徐州城市绿地表层土壤酶活性及其影响因素  

Soil enzyme activity of urban green land in Xuzhou city and its influencing factors

作　　者：司志国[1,2] 俞小鹏[1] 白玉杰[1] 俞元春[1,3] 关庆伟[1] 无 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037 [2]河南职业技术学院,河南郑州450046 [3]土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,江苏南京210008 [4]徐州市市政园林局,江苏徐州221018

出　　处：《中南林业科技大学学报》2013年第2期73-76,80,共5页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目(31270664);土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)开放基金(Y052010006);徐州市国家生态园林城市创建项目(XCT2010-011);江苏省普通高校研究生科研创新计划资助项目(CXZZ12-0541);江苏高校优势学科建设工程资助项目

摘　　要：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 collected from Xuzhou different functional areas in 0 to 20 cm and 20 to 40 cm soil layers were determined.The correlation between soil enzyme activity and physicochemical property was studied.The results show that total porosity,capillary porosity,field moisture capacity,field moisture capacity and pH didn’t have effects on soil enzyme activity of urban green space,the soil density obviously inhibited the activity of phosphatase and sucrose enzyme,the non-capillary porosity obviously promotee the activity of phosphatase,catalase and sucrose enzyme,and the soil’s natural water content had an effect on the activity of peroxidase;the available phosphorus obviously suppressed the activity of catalase and peroxidase,available phosphorus obviously raised the activity of urease and peroxidase,available nitrogen and organic matter had an obvious effect on Urease,phosphatase and sucrose enzyme,cation exchange capacity had obvious effects on phosphatase and sucrose enzyme;the urease were obviously negative correlated with peroxidase,obviously positive correlated with sucrose enzyme and phosphatase,catalase was obviously positive correlated with phosphatase,and obviously negative correlated with polyphenol oxidase;thr phosphatase was obviously correlated with sucrose enzyme.The findings show that soil physical and chemical properties were correlated with soil enzyme activity and the soil enzyme activities themselves were correlated each other at different degree,and it means that soil physical and chemical properties has a certain effect on soil enzyme,thus soil enzyme as soil quality index is feasible.

关 键 词：城市绿地 表层土壤 酶活性 相关性 徐州市 

分 类 号：S731[农业科学—林学]