Effects of overlying water aeration on phosphorus fractions and alkaline phosphatase activity in surface sediment

查看全文 作　　者：Jianjun [1,2]Chen;Shaoyong [2]Lu;Yikun [3]Zhao;Wei [2,3]Wang;Minsheng [1]Huang

机构地区：[1]School of Resource and Environmental Sciences, East China Normal University, Shanghai 200062, China;[2]State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;[3]Civil and Environment Engineering School, University of Science & Technology Beijing, Beijing 100083, China

出　　处：《Journal of Environmental Sciences》索引2011年第23卷第2期,共6页

基　　金：supported by the National Major Science and Technology Project for Water Pollution Control and Management(No. 2008ZX07101-001,2009ZX07101-009) 摘　　要：Microbial activity may influence phosphorus (P) deposit and release at the water sediment interface.The properties of DO (dissolved oxygen),pH,P fractions (TP,Ca-P,Fe-P,OP,IP),and APA (alkaline phosphatase activity) at the water sediment interface were measured to investigate microbial activity variations in surface sediment under conditions of two-month intermittent aeration in overlying water.Results showed that DO and TP of overlying water increased rapidly in the first week and then decreased gradually after 15 day of intermittent aeration.Microorganism metabolism in surface sediment increased pH and decreased DO and TP in the overlying water.After two-month intermittent aeration,APA and OP from surface sediment (0-2 cm) were both significantly higher than those from bottom sediment (6-8 cm) (p < 0.05),and surface sediment Fe-P was transferred to OP during the course of microorganism reproduction on the surface sediment.These results suggest that microbial activity and microorganism biomass from the surface sediment were higher than those from bottom sediment after two-month intermittent aeration in the overlying water. 关键词：碱性磷酸酶活性间歇曝气地表水磷含量表层沉积物微生物活动沉积物界面泥沙

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Effects of overlying water aeration on phosphorus fractions and alkaline phosphatase activity in surface sediment

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