文献类型: 外文期刊
作者: Zhang, Yingying 1 ; Zhang, Zhiyong 1 ; Wang, Zhi 1 ; Liu, Haiqin 1 ; Wen, Xuezheng 1 ; Qin, Hongjie 1 ; Yan, Shaohua 1 ;
作者机构: 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm Sci, 50 Zhong Ling St, Nanjing 210014, Jiangsu, Peoples R China
2.Arizona State Univ, Biodesign Inst, 1001 South McAllister Ave, Tempe, AZ 85287 USA
关键词: Bioremediation;Eutrophication;Water hyacinths;Nitrogen;Phosphorus
期刊名称:WORLD ENVIRONMENTAL AND WATER RESOURCES CONGRESS 2016: WATERSHED MANAGEMENT, IRRIGATION AND DRAINAGE, AND WATER RESOURCES PLANNING AND MANAGEMENT
ISSN:
年卷期: 2016 年
页码:
收录情况: SCI
摘要: A bioremediation project was carried out in an open ultra-eutrophic lake, Lake Caohai in 2011 to determine whether large-scale cultivation of water hyacinths could improve water quality. The coverage of water hyacinths reached an area of 4.30 km2 (211.0 kt) which is approximately 50% of lake area by November. After the controlled growth of water hyacinths, the concentrations of TN, NH4+-N, and TP decreased significantly in May and remained relatively stable from June to November. The abundance of DO and the decrease of NH4+-N concentrations can be benefit for fishes and aquatic ecosystems, and the decrease of TP concentrations may contribute to the reduction of phytoplantkton biomass. Assimilation by water hyacinths accounted for 64% of the removed N and 108% of the removed P, with the extra P coming from the sediments. The results demonstrated that large-scale water hyacinths can successfully reduce nitrogen and phosphorus loads in a eutrophic lake.
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