| 内蒙古呼伦湖沉积物营养元素分布及环境污染评价 |
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| 引用本文： | 李卫平,李畅游,贾克力,张生,史小红,张晓晶.内蒙古呼伦湖沉积物营养元素分布及环境污染评价[J].农业环境保护,2010(2):339-343. |
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| 作者姓名： | 李卫平 李畅游 贾克力 张生 史小红 张晓晶 |
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| 作者单位： | [1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]内蒙古科技大学能源与环境学院,内蒙古包头014010 |
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| 基金项目： | NSFC（50669004,50969005,40901262）;内蒙古自然科学基金重点项目（200711020604）;内蒙古“十一五”科技攻关项目;内蒙古水利厅重点支持项目 |
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| 摘 要： | 对呼伦湖各采样点表层沉积物营养元素（TN、TP和TOC）的分布特征及相互关系进行了分析，并对表层沉积物进行了营养元素的环境评价和重金属的地积累指数评价。结果表明，新开河、乌尔逊河及克鲁伦河入湖点（A10、F9、I2）营养元素的含量均低于其他采样点，且TOC与TN和TP的环境行为近似，说明TN和TP的沉积与生物有机质的沉积相伴随；呼伦湖沉积物碳氮比的均值约为10.2，说明内、外源有机质基本达到平衡状态。通过对沉积物的环境污染评价发现，呼伦湖沉积物有机污染较轻，仍处于较清洁状态，但有机氮的污染程度较为严重；地积累指数评价显示，主要污染元素为Cd和As，而Hg、Cu和Zn属于无污染状态。
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| 关 键 词： | 呼伦湖 沉积物 重金属 营养元素 环境评价 |
Distribution of Nutrient Elements and Environmental Pollution Assessment in Sediment of Hulun Lake, Inner Mongolia |
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| LI Wei-ping,LI Chang-you,JIA Ke-li,ZHANG Sheng,SHI Xiao-hong,ZHANG Xiao-jing.Distribution of Nutrient Elements and Environmental Pollution Assessment in Sediment of Hulun Lake, Inner Mongolia[J].Agro-Environmental Protection,2010(2):339-343. |
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| Authors: | LI Wei-ping LI Chang-you JIA Ke-li ZHANG Sheng SHI Xiao-hong ZHANG Xiao-jing |
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| Institution: | 1 .Faculty of Water Conservancy ＆ Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 2.Faculty of Environment ＆ Energy Resources, Inner Mongolia University of Science ＆ Technology, Baotou 014010, China) |
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| Abstract: | The distribution and inter relationship of nutrient elements（TN, TP and TOC ） in surface sediment of Hulun Lake to all investigated samples were analyzed in this paper. The environmental evaluation of nutrient elements and geo-aecumulation evaluation of heavy metals in the sediment were also determined. The results showed that the concentrating of nutrients at the entrance of Xinkai River, Wucrxun River and Kelulun River were less than other samples. The environmental behavior of TOC was similar as TN＇s and TP＇s. This indicated that the depo- sition of TN and TP were accompanied with organic matters＇. In addition, the average value of C/N was about 10.2, which illustrated that it reached balance between extraneous sources and endogenous sources. Through evaluating the sediments, it showed that Hulun Lake was lightly polluted by organic matter, but severely polluted by organic nitrogen. The results of index of geo-accumulation（Igeo） evaluation showed that the dominant contaminant was Cd, and the second was As. There were no pollution caused by Hg, Cu, Zn. |
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| Keywords: | Huluu Lake sediment heavy metals nutrient elements environmental assessment |
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