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采集徐州市不同功能区0～20 cm和20～40 cm土壤样品进行室内分析,对土壤酶活性与理化性质的相关性进行了研究。结果表明,总孔隙度、毛管空隙度、田间持水量及pH值对城市绿地土壤酶活性没有影响,土壤密度能显著抑制磷酸酶及蔗糖酶的活性,非毛管空隙度能显著提高磷酸酶、过氧化氢酶及蔗糖酶的活性,自然含水量影响过氧化氢酶活性;速效磷能显著抑制过氧化氢酶和过氧化物酶的活性,速效钾能显著提高脲酶和过氧化物酶的活性,水解性氮和有机质对脲酶、磷酸酶及蔗糖酶有显著影响,阳离子交换量对磷酸酶和蔗糖酶有显著影响;脲酶和过氧化物酶显著负相关,与蔗糖酶、磷酸酶呈极显著正相关,过氧化氢酶和磷酸酶呈显著正相关,与多酚氧化酶呈极显著负相关;磷酸酶与蔗糖酶之间呈极显著相关关系。本研究结果表明,土壤理化性质对土壤酶活性及土壤酶活性之间均有不同程度的相关性,说明土壤理化性质对土壤酶有一定的影响,土壤酶作为评价土壤质量指标是可行的。
The soil samples from 0 ~ 20 cm and 20 ~ 40 cm in different functional areas of Xuzhou were collected for indoor analysis, and the correlation between soil enzyme activities and physico-chemical properties was studied. The results showed that total porosity, capillary porosity, field water holding capacity and pH had no effect on soil enzyme activity in urban green space. Soil density significantly inhibited the activity of phosphatase and sucrase, while non-capillary porosity increased phosphatase Catalase and sucrase activity, the natural water content of catalase activity; available phosphorus can significantly inhibit catalase and peroxidase activity, potassium can significantly improve the activity of urease and peroxidase, Hydrolyzable nitrogen and organic matter had significant effects on urease, phosphatase and sucrase, and the amount of cation exchange had a significant effect on phosphatase and sucrase; urease and peroxidase were significantly negatively correlated with sucrase and phosphatase Correlation, catalase and phosphatase showed a significant positive correlation, and polyphenol oxidase showed a significant negative correlation; phosphatase and sucrase showed a significant correlation between. The results showed that soil physical and chemical properties have different degrees of correlation between soil enzyme activity and soil enzyme activity, indicating soil physical and chemical properties have a certain impact on soil enzymes, soil enzyme as the evaluation of soil quality indicators is feasible.