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题名: Total, chemical, and biological oxygen consumption of the sediments in the Ziya River watershed, China
作者: Rong, Nan; Shan, Baoqing
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期: 2016-07
卷号: 23, 期号:13, 页码:13438-13447
关键词: Sediment oxygen demand ; Fractionation ; Chemical SOD ; Biological SOD ; Contribution ; Ziya River watershed
DOI: 10.1007/s11356-016-6541-4
部门归属: 环境水质学国家重点实验室
英文摘要: Sediment oxygen demand (SOD) is a critical dissolved oxygen (DO) sink in many rivers. Understanding the relative contributions of the biological and chemical components of SOD would improve our knowledge of the potential environmental harm SOD could cause and allow appropriate management systems to be developed. A various inhibitors addition technique was conducted to measure the total, chemical, and biological SOD of sediment samples from 13 sites in the Ziya River watershed, a severely polluted and anoxic river system in the north of China. The results showed that the major component of SOD was chemical SOD due to iron predominate. The ferrous SOD accounted for 21.6-78.9 % of the total SOD and 33.26-96.79 % of the chemical SOD. Biological SOD represented 41.13 % of the overall SOD averagely. Sulfide SOD accounted for 1.78-45.71 % of the total SOD and it was the secondary predominate of the chemical SOD. Manganous SOD accounted for 1.2-16.6 % of the total SOD and it was insignificant at many sites. Only four kinds of benthos were collected in the Ziya River watershed, resulting from the low DO concentration in the sediment surface due to SOD. This study would be helpful for understanding and preventing the potential sediment oxygen depletion during river restoration.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36083
Appears in Collections:环境水质学国家重点实验室_期刊论文

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