| 江湖关系变化对鄱阳湖沉积物重金属分布及生态风险影响 |
| |
| 引用本文： | 刘婉清,倪兆奎,吴志强,王圣瑞,曾清如.江湖关系变化对鄱阳湖沉积物重金属分布及生态风险影响[J].环境科学,2014,35(5):1750-1758. |
| |
| 作者姓名： | 刘婉清 倪兆奎 吴志强 王圣瑞 曾清如 |
| |
| 作者单位： | 湖南农业大学资源环境学院,长沙 410128;中国环境科学研究院,环境基准与风险评估国家重点实验室,北京 100012;中国环境科学研究院国家环境保护湖泊污染控制重点实验室,湖泊生态环境创新基地,北京 100012;中国环境科学研究院,环境基准与风险评估国家重点实验室,北京 100012;中国环境科学研究院国家环境保护湖泊污染控制重点实验室,湖泊生态环境创新基地,北京 100012;中国环境科学研究院,环境基准与风险评估国家重点实验室,北京 100012;中国环境科学研究院国家环境保护湖泊污染控制重点实验室,湖泊生态环境创新基地,北京 100012;南昌大学环境与化学工程学院,南昌 330031;中国环境科学研究院,环境基准与风险评估国家重点实验室,北京 100012;中国环境科学研究院国家环境保护湖泊污染控制重点实验室,湖泊生态环境创新基地,北京 100012;湖南农业大学资源环境学院,长沙 410128 |
| |
| 基金项目： | 国家重点基础研究发展规划（973）项目（2012CB417004）；国家自然科学基金项目（40873079）；国家社会基础性工作项目（2006FY110600） |
| |
| 摘 要： | 选取不同水情下鄱阳湖表层沉积物,研究江湖关系变化对其重金属Cu、Pb、Zn、Cr和Cd的分布及生态风险影响,结果表明:①鄱阳湖沉积物受不同程度重金属污染,入湖河流颗粒物输入是鄱阳湖沉积物重金属的主要来源,其中Cu和Pb是主要污染因子.各重金属污染程度排列次序为:Cu>Pb>Zn>Cr>Cd,丰水期沉积物各重金属含量的变化范围为Cu 13.1~108.1 mg·kg-1、Pb 37~119.1 mg·kg-1、Zn 29.9~129.9 mg·kg-1、Cr 13.3~98.6 mg·kg-1和Cd 0.19~2.77 mg·kg-1;枯水期为Cu 3.05~69.7 mg·kg-1、Pb 27.5~105 mg·kg-1、Zn 18.8~95.4 mg·kg-1、Cr 7.34~70 mg·kg-1与Cd 0.033~0.406mg·kg-1;高值区域集中在"五河"尾闾水域和鄱阳湖入长江的湖口水域.②丰水期鄱阳湖沉积物重金属高风险区主要集中在五河尾闾区;枯水期,沉积物重金属高风险区面积扩大,不仅局限于五河尾闾区,且向北部进一步扩散,湖口区域的风险较大,但全湖生态风险总体上丰水期大于枯水期.③随着鄱阳湖与长江江湖关系进一步发生变化,丰水期水位抬高且维系时间缩短、枯水期提前、湖泊由"湖相"至"河相"的转变进程加快、河流特性增强,将导致全湖沉积物重金属生态风险相应降低,但高风险区域的范围进一步向北扩大.
|
| 关 键 词： | 江湖关系变化 鄱阳湖 沉积物 重金属 生态风险 |
| 收稿时间： | 9/4/2013 12:00:00 AM |
| 修稿时间： | 2013/10/14 0:00:00 |
Influence of the River-lake Relation Change on the Distribution of Heavy Metal and Ecological Risk Assessment in the Surface Sediment of Poyang Lake |
| |
| LIU Wan-qing,NI Zhao-kui,WU Zhi-qiang,WANG Sheng-rui and ZENG Qing-ru.Influence of the River-lake Relation Change on the Distribution of Heavy Metal and Ecological Risk Assessment in the Surface Sediment of Poyang Lake[J].Chinese Journal of Environmental Science,2014,35(5):1750-1758. |
| |
| Authors: | LIU Wan-qing NI Zhao-kui WU Zhi-qiang WANG Sheng-rui and ZENG Qing-ru |
| |
| Institution: | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;College of Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China |
| |
| Abstract: | |
| |
| Keywords: | river-lake relation change Poyang Lake sediment heavy metal ecological risk |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
