Through indoor analysis and incubation of soil samples collected from fields in the Yangtze Delta region, differences in soil organic carbon mineralization and enzyme activities between soils different in duration of vegetable plantation were observed. Findings showed that NO3--N content in the soils increased significantly with the duration because of application of large amounts of chemical fertilizer or/and organic manure. Mineralization rate of soil organic carbon, during the early period of incubation, decreased with the increase in duration. Activities of soil urease and invertase also decreased with the increase in duration, while soil phosphatase increased owing to phosphorus accumulation in the soil from application of large amounts of phosphate fertilizer. Soil phosphatase and invertase activities were significantly correlated to soil organic carbon and total nitrogen content. Soil enzyme activity varied obviously with duration of vegetable plantation and could be cited as a sensitive indicator of changes in soil quality.
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路磊,李忠佩,车玉萍.不同利用年限菜地土壤有机碳矿化动态和酶活性变化[J].土壤,2006,38(4):429-434. LU Lei, LI Zhong-pei, CHE Yu-ping. Soil Organic Carbon Mineralization and Enzyme Activity in Soils Different in Duration of Vegetable Plantation[J]. Soils,2006,38(4):429-434