Response of soil saccharidase activities to free-air carbon dioxide enrichment (FACE) under rice-wheat rotation

Abstract

Abstract: This paper studied the effect of 200 μmol·mol^-1 CO₂ elevation on soil saccharidase activities and soil nutrient contents under rice wheat rotation.The results showed that under both wheat and rice planting,CO₂ elevation increased soil invertase activity.The elevated CO₂ significantly increased soil xylanase activity at the jointing,heading and ripening stages of wheat and at the heading and ripening stages of rice,and slightly decreased soil cellulase activity.Correlation analysis showed that there was a significantly linear positive relationship between soil alkali hydrolyzed nitrogen and soil invertase activity.

Key words: Free-air CO₂ enrichment(FACE), Soil, Invertase, Xylanase, Cellulase, Enzyme activity

CLC Number:

S154.2

ZHANG Lili, ZHANG Yulan, CHEN Lijun, WU Zhijie . Response of soil saccharidase activities to free-air carbon dioxide enrichment (FACE) under rice-wheat rotation[J]. Chinese Journal of Applied Ecology, 2004, (6): 1019-1024.

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