湿地微生物在城市湿地氮循环系统的效应研究  

Contributions of microorganisms to nitrogen cycle of urban wetland.

作　　者：李春艳[1] 王继华[1] 华德尊[1] 任佳[1] 

机构地区：[1]哈尔滨师范大学环境科学研究所

出　　处：《北京林业大学学报》2008年第S1期278-281,共4页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(30470340);黑龙江省自然科学基金项目(G200601);哈尔滨市科技局优秀学科带头人项目(2007IFXX5030)

摘　　要：城市湿地是城市生态系统的重要组成部分,微生物作为城市湿地生态系统中的重要组成成分,是湿地污水处理的主要因子,在降解污染中起着不可替代的作用。该文以哈尔滨松北区城市湿地为研究对象,通过试验对研究区域的湿地微生物种类进行初步鉴定,发现有5种微生物具有硝酸盐还原活性,为硝化菌类;分析了城市湿地氮循环系统中微生物效应,湿地微生物在城市湿地氮循环系统中对氮污染的优化控制十分重要,指出在城市湿地氮循环系统中微生物的硝化和反硝化作用是氮降解的主要过程,同时厌氧氨氧化反应存在着减缓氮污染的可能性。松北湿地的其余菌株有待于继续进行鉴定,以便深入研究微生物对城市生态系统的作用。Urban wetland is an important part in urban ecosystem.Microorganisms,as an integral component of urban wetland ecosystems,are the main factor of wetlands sewage treatment,and play an irreplaceable role in the pollution degradation.In this study,the authors took urban wetland of Harbin City on north shore of Songhua River as the object,identified microorganisms types through experiments,and found five microorganisms types being nitrifying bacteria.Then the effects of microorganisms on nitrogen cycle of urban wetland were analyzed.It is clear that microorganisms can contribute to controlling nitrogen pollution. Research also indicates that nitrification and anti-nitrification reactions are main process during the degradation of nitrogen compounds,and ammonium oxidation has the potential to reduce nitrogen pollution.We will continue identifying wetland bacterial strains to further study the effect of microorganisms on city ecosystem.

关 键 词：城市湿地 湿地微生物 氮循环 菌株 硝化和反硝化作用 厌氧氨氧化反应 

分 类 号：X172[环境科学与工程—环境科学]