摘要
碱性磷酸酶在磷的生物地球化学循环过程中发挥着重要作用.以傀儡湖为研究区域,对其水体中碱性磷酸酶活性(Alkaline phosphatase activity,APA)及其理化性质的时空分布进行分析.结果表明,傀儡湖水体APA呈时空异质性:河道较低,河口则易出现较高的APA;全湖的APA存在较强的季节性变化,冬季(1月)最低,变化范围为2.06-17.33nmol mL-1h-1;夏季(7月)最高,变化范围为5.78-13.52 nmol mL-1h-1.APA与环境因子相关性分析显示,APA与颗粒态有机氮浓度关系最为密切,与总氮含量的相关性其次,随后显著相关的因子为NO2--N,此外是NO3--N和NH4+-N.这一结果表明与氮元素有关的环境因子可能是影响APA的主要因素.
Alkaline phosphatase activity （APA） plays an important role in the biogeochemical cycling of phosphorus. The spatial-temporal distribution of APA and related environmental variables were studied in the Kuilei Lake. The research found significant seasonal and regional variations of APA in the water body, with lower APAs in outlet waters and higher in the estuarine. APAs were relatively low in winter （January）, ranging from 2.06 to 17.33 nmol mL ~ h-~, and high in summer （July）, ranging from 5.78 to 13.52 nmol . Correlation analyses indicated that APAs were significantly related to particulate organic nitrogen, total nitrogen and NO[-N. Other nitrogen forms （NO[-N and NH4＋-N） were also related, though not significantly. The results implied that the factors related to nitrogen are the primary factors affecting APAs. Fig 4, Ref39
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2013年第3期489-494,共6页
Chinese Journal of Applied and Environmental Biology
基金
国家自然科学基金项目(40903031)
江苏省自然科学基金项目(BK2010605)
中央高校基本科研业务费专项资金(JUSRP111A11)
水体污染控制与治理科技重大专项(2012ZX-07101-013-04)资助~~
关键词
傀儡湖
碱性磷酸酶
时空分布
影响因素
Kuilei Lake
alkaline phosphatase
spatial-temporal distribution
environmental variable
