated with initial lignin content. Decay was also correlated with other chemical properties depending on locale. In contrast, N-immobilization kinetics were not correlated with litter chemistry or comparable between congeners. Principal component analysis showed that almost half the total variation in litter decay is explained by grouping congeneric species according to litter quality. In northern mixed hardwood-conifer forests, generic similarity implies functional similarity in decomposition and nutrient cycling. -from Authors

Original languageEnglish (US)
Pages (from-to)693-699
Number of pages7
JournalCanadian Journal of Botany
Volume71
Issue number5
StatePublished - Jan 1 1993
Externally publishedYes

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