干旱区生态环境知识资源中心(Arid): 渭干河-库车河绿洲土壤重金属分布特征与生态风险评价

Arid

	渭干河-库车河绿洲土壤重金属分布特征与生态风险评价
其他题名	Distribution of heavy metal pollution and assessment of its potential ecological risks in Ugan-Kuqa River Delta of Xinjiang
	麦尔耶姆·亚森 1; 买买提·沙吾提 2; 尼格拉·塔什甫拉提 3; 依克丽曼·阿布都米提 1; 马春玥 1; 如则麦麦提·米吉提 1; 马依拉·热合曼 1; 王敬哲 1
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2017
卷号	33 期号:20 页码:226-233
中文摘要	随着工业发展和城市化进程的加剧,农用化学物质种类和数量不断增加,导致土壤受到不同程度的重金属污染,农田土壤重金属污染尤为严重。该文以新疆最典型的荒漠绿洲渭库绿洲为研究区,采集土壤样本57个,测定出土壤样本中砷(As)、汞(Hg)、铅(Pb)、铬(Cr)、锌(Zn)和铜(Cu)6种元素的含量,分别采用地统计空间分析法、地积累指数法(I_(geo))和潜在生态风险指数(RI)等方法,对研究区土壤重金属污染和潜在生态风险程度做出科学评价,并采用多因子分析方法对重金属的来源进行了讨论。1)研究区Hg、As、Cu、Cr、Pb和Zn 6种土壤重金属平均质量分数分别为2.41、0、37.64、25.25、39.78、15.01 mg/kg,平均含量均未超过国家二级标准,其中Pb的平均含量超过了新疆土壤重金属背景值,存在一定程度的重金属积累;2)由地积累指数法(I_(geo))和潜在生态风险指数(RI)分析得出,研究区土壤重金属的I_(geo)均值As(-4.59)
英文摘要	As the progress of industrial development and urbanization, the quantities and types of agricultural chemicals have been increasing, which has led to heavy metal pollution in soil, and the pollution in agricultural soils was especially serious. In this paper, Ugan-Kuqa River oasis was selected to be study area. The amounts of As, Hg, Pb, Cr, Zn and Cu were determined from 57 soil samples collected in Ugan-Kuqa River oasis. The spatial analysis, geo-accumulation index, and potential ecological risk index were adopted to evaluate the pollution characteristics, pollution degree and potential ecological risks of heavy metal, and the multivariate statistical analysis was adopted for the discussion on heavy metal. The results showed that: 1) The contents of 6 kinds of heavy metals in soils, i.e. Hg, As, Cu, Cr, Pb and Zn, were different, and the average contents were 2.41, 0, 37.64, 25.25, 39.78 and 15.01 mg/kg, respectively; soil heavy metal contents were not higher than national standard level, but Pb content value was higher than the background value of soil in Xinjiang. There is a certain degree of heavy metal pollution in the study area. 2) Through the analysis of geo-accumulation index and potential ecological risk index, the results showed that the heavy metals for the geo-accumulation index value were sorted as As (-4.59) < Hg (-3.62) < Cu (-1.92) < Cr (-1.44) < Zn (0.59) < Pb (0.73), and the potential ecological risk index was 22.26, presenting the non-pollution level of soil heavy metal in research area. 3) By the correlation analysis, principal component analysis and cluster analysis, the sources of heavy metals could be classified 2 categories in the study area. The source of Cu, Zn, Cr and Pb might be from the combined influence of the soil parent material and human agricultural activities. As and Hg might be controlled by landform and hydrologic environment factors. 4) Although the ecological risk index of study area was non-pollution level, there was difference on ecological risk index for different regions; among them, the values of ecological risk index were higher in the areas west-north (WN), north-west (NW) and north-east (NE), and the highest value appeared in the area north- east (NE), which should be on alert. In this paper, the proposed method of analysis can reflect characteristics and source of soil heavy metal quickly and objectively in the oasis, and it can provide scientific basis for evaluation and management of soil environment quality in the oasis.
中文关键词	重金属 ; 污染 ; 土壤 ; 渭库绿洲 ; 潜在生态风险 ; 主成分分析
英文关键词	heavy metals pollution soils Ugan-Kuqa river oasis potential ecological risk principle component analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6116773
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236333
作者单位	1.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国; 2.新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国; 3.新疆大学资源与环境科学学院, 新疆智慧城市与环境建模普通高校重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	麦尔耶姆·亚森,买买提·沙吾提,尼格拉·塔什甫拉提,等. 渭干河-库车河绿洲土壤重金属分布特征与生态风险评价[J]. 新疆大学,2017,33(20):226-233.
APA	麦尔耶姆·亚森.,买买提·沙吾提.,尼格拉·塔什甫拉提.,依克丽曼·阿布都米提.,马春玥.,...&王敬哲.(2017).渭干河-库车河绿洲土壤重金属分布特征与生态风险评价.农业工程学报,33(20),226-233.
MLA	麦尔耶姆·亚森,et al."渭干河-库车河绿洲土壤重金属分布特征与生态风险评价".农业工程学报 33.20(2017):226-233.