| 引用本文: | 曾巾,杨柳燕,肖琳,尹大强,秦伯强.湖泊氮素生物地球化学循环及微生物的作用.湖泊科学,2007,19(4):382-389. DOI:10.18307/2007.0405 |
| ZENG Jin,YANG Liuyan,XIAO Lin,YIN Daqiang,QIN Boqiang.Biogeochemical cycling of nitrogen in lakes and the role of microorganisms in conversion of nitrogen compounds. J. Lake Sci.2007,19(4):382-389. DOI:10.18307/2007.0405 |
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| 摘要: |
| 氮素是影响湖泊富营养化的关键元素之一, 对湖泊中氮素生物地球化学循环整个过程进行全面的了解, 有利于对湖泊富营养化进行控制和治理。本文综述了湖泊生态系统(特别是富营养化湖泊)中氮素的输入、输出及其在沉积物-水界面的迁移转化规律, 着重分析和比较了藻型湖泊和草型湖泊的不同食物链中的氮紊营养循环过程, 重点讨论了微生物参与的硝化作用、反硝化作用、生物固氮和厌氧氨氧化等过程的最新研究进展, 并对氮循环相关的研究方法和技术进行了小结。最后指出当前国内外研究中亟待解决的问题, 并对湖泊氮循环今后的研究方向提出了建议。 |
| 关键词: 湖泊 氮素 生物地球化学循环 微生物 |
| DOI：10.18307/2007.0405 |
| 分类号: |
| 基金项目:"973"项目湖泊富营养化过程与蓝藻水华暴发机理研究(2002CB412307);国家重大水环境专项(2002AA601011)共同资助 |
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| Biogeochemical cycling of nitrogen in lakes and the role of microorganisms in conversion of nitrogen compounds |
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ZENG Jin1, YANG Liuyan1, XIAO Lin1, YIN Daqiang1, QIN Boqiang2
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1.State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, P. R. China;2.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences t Nanjing 210008, P. R. China
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| Abstract: |
| It is generally considered that nitrogen is one of the major factors regulating the trophic status of lakes, and the biogeochemical cycling of nitrogen serves the most important function in lake systems. Lakes often receive large anthropogenic inputs of nitrogen that cause eutrophication, and the exchange of nitrogen-compounds between sediment and water has a profound effect in all kinds of lakes. Such increased nutrient loading promotes the growth of phytoplankton while rooted plants and benthic are suppressed due to reduced light availability, the transfer of the nitrogen through the food chains in algal lake and macrophytic lake is different accordingly. Meanwhile, in this review progresses made on the processes such as nitrification, denilrification, nitrogen fixation and anammox (anaerobic ammonium oxidation) are emphasized. Methods and techniques applied in the research of biogeochemical cycling of nitrogen are also summarized, and the development of molecular techniques has contributed enormously to the rapid recent progress in the field. Current insufficiencies are pointed out and future directions are recommended in the end. |
| Key words: Lake nitrogen biogeochemical cycling microorganisms |
