Influence of moisture on the stability of soil organic matter and plant residues

摘要

The effect of three levels of soil moistening on the organic matter mineralization was assessed for three arable soils and wheat straw in the course of a 150-day-long incubation experiment. It was found that the intensity of the organic matter mineralization increased in parallel to soil moistening in the podzolized chernozem and dark-chestnut soil and remained stable in the gray forest soil, which was explained by the low content of easily mineralizable fractions of active organic matter in the latter soil. The mineralization of wheat straw depended on the soil moistening rather than on soil properties.