title: [Ecological feedback significance of polyphenols in organic layer of forest soil].
abstract: By comparing polyphenols (total polyphenols and condensed tannin) and other chemical and biological properties in soil organic layers during the transformation and regeneration of pure mature spruce stand in middle Europe, the functions of polyphenols in forest ecosystem were approached. The results showed that polyphenols concentration had a significant positive correlation with effective cation exchange capacity (ECEC), but no relation with organic C. The net N mineralization had no significant correlation with total polyphenols, organic C and C/N ratio, but had a significant negative correlation with condensed tannin. Polyphenols concentration also positively correlated with 1 mol.L.-1 KCl extractable C and N. It is suggest that although the polyphenols have no obvious physiological function in tree metabolism, it should be paid attention to its ecological feedback significance in the whole ecosystem.
authors.affiliation: College of Environment and Resources Science, Zhejiang University, Hangzhou 320029, China. zheke@forst.tu-dresden.de
authors.forename: Zheke
authors.initials: Z
authors.lastname: Zhong
authors.forename: Renchao
authors.initials: R
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Jiang
mesh_terms: D004463:Ecology; D005419:Flavonoids / Q000032:analysis*; D008903:Minerals / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D010636:Phenols / Q000032:analysis*; D059808:Polyphenols; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000378:metabolism*
chemical_list: D005419:Flavonoids; D008903:Minerals; D010636:Phenols; D059808:Polyphenols; D012987:Soil; D009584:Nitrogen