| 长江中下游湖泊沉积物酶活性及其与富营养化的关系 |
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| 引用本文： | 张宇,乌恩,李重祥,杨苏文,金相灿,廖剑宇,王圣瑞.长江中下游湖泊沉积物酶活性及其与富营养化的关系[J].应用与环境生物学报,2011(2):196-201. |
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| 作者姓名： | 张宇 乌恩 李重祥 杨苏文 金相灿 廖剑宇 王圣瑞 |
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| 作者单位： | 内蒙古农业大学生态环境学院;中国环境科学研究院湖泊创新基地/国家环境保护湖泊污染控制重点实验室;湖南农业大学资源环境学院; |
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| 基金项目： | 国家自然科学基金项目(Nos.40873079,40703017); 社会基础性工作项目(No.2006FY110600); 中央级公益性科研院所基本科研业务专项项目(No.2007KYYW27)联合资助~~ |
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| 摘 要： | 为揭示富营养化湖泊沉积物营养物分解合成过程的生物化学机制,研究了长江中下游6个浅水湖泊沉积物氮、磷、有机质和铵氮含量,水解酶、氧化还原酶活性,微生物种类与数量及之间的关系.结果表明:大通湖、珊珀湖、赛城湖和军山湖等养殖型湖泊,污染严重,其沉积物脲酶活性明显高于污染程度轻的大型湖泊鄱阳湖和洞庭湖,且与沉积物总氮(TN)、有机质(OM)含量呈极显著正相关(r=885,P<0.01;r=0.900,P<0.01);沉积物碱性磷酸酶(APA)活性与总磷(TP)含量呈极显著正相关(r=0.986,P<0.01).湖泊沉积物过氧化氢酶、多酚氧化酶与过氧化物酶活性变化趋势相近,分布状况与湖泊污染程度、人类活动干扰程度等紧密相连.湖泊沉积物微生物以细菌为主,放线菌次之,真菌最少.各湖泊氨化细菌数量差异较小,而反硝化细菌数量差异较大,反硝化细菌可能是导致该区域湖泊沉积物氮素累积的重要生物指示因子,可以作为反映湖泊富营养化程度的生物指示因子.
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| 关 键 词： | 湖泊沉积物 酶活性 微生物 富营养化 长江中下游 |
Enzyme Activity in Sediments and Its Relation with Eutrophication in the Lakes along the Yangtze River |
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| ZHANG Yu,WU En,LI Chongxiang,YANG Suwen,JIN Xiangcan,LIAO Jianyu, & WANG Shengrui.Enzyme Activity in Sediments and Its Relation with Eutrophication in the Lakes along the Yangtze River[J].Chinese Journal of Applied and Environmental Biology,2011(2):196-201. |
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| Authors: | ZHANG Yu WU En LI Chongxiang YANG Suwen JIN Xiangcan LIAO Jianyu & WANG Shengrui |
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| Institution: | ZHANG Yu1,2,WU En1,LI Chongxiang1,YANG Suwen2,JIN Xiangcan2,LIAO Jianyu2,3 & WANG Shengrui2(1College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot 010019,China)(2State Environmental Protection Key Laboratory For Lake Pollution Control,Research Center of Lake Environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)(3College of Resources and Environment,Hunan Agricultural University,Changsha 410128,China) |
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| Abstract: | To reveal the biochemical mechanism of decomposition and synthesis of the nutrients in eutrophic lakes,the relationships among the contents of nitrogen,phosphorus,organic matter and ammonium nitrogen,the activity of hydrolase and oxidoreductase,and the amounts of different microorganisms were studied in six shallow lakes along the Yangtze River.The results showed that 1) in the lakes seriously polluted by farming activities,such as the Datong Lake,Shanpo Lake and Saicheng Lake,the urease activity in sedimen... |
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| Keywords: | lake sediment enzyme activity microorganism eutrophication the Yangtze RiverCLC X524 |
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