Effects of mulching management on soil and foliar C N and P stoichiometry in bamboo (Phyllostachys violascens) plantations

Li Y., . and Chen S., . and Zhuang M., . and Guo Z., . and Yang Q., . Effects of mulching management on soil and foliar C N and P stoichiometry in bamboo (Phyllostachys violascens) plantations. pp. 572-580. ISSN 0128-1283

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.

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Abstract

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.

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Item Type:	Article
AGROVOC Term:	Degradation
AGROVOC Term:	Soil acidity
AGROVOC Term:	Nutrients
AGROVOC Term:	Phyllostachys
AGROVOC Term:	Rice straw
AGROVOC Term:	Mulching
AGROVOC Term:	Chaff
AGROVOC Term:	Carbon
AGROVOC Term:	Nitrogen
AGROVOC Term:	Phosphorus
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21327

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