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

Z Guo, S Chen, Q Yang, Y Li and M Zhuang
Journal of Tropical Forest Science
Vol. 26, No. 4 (October 2014), pp. 572-580
Stable URL: http://www.jstor.org/stable/43150943
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
EFFECTS OF MULCHING MANAGEMENT ON SOIL AND FOLIAR C, N AND P STOICHIOMETRY IN BAMBOO "(PHYLLOSTACHYS VIOLASCENS)" PLANTATIONS
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Abstract

Mulching with rice straw chaff in bamboo (Phyllostachys violascens) plantations for early shooting and high profit resulted in 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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