干旱区生态环境知识资源中心(Arid): Spatial-temporal variability and influence factors of Cd in soils of Guangxi, China

Arid

DOI	10.1371/journal.pone.0279980
	Spatial-temporal variability and influence factors of Cd in soils of Guangxi, China
	Tian, Mi; Wang, Xueqiu; Liu, Futian; Hu, Qinghai; Qiao, Yu; Wang, Qiang
通讯作者	Wang, XQ
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2023
卷号	18 期号:1
英文摘要	In this study, the regional spatial-temporal variability of cadmium (Cd) in the topsoil of Guangxi, China from 2010 to 2016 was studied from data obtained from the China Geochemical Baseline Project (CGB I and CGB II). The driving forces of natural and anthropogenic variables were quantitatively analyzed using a geographically and temporally weighted regression model. The results showed that 1) soil Cd was highly enriched in 2010 and in soils of Hechi city in northwest Guangxi, a non-ferrous metal mining and metallurgy area, similar to 17% of the samples exceeded the soil contamination risk limit. In contrast, in 2016, the topsoil Cd content decreased significantly, with 7% of sites exceeding the soil risk limit. 2) Multiple factors jointly influenced the regional spatial variability of Cd. pH and organic carbon were found to be the main factors influencing Cd content and were strongly spatially correlated with Cd. Anthropogenic activities, including mining and industrial emissions, resulted in significant Cd enrichment in local areas, whereas agricultural and domestic pollutants were relatively weakly correlated with Cd. The weathering products of carbonates were significantly enriched in Cd; thus, the geological background played a significant role in the spatial variability of Cd. Soil-forming factors, including temperature, precipitation, and elevation influenced the spatial distribution of Cd, especially in the Cd background area. 3) Anthropogenic activities were the key factors influencing temporal changes in Cd. Mining caused significant enrichment of Cd in CGB I, while industrial emissions were the primary factor for Cd enrichment in CGB II. In addition, natural factors also played an important role; the increased Normalized Difference Vegetation Index suggested reduced desertification and reduction of soil erosion in the watershed and in pollutants transported from upstream.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000945533800001
WOS关键词	GEOGRAPHICALLY WEIGHTED REGRESSION ; RESIDUA UNDERLYING DOLOMITES ; HEAVY-METAL CONTENTS ; ATMOSPHERIC DEPOSITION ; PHOSPHATE FERTILIZERS ; CADMIUM CONTENT ; URBAN-ENVIRONMENT ; KARST TERRAINS ; WASTE-WATER ; CONTAMINATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398110
推荐引用方式 GB/T 7714	Tian, Mi,Wang, Xueqiu,Liu, Futian,et al. Spatial-temporal variability and influence factors of Cd in soils of Guangxi, China[J],2023,18(1).
APA	Tian, Mi,Wang, Xueqiu,Liu, Futian,Hu, Qinghai,Qiao, Yu,&Wang, Qiang.(2023).Spatial-temporal variability and influence factors of Cd in soils of Guangxi, China.PLOS ONE,18(1).
MLA	Tian, Mi,et al."Spatial-temporal variability and influence factors of Cd in soils of Guangxi, China".PLOS ONE 18.1(2023).