李杨杨,陈友媛,孙萍,陈广琳

• 1:中国海洋大学环境科学与工程学院
• 2:中国海洋大学海洋环境与生态教育部重点实验室

摘要(Abstract)：

滨海河口区水体盐碱含量高,生态景观萧条,亟需筛选既能耐盐碱又能有效去除氮磷的植物。采用实验室水培实验,分析黑藻(Hydrillaverticillata)在盐碱混合胁迫下的生长状况、生理响应以及对盐碱水体中氮磷去除效果。结果表明:黑藻在pH=7、pH=8和pH=9胁迫下,能耐受的最高盐度分别为9、6和3。在其耐盐碱范围内,植株长势良好,含水率与对照组相比降幅在5%以内,酶活性稳定,在盐度小于6刺激下叶绿素含量略有升高;在其盐碱耐受范围外,黑藻细胞膜透性变大,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性下降,渗透物质调节能力差,脯氨酸与Na+含量最高可达对照组的4.67和9.13倍,此时黑藻生长受阻,对氮、磷的净化效果较差。

关键词(KeyWords)： 黑藻;盐碱混合胁迫;生理响应;氮磷净化;滨海河口区

Abstract:

Keywords:

基金项目(Foundation): 青岛市科技攻关项目(12-4-1-58-HY);; 青岛市政府采购项目(T-20150205-018)资助~~

作者(Author): 李杨杨,陈友媛,孙萍,陈广琳

DOI: 10.16441/j.cnki.hdxb.20160140

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