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题名: Nitrogen removal from Lake Caohai, a typical ultra-eutrophic lake in China with large scale confined growth of Eichhornia crassipes
作者: Wang, Zhi1, 2; Zhang, Zhiyong1; Zhang, Yingying1; Zhang, Jungian1, 3; Yan, Shaohua1; Guo, Junyao1
通讯作者: Yan, SH (reprint author), Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China.
关键词: Eutrophication ; Lake ; Nitrogen ; Water hyacinth
刊名: CHEMOSPHERE
发表日期: 2013-06-01
DOI: 10.1016/j.chemosphere.2013.03.014
卷: 92, 期:2, 页:177-183
收录类别: SCI
文章类型: Article
部门归属: [Wang, Zhi ; Zhang, Zhiyong ; Zhang, Yingying ; Zhang, Jungian ; Yan, Shaohua ; Guo, Junyao] Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China ; [Wang, Zhi] Chinese Acad Sci, Inst Geodesy & Geophys, Key Lab Environm & Disaster Monitoring & Evaluat, Wuhan 430077, Peoples R China ; [Zhang, Jungian] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Ministry of Science and Technology of China [2012CB426503]; National Science and Technology Support Program of China [NSF41201533]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: An ecological engineering project, with large-scale utilization of Eichhornia crassipes (coverage area similar to 4.3 km(2)) for pollution control in an open ultra-eutrophic lake, Lake Caohai, was first implemented in 2011. In this study, the efficiency of N removal using E. crassipes in the lake was evaluated. After E. crassipes was planted in May, the concentrations of TN and NH4+ in Waicaohai, the main part of Lake Caohai, were significantly decreased within a month, and then, remained stable from June to November, 2011, although the lake had received waste water continuously from river inlets. The average concentrations of TN, NH4+-N and NO3--N in water of Xi Yuan Channel (outlet) were reduced to 33, 0.02 and 0.8 mg L-1 from 13.8, 4.7 and 5.8 mg L-1 in river inlets, respectively. The DO levels in 2011 were not decreased, but concentrations of TN and NH4+ were significantly reduced when compared with the historical data from 2007 in the lake. Assimilation by E. crassipes was the main pathway to remove N in Lake Caohai, accounted for 52% of the total N influent (936 t), or 64% of the removed N (761 t). These results indicated that large scale utilization of E. crassipes for removal of N in the eutrophic lake is practicable. (C) 2013 Elsevier Ltd. All rights reserved.
英文摘要: An ecological engineering project, with large-scale utilization of Eichhornia crassipes (coverage area similar to 4.3 km(2)) for pollution control in an open ultra-eutrophic lake, Lake Caohai, was first implemented in 2011. In this study, the efficiency of N removal using E. crassipes in the lake was evaluated. After E. crassipes was planted in May, the concentrations of TN and NH4+ in Waicaohai, the main part of Lake Caohai, were significantly decreased within a month, and then, remained stable from June to November, 2011, although the lake had received waste water continuously from river inlets. The average concentrations of TN, NH4+-N and NO3--N in water of Xi Yuan Channel (outlet) were reduced to 33, 0.02 and 0.8 mg L-1 from 13.8, 4.7 and 5.8 mg L-1 in river inlets, respectively. The DO levels in 2011 were not decreased, but concentrations of TN and NH4+ were significantly reduced when compared with the historical data from 2007 in the lake. Assimilation by E. crassipes was the main pathway to remove N in Lake Caohai, accounted for 52% of the total N influent (936 t), or 64% of the removed N (761 t). These results indicated that large scale utilization of E. crassipes for removal of N in the eutrophic lake is practicable. (C) 2013 Elsevier Ltd. All rights reserved.
关键词[WOS]: WATER HYACINTH ; AQUATIC MACROPHYTES ; FRESH-WATER ; PHOSPHORUS ; MARINE ; ZOOPLANKTON ; ECOSYSTEMS ; WETLANDS ; QUALITY ; DIANCHI
语种: 英语
WOS记录号: WOS:000319239800003
ISSN号: 0045-6535
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19281
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Geodesy & Geophys, Key Lab Environm & Disaster Monitoring & Evaluat, Wuhan 430077, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China

Recommended Citation:
Wang, Z; Zhang, ZY; Zhang, YY; Zhang, JG; Yan, SH; Guo, JY.Nitrogen removal from Lake Caohai, a typical ultra-eutrophic lake in China with large scale confined growth of Eichhornia crassipes,CHEMOSPHERE,2013,92(2):177-183
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