干旱区生态环境知识资源中心(Arid): 宁夏干旱地区工业区对农田土壤重金属累积的影响

Arid

	宁夏干旱地区工业区对农田土壤重金属累积的影响
其他题名	Impacts of Industrial Zone in Arid Area in Ningxia Province on the Accumulation of Heavy Metals in Agricultural Soils
	王美娥; 彭驰; 陈卫平
来源期刊	环境科学
ISSN	0250-3301
出版年	2016
卷号	37 期号:9 页码:3532-3539
中文摘要	随着我国东部沿海地区产业向中西部地区转移,曾经被冠以"净土"的西北干旱地区受到了工业排放污染的威胁. 本文以宁夏某县枸杞种植地为研究对象,采用GIS技术,以工业区为中心,结合当地主导风向,沿着黄河进行带状布点采样,分析工业区的建立对农田土壤重金属Zn、 Cr、 Ni、 Mn、 Co、 Cu、 Cd、 Pb污染的影响. 结果表明,研究区农田土壤重金属累积程度较轻,只有少数样点发生人为Zn和Cd累积; 工业区土壤中除了Ni元素以外,其它7种元素都有累积,其中Cd元素浓度达到污染水平的样点占总样点数三分之一. 空间分布格局分析结果表明,枸杞地土壤中Cd、 Zn、 Cu、 Mn和Pb等5种元素的分布与工业区位置有较强的相关性. 从土壤重金属含量的角度来看,研究区的工业区影响还未造成枸杞地土壤重金属污染,并且由于该区域土壤的pH值普遍较高(平均pH值为8.54),因此,可以认为目前还不存在农田土壤重金属污染问题. 但是工业区对农田土壤中重金属累积趋势的影响较为明显. 此外,工业区对灌溉水中重金属元素的浓度也有一定影响.
英文摘要	With the transferring of the industry from the east coastal regions of China to the mid and west regions, those places once called "Clean Earth" in the arid north-west region are facing the contamination risks by industrial emission. In order to study the impacts of the industrial zone on the accumulation of heavy metals Zn, Cr, Ni, Mn, Co, Cu, Cd, Pb in agricultural soils, we collected the agricultural soil samples in a county in Ningxia province using GIS technology. Samples were collected in a belt way along the yellow river and expanding from the industrial zone as the center according to the main local wind direction. It was suggested that the accumulation of heavy metals in studied agricultural soils was slight. High accumulation of Zn and Cd only occurred in several sites. However, the accumulation of heavy metals in industrial zone was more apparent. Except for Ni, the rest 7 elements had obvious accumulation. One third of the sites had Cd concentration at contamination level. The spatial analysis revealed that the distributions of Cd, Zn, Cu, Mn, and Pb were closely related to the location of industrial zone. Industrial zone had not caused the contamination of heavy metals in agricultural soils yet. Due to the high pH value (average pH value of 8.54), no soil contamination issue was found at present. However, the impacts of industrial zone on the accumulation of heavy metals in agricultural soils were apparent. The input pathway of heavy metals into agricultural soils was mainly dust deposition. The industrial zone also increased the heavy metal concentrations in irrigation water to some extent.
中文关键词	西北干旱区 ; 工业排放 ; 枸杞 ; 土壤重金属污染 ; 空间格局
英文关键词	arid area in north-west region industrial emission wolfberry soil heavy metal contamination spatial distribution
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5798250
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234506
作者单位	王美娥, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国.; 彭驰, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国.; 陈卫平, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国.
推荐引用方式 GB/T 7714	王美娥,彭驰,陈卫平. 宁夏干旱地区工业区对农田土壤重金属累积的影响[J],2016,37(9):3532-3539.
APA	王美娥,彭驰,&陈卫平.(2016).宁夏干旱地区工业区对农田土壤重金属累积的影响.环境科学,37(9),3532-3539.
MLA	王美娥,et al."宁夏干旱地区工业区对农田土壤重金属累积的影响".环境科学 37.9(2016):3532-3539.