Based on the continuous measurement of soil respiration in a maize field in Northeast China during maize growth seasons in 2004 and 2005, the temporal variation of soil respiration was studied, with the effects of heat and water factors, soil properties, root biomass, and leaf area index (LAI) analyzed. The diurnal variation of soil respiration showed an asymmetric pattern, with the minimum appeared at 6:00-7:00 and the maximum at 13:00. There was a great fluctuation of soil respiration during the growth se...
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