干旱区生态环境知识资源中心(Arid): Decadal changes and ecological risk assessment of trace and heavy metal elements in soils of a desert oasis, Linze County, China

Arid

DOI	10.1071/SR18245
	Decadal changes and ecological risk assessment of trace and heavy metal elements in soils of a desert oasis, Linze County, China
	Yang, Rong; Du, Zeyu; Kong, Junqia
通讯作者	Yang, Rong
来源期刊	SOIL RESEARCH
ISSN	1838-675X
EISSN	1838-6768
出版年	2019
卷号	57 期号:2 页码:178-186
英文摘要	This study assesses decadal changes (2005-2015) in the trace and heavy metal element contents of soils from four land use types at a desert oasis and also determines associated ecological and health risks. Concentrations of boron, molybdenum, manganese, zinc, copper, cadmium, lead, and mercury increased significantly over the decade. Farmland ecosystems had higher concentrations of soil trace and heavy metal elements than natural ecosystems, but intercropping with alfalfa tended to reduce concentrations. The environmental pollution assessment indicated that soils were moderately affected by human activities, particularly in farmland ecosystems. The potential degree of ecological risk from all elements was moderate, and in relation to land use this risk decreased in the following order: long-term cultivated farmland > newly reclaimed farmlands with monoculture > newly reclaimed farmlands with intercropping > natural desert grassland. Eight soil heavy metals posed potential non-carcinogenic risks, and dermal contact was the major exposure pathway; however, the carcinogenic risk level from soil was acceptable. These results suggest that agricultural activities increased the concentrations of certain soil trace and heavy metal elements and that adopting appropriate farmland management, such as intercropping with alfalfa, limited this increasing trend.
英文关键词	contamination factor farmland health risk heavy metals
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000460843100008
WOS关键词	HEALTH-RISK ; SOURCE APPORTIONMENT ; SURFACE SOILS ; PHYTOREMEDIATION ; CONTAMINATION ; POLLUTION ; JIANGSU ; MIDDLE ; RIVER
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218879
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Rong,Du, Zeyu,Kong, Junqia. Decadal changes and ecological risk assessment of trace and heavy metal elements in soils of a desert oasis, Linze County, China[J],2019,57(2):178-186.
APA	Yang, Rong,Du, Zeyu,&Kong, Junqia.(2019).Decadal changes and ecological risk assessment of trace and heavy metal elements in soils of a desert oasis, Linze County, China.SOIL RESEARCH,57(2),178-186.
MLA	Yang, Rong,et al."Decadal changes and ecological risk assessment of trace and heavy metal elements in soils of a desert oasis, Linze County, China".SOIL RESEARCH 57.2(2019):178-186.