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| Stoichiometry characteristics of carbon, nitrogen, phosphorus and anaerobic carbon decomposition of wetland soil of different texture. |
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Abstract To clarify the stoichiometry characteristics of carbon, nitrogen, phosphorus and anaerobic carbon decomposition of wetland soil of different texture, the stoichiometry characteristics of carbon, nitrogen, phosphorus and anaerobic carbon decomposition of soil of two texture (loam and sandy soil) under Phragmites australis and Scirpus triqueter stands in Minjiang River estuary were analyzed. Loam carbon content was 14.61 mg/g, nitrogen was 1.01 mg/g and phosphorus was 0.64 mg/g,which were higer than that of sandy soil carbon(9.02 mg/g), nitrogen (0.16 mg/g) and phosphorus(0.42 mg/g).Averaged C/N ratios of loam was lower than sandy soil and C/P, N/P ratios were higer than sandy soil.The averaged methane production potential of 0~40 cm loam and sandy soil were 0.0072, 0.0019μg/(g·d) and carbon dioxide were 33.5134, 4.9239μg/(g·d), respectively.The potentials of two kinds of carbon decomposition production from loam were all higher than that of sandy soil. The stoichiometry characteristics of carbon, nitrogen, phosphorus had a preferable indication for anaerobic carbon decomposition.
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Received: 25 February 2010
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