Accumulation of trace elements in agricultural topsoil under different geological background

	Accumulation of trace elements in agricultural topsoil under different geological background
	Chenglong Tu; Tengbing He; Congqiang Liu; Xiaohui Lu; Yunchao Lang
	2011
发表期刊	Plant and Soil
卷号	349 期号:1-2 页码:241-251
摘要	For establishing rational farming mechanism, it is essential to know the relative contribution of different geological background and anthropogenic activities to trace elements in agricultural soil. In this paper, 282 surface soil samples were collected based on the different geological background. Five harmful trace elements (As, Cd, Cr, Hg and Pb) were analyzed. The results indicated most of trace elements contents were far beyond the threshold of uncultivated soil background, which indicate anthropogenic input strongly influenced on trace elements in agricultural soil. In addition, correlation analysis showed trace element contents exhibited high relationships with soil pH, C/N and physical clay (< 0.01 mm) (p < 0.05). The principal component analysis showed that the first component included Cd, Cr and Hg, while Pb and As formed the second component. Furthermore, in the agricultural topsoil derived from carbonate rock, the high background values of trace elements and alkaline condition made the enrichments of Cd, Cr and Hg were the most significant. In the agricultural topsoil derived from red residua, the Pb and As contents was the highest values among the soil categories, partly because the type of soil had amount of physical clay (< 0.01 mm). In the agricultural topsoil derived from shale, the pH or physical clay had significant relationship with Cd, Pb, Hg and As (p < 0.01). In the agricultural topsoil derived from sand stone, the acid condition and loose texture might account for the lowest values of Cd, Cr, Pb and As content to some extent.
学科领域	环境地球化学
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/4894
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Chenglong Tu,Tengbing He,Congqiang Liu,et al. Accumulation of trace elements in agricultural topsoil under different geological background[J]. Plant and Soil,2011,349(1-2):241-251.
APA	Chenglong Tu,Tengbing He,Congqiang Liu,Xiaohui Lu,&Yunchao Lang.(2011).Accumulation of trace elements in agricultural topsoil under different geological background.Plant and Soil,349(1-2),241-251.
MLA	Chenglong Tu,et al."Accumulation of trace elements in agricultural topsoil under different geological background".Plant and Soil 349.1-2(2011):241-251.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Accumulation of trac（270KB）			开放获取	使用许可	浏览下载