文献类型：期刊文献

英文题名：EFFECTS OF MULCHING MANAGEMENT ON SOIL AND FOLIAR C, N AND P STOICHIOMETRY IN BAMBOO (PHYLLOSTACHYS VIOLASCENS) PLANTATIONS

作者：Guo, Z.[1] Chen, S.[1] Yang, Q.[1] Li, Y.[1] Zhuang, M.[1]

第一作者：Guo, Z.

通信作者：Guo, Z[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang Cty 311400, Zhejiang, Peoples R China

年份：2014

卷号：26

期号：4

起止页码：572-580

外文期刊名：JOURNAL OF TROPICAL FOREST SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000344836500014)】；

基金：We sincerely thank ME Reynolds from the University of Massachusetts, Amherst for proofreading the manuscript. This research was financially supported by the Forest Development Project of the Zhejiang Provincial Forestry Administration (No. 2011B01), Zhejiang Provincial Institute Cooperative Projects (No. 2013SY01) and the Natural Science Foundation of Zhejiang Province (No. LY13C160001).

语种：英文

外文关键词：Stand degradation; P limitation; soil acidification; nutrient imbalance

摘要：Mulching with rice straw and chaff in bamboo (Phyllostachys violascens) plantations for early shooting and high profit resulted in stand degradation in Zhejiang, China. The present study explored the possible mechanisms of degradation by analysing the effects of intensive mulching on soil and foliar carbon (C), nitrogen (N), phosphorous (P) stoichiometry in bamboo plantations. Results showed that mulching for 3 and 6 years increased soil C, N, P and the ratios of C:P and N:P but decreased soil pH. Mulching decreased foliar C, N and P but increased the C:N, C:P and N:P ratios. Foliar N:P ratio had positive correlation with soil P and pH and negative correlation with soil N:P and C:P ratios. It appeared that changes in soil C, N and P stoichiometry caused by long-term mulching management resulted in enhanced function of P as the limiting factor and soil acidification. Therefore, bamboo stand degradation caused by mulching management may cause imbalance in the relationship between C, N and P, inhibit absorption of N and P by roots as well as decrease foliar C assimilation capacity.