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三江源畜牧业示范区土壤重金属含量特征及评价
Characteristics and Potential Risks Evaluation of Soil Heavy Metals of the Stockbreeding Demonstration Zone in the Source of Lantsang, Yellow and Yangtse River
投稿时间:2017-03-14  修订日期:2017-04-25
DOI:10.19316/j.issn.1002-6002.2018.04.12
中文关键词:  三江源  重金属  特征  评价
英文关键词:the source of Lantsang,Yellow and Yangtse River  heavy metal  characteristic  assessment
基金项目:青海省科技支撑计划(2015-SF-A4-1);中国科学院战略性先导科技专项(XDB03030502);国家自然科学基金资助项目(31300385,31270523,31070437)
作者单位
未亚西 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院大学, 北京 100049 
贺慧丹 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院大学, 北京 100049 
罗谨 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院大学, 北京 100049 
杨永胜 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院高原生物适应与进化重点实验室, 青海 西宁 810001 
李红琴 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院高原生物适应与进化重点实验室, 青海 西宁 810001 
李英年* 中国科学院西北高原生物研究所, 青海 西宁 810001
中国科学院高原生物适应与进化重点实验室, 青海 西宁 810001 
通讯作者:李英年*  中国科学院西北高原生物研究所, 青海 西宁 810001;中国科学院高原生物适应与进化重点实验室, 青海 西宁 810001  
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中文摘要:
      为了明确三江源智慧生态畜牧业示范区内土壤重金属元素含量特征及潜在风险,2015年7月在三江源智慧生态畜牧业示范区11 个示范村镇进行土壤样品采集,带回实验室分析Pb、Cd、Hg、Cr、Cu、Zn、Ni含量。对数据进行统计分析并采用内梅罗综合污染指数和生态危害指数进行风险等级评价。结果显示:部分采样点重金属元素含量高于青海省背景值;Pb、Cr、Cu、Zn、Ni主要受土壤母质的影响,Cd受自然和人为因素的双重影响,Hg主要受人为因素影响;内梅罗综合污染指数显示11个点位的指数都小于1,该地未出现污染状况;生态危害指数显示除GMY点位处于轻微风险等级,其余采样点为中等风险等级。总体上示范区内土壤未出现强污染和面源污染状况,但需要加强点源污染的风险防范。
英文摘要:
      In order to clarify the soil heavy metal elements content characteristics and potential risks of the Wisdom Ecological Animal Husbandry Demonstration Zone in the source of Lantsang, Yellow and Yangtse River, soil samples were collected in 11 demonstration villages in this area in July, 2015 and the content of Pb, Cd, Hg, Cr, Cu, Zn, Ni in samples were analyzed in the laboratory. Then analying the data and using comprehensive pollution index of Neromei and ecological hazard index to evaluate the ecological risk of heavy metal pollution. The results showed that the content of heavy metals in some sampling locations were higher than background value of Qinghai. Pb, Cr, Cu, Zn, Ni were mainly affected by soil parent material, Cd was affected by natural and anthropogenic factors, Hg was mainly affected by anthropogenic factors. The comprehensive pollution index of Neromei showed that the indexes of 11 sampling locations were all less than 1 and there was no pollution in the place. The ecological hazard index indicated that except GMY, which was at a slight risk level, the remaining points were at medium risk level. In general, the content and potential risk of heavy metal elements in the demonstration area were relatively low, and there was no strong pollution and non-point source pollution. But in this place we should improve risk prevention of point source pollution.
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