Ecological feedback significance of polyphenols in organic layer of forest soil

Abstract

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 Nmineralization had no significant correlation with total polyphenols, organic Cand C/Nratio, but had a significant negative correlation with condensed tannin. Polyphenols concentration also positively correlated with 1 mol稬^-1 KCl extractable Cand 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.

Key words: Forest soil, Polyphenols, Ecological regulation, Secondary mestabolite, seasonal variation, Yangtze River Estuary., invertebrate, environmental factor, assemblage structure

CLC Number:

S714

ZHONG Zheke, WANG Renchao, JIANG Bo. Ecological feedback significance of polyphenols in organic layer of forest soil[J]. Chinese Journal of Applied Ecology, 2003, (3): 341-344.

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