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汉阳两湖泊底泥酶活性和脂肪酸垂直分布特征
Authors
吴振斌
周巧红
姜丽娟
张丽萍
Publication date
1 January 2010
Publisher
Abstract
酶活性和脂肪酸是富营养化湖泊底泥重要的生化指标。研究以武汉市汉阳地区两个湖泊为对象,测定了其中的酶活性(比色法)和脂肪酸(温和碱性甲酯化方法)。结果表明:酸}生磷酸酶活性在表层和亚表层没有显著性差异p〉0.05),而脲酶表层酶活性显著高于亚表层,甚至在有些位点差异极显著(p〈0.0005);饱和直链脂肪酸(碳原子数〈19)占总脂肪酸比例为40.40%~47.85%,多不饱和脂肪酸比例为18.21%~25.08%,表层和亚表层之间差异不明(p〉0.05);单不饱和脂肪酸占总脂肪酸比例为19.60%~29.31%,饱和直链脂肪酸(碳原子数〉19)占总脂肪酸比例为6.47%-14.28%,表层和亚表层之间差异显著(p〈0.05)。碳原子数≥C24的长链脂肪酸比例很低,为1.57%-3.60%。上述研究结果在一定程度上获得了富营养化浅水湖泊底泥中酶活性和脂肪酸在垂直空间上的分布特征
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 25/11/2020