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东湖沉积物中dNaR活性和硝酸盐还原菌的垂向分布
Authors
刘剑彤
敖鸿毅
方涛
李小平
Publication date
1 January 2010
Publisher
Abstract
测定了武汉东湖污染负荷不同的3个点位(污染负荷为3号>2号>1号)柱状沉积物中异化性硝酸还原酶(dNaR)活性以及硝酸盐还原菌数量、TOC、TN、NO3--N的垂向变化,分析了dNaR活性与硝酸盐还原菌数量、TOC、TN、NO3--N的相关性.结果表明,不同点位沉积物中dNaR活性不同,污染负荷最高的3号点位dNaR活性最高,污染负荷最低的1号点活性最低.不同点位沉积物中dNaR活性在垂向分布上具有相似特征:0~15cm沉积物中活性较大,15cm以下随着深度的增加,酶活性迅速降低.硝酸盐还原菌数量在垂向
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/14354
Last time updated on 15/03/2018