Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area

	Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area
	Jinfeng Wang ; Xiaoyong Bai; Fang Liu ; Jian Zhang ; Fei Chen ; Qian Lu
	2019
发表期刊	International Journal Of Environmental Research And Public Health
卷号	16 期号:23 页码:1-13
摘要	An understanding of the enrichment mechanisms of cadmium (Cd) and arsenic (As) in the process of rock weathering and soil formation is essential to develop agriculture according to local conditions. However, the enrichments of soil Cd and As under natural background conditions in karst areas are still uncertain. The enrichment factor, geo-accumulation index, redundancy analysis, and other methods were used to analyze the enrichment degree and the inflfluencing factors of Cd and As on 5 rock–soil profifiles and 15 topsoil samples, which were collected from a karst forest area in Libo County, Guizhou Province. The results showed that the enrichment process was divided into three stages. In the fifirst stage, Cd and As were enriched in carbonate rocks, and their mean concentrations were 1.65 and 3.9 times those of the corresponding abundance of the crust. In the second stage, the enrichment of the parent rock into the soil, the enrichment factors of Cd and As in the parent material horizon relative to the bedrock horizon were 9.2 and 2.82, respectively. The third stage refers to the enrichments of Cd and As in the topsoil, where Cd enrichment was more obvious than that of As. Soil organic matter (SOM) and phosphorus (P) are important factors that inflfluenced the enrichments of Cd and As in the topsoil. The functional groups of SOM were complexed with Cd and As; P easily formed precipitates with Cd, and the tree litter was fed back to the topsoil, which may be the reason for the surface enrichment of Cd and As. This study will help the scientifific community understand the enrichment mechanisms of soil Cd and As in karst areas.
关键词	Cadmium Arsenic Physicochemical Properties Of Soil Correlation Analysis Karst Forest Area
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/42920512-1/10149
专题	环境地球化学国家重点实验室
作者单位	1.College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025 2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 3.School of Tourism, Historical Culture, Liupanshui Normal University, Liupanshui 553004, China 4.Puding Karst Ecosystem Observation and Research Station, Chinese Academy of Sciences, Puding 562100, China
推荐引用方式 GB/T 7714	Jinfeng Wang,Xiaoyong Bai,Fang Liu,et al. Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area[J]. International Journal Of Environmental Research And Public Health,2019,16(23):1-13.
APA	Jinfeng Wang,Xiaoyong Bai,Fang Liu,Jian Zhang,Fei Chen,&Qian Lu.(2019).Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area.International Journal Of Environmental Research And Public Health,16(23),1-13.
MLA	Jinfeng Wang,et al."Enrichments of Cadmium and Arsenic and Their Effects on the Karst Forest Area".International Journal Of Environmental Research And Public Health 16.23(2019):1-13.

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