不同碳氮比对辽河口湿地总氮去除的影响  

THE INFLUENCING OF DIFFERENT C/N RATIO ON TOTAL NITROGEN REMOVAL OF SEDIMENTS IN LIAOHE ESTUARY WETLANDS

作　　者：王纯杰[1,2] 白洁[2] 赵阳国[1,2] 董晓[1,2] 钟丽华[1,2] 姚泓名[1,2] 

机构地区：[1]中国海洋大学海洋环境与生态教育部重点试验室,山东青岛266100 [2]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《海洋湖沼通报》2012年第2期157-165,共9页Transactions of Oceanology and Limnology

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07208-009)资助

摘　　要：于2010年5月～10月采用现场模拟培养法探讨了辽河口芦苇湿地沉积物中的总氮去除效果,并分析了不同梯度C/N比(5∶1、10∶1、15∶1)对沉积物中总氮去除效果的影响。结果表明:在自然状态下,有植被芦苇湿地总氮去除率比无植被湿地高;当施加C/N因素后可以提高沉积物中总氮去除率,C/N比对裸滩湿地中氮的去除效果比芦苇湿地明显;在有植被芦苇湿地中C/N比为10时总氮去除率最高,而在无植被湿地中C/N比值为15时总氮去除率最高;8月份各实验组中总氮去除率最高。影响辽河口湿地沉积物脱氮效果主要环境因子还有温度、盐度、含水率和pH等。The Liaohe Estuary wetlands was studied through field culture experiments during the May to the October in 2010, the effects of different C/N ratios （5： 1, 10 ：1, and 15： 1） on TN （Total Nitrogen） removal rates of reed wetlands and naked wetlands were dis- cussed. It was found that the TN removal rate of reed wetlands was higher than naked wet- lands in natural state~ the C/N ratio significantly increased the TN removal rate, and this effect in naked wetlands is more remarkable than reeds wetlands The field experiment shows that TN removal rate increased in peak in August the TN removal rate is maximum in reed wetlands when the C/N ratio is 10 ： 1, while in naked wetlands the optimum C/N ra- tio is 15 ： 1. Based on field survey, the pH, moisture content, salinity, and temperature are the important factors that influencing TN removal rate.

关 键 词：碳氮比 沉积物 总氮去除率 影响因素 

分 类 号：P731[天文地球—海洋科学]