干旱区生态环境知识资源中心(Arid): 露天煤矿周边不同深度土壤重金属空间变异及分布特征

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	露天煤矿周边不同深度土壤重金属空间变异及分布特征
其他题名	Spatial Variabilities and Distributions of Heavy Metal Contents in Opencast Mine Soils
	阿卜杜萨拉木·阿布都加帕尔 1; 王宏卫 1; 杨胜天 2; 买买提·沙吾提 1; 再屯古丽·亚库普 1; 何珍珍 1
来源期刊	土壤
ISSN	0253-9829
出版年	2018
卷号	50 期号:2 页码:376-384
中文摘要	以准东露天煤矿周边为研究对象,对矿区周围52个土壤样点分别采取0 ~ 10、10 ~ 20和20 ~ 30 cm不同深度的土壤样品,在室内测定了Zn、Cr、Hg和As 4种重金属含量。采用地统计学方法,定量分析了不同深度土壤重金属元素的空间变异性,并通过普通克里金插值深入分析了其水平和垂直方向的空间分布规律。研究表明:土壤重金属元素含量大小顺序为Cr>Zn>As>Hg,其中Cr、Hg和As的均值分别超过了新疆背景值的0.6倍、2.1倍和1.8倍,超标率均在60% 以上,存在较严重的污染。从空间变异性来看,半方差函数符合高斯、指数和球状模型,其块金值均为正值,说明易受正基底效应的影响,而表层和深层土壤重金属元素的块金系数均在25% ~ 75%,呈现中等空间相关性,受随机因素和结构性因素共同作用的影响。重金属元素在水平空间分布具有一定的规律性,其高值密集在矿区周边及工业园附近,而低值出现在研究区南部和古尔班通古特沙漠边缘,总体呈现南北方向递增趋势;而垂直分布上,Zn和Hg元素随深度的增加其含量递减,而As元素在表层和其他两层的空间分布上存在较大的差异。
英文摘要	The open coal mine in East Junggar Basin was selected as study area, a total of 52 soil samples around mine were collected from the depths of 0-10 cm, 10-20 cm and 20-30 cm of soil profiles and the contents of Zn, Cr, Hg and As were tested, geostatistical methods was used to quantitatively analyzed the spatial variability and distribution of heavy metal contents. The results indicated that the contents of soil heavy metals were in the order as Cr>Zn>As>Hg, and Cr, Hg and As were 0.6, 2.1, 1.8 times higher than those of regional background values, respectively, the over-limit rates were all above 60%. The Gaussian, Exponential and Spherical models mostly conformed to semi-variance function, and nugget values were positive. The surface and deep nugget coefficients of soil heavy metal contents presented medium spatial correlation between 25%-75%, mainly influenced by random factors and structural factors. The spatial distribution showed that high values of heavy metal contents assembled around the coal mine area and industrial parks, while low values in the southern of study area and edge of the Gurbantunggut Desert. Heavy metal contents showed increasing trends from south to north. The contents of Zn and Hg decreased with the increase of soil depth, while As content existed great differences in all horizons. The above results provide theoretical bases for controlling of soil heavy metal pollution and improving the ecological environment.
中文关键词	露天煤矿 ; 重金属 ; 空间变异 ; 地统计分析
英文关键词	Opencast mine Heavy metal Spatial variation Geostatistical 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:6237835
来源机构	新疆大学 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238407
作者单位	1.新疆大学资源与环境科学学院;;新疆大学, ;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046; 2.北京师范大学地理学与遥感科学学院, 北京 100875, 中国
推荐引用方式 GB/T 7714	阿卜杜萨拉木·阿布都加帕尔,王宏卫,杨胜天,等. 露天煤矿周边不同深度土壤重金属空间变异及分布特征[J]. 新疆大学, 北京师范大学,2018,50(2):376-384.
APA	阿卜杜萨拉木·阿布都加帕尔,王宏卫,杨胜天,买买提·沙吾提,再屯古丽·亚库普,&何珍珍.(2018).露天煤矿周边不同深度土壤重金属空间变异及分布特征.土壤,50(2),376-384.
MLA	阿卜杜萨拉木·阿布都加帕尔,et al."露天煤矿周边不同深度土壤重金属空间变异及分布特征".土壤 50.2(2018):376-384.