We selected adjacent Deyeuxia angustifolia meadow and farmland cultivated 1,3,5,9,15,25 and 35 years, to study cultivation effects on soil biological properties and organic matter dynamics in the Sanjiang Plain in Northeast China.The results showed that cultivation resulted in decrease in the microbial biomass carbon (MBC), microbial quotient(MQ), and basal respiration (BR).While, metabolized quotient (qCO2), potential respiration/basal respiration(PR/BR), and PR/MBC ratios obviously increased with cultivation.Converting wetland soil into agriculture soil resulted in significant decline in carbon availability and efficiency of microbial populations in conserving C.There are clear relationships between soil microbial properties.The method evaluating more parameters simultaneously can provide complete and true information about the soil microorganisms and carbon dynamics.
ZHANG Jin-Bo, SONG Chang-Chun, YANG Wen-Yan
. Cultivation Effects on Soil Organic Carbon Dynamics in Sanjiang Plain, Northeast China[J]. SCIENTIA GEOGRAPHICA SINICA, 2006
, 26(3)
: 340
-344
.
DOI: 10.13249/j.cnki.sgs.2006.03.340
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