干旱区生态环境知识资源中心(Arid): Vadose zone infiltration and its implication for groundwater contamination risk assessment in Siloam village, Limpopo province, South Africa

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DOI	10.4102/jamba.v11i2.682
	Vadose zone infiltration and its implication for groundwater contamination risk assessment in Siloam village, Limpopo province, South Africa
	Arrey, Ivo; Odiyo, John O.; Makungo, Rachel; Kataka, Milton
通讯作者	Arrey, I
来源期刊	JAMBA-JOURNAL OF DISASTER RISK STUDIES
ISSN	1996-1421
EISSN	2072-845X
出版年	2019
卷号	11
英文摘要	Risk assessment methods and approaches are useful for environmental planning and decision-making when dealing with risk identification and reduction in a changing global context. This is particularly true for arid and semi-arid regions, such as Siloam village, Limpopo province, South Africa, where it is a common practice to apply fertilisers to the soil during planting season for increasing crop yield. Estimates of vadose zone soil moisture fluxes were used to determine the likelihood of applied agricultural fertilisers to reach the groundwater table. This study combines field observations in the study area and a one-dimensional numerical model to explore the moisture fluxes and their implications for contaminant transport in the vadose zone. Model simulations revealed a lag time of 117 days at topsoil and 913 days beyond the root zone for deep percolation of soluble non-reactive inorganic and organic additives to reach the groundwater table. Preliminary results of this study suggest that the vadose zone is permeable and the groundwater is vulnerable to contamination within the evaluated time scale. Given that disaster risks are inevitable, reasonable methods for control and mitigation of agricultural impacts at this site are highly recommended.
英文关键词	Groundwater Vulnerability Infiltration Modelling Siloam Village Vadose Zone
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000474433500001
WOS关键词	VULNERABILITY ASSESSMENT ; TRANSPORT ; GUIDELINES
WOS类目	Social Sciences, Interdisciplinary
WOS研究方向	Social Sciences - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333662
作者单位	[Arrey, Ivo; Odiyo, John O.; Makungo, Rachel] Univ Venda, Sch Environm Sci, Dept Hydrol & Water Resources, Thohoyandou, South Africa; [Kataka, Milton] Univ Venda, Sch Environm Sci, Dept Min & Environm Geol, Thohoyandou, South Africa
推荐引用方式 GB/T 7714	Arrey, Ivo,Odiyo, John O.,Makungo, Rachel,et al. Vadose zone infiltration and its implication for groundwater contamination risk assessment in Siloam village, Limpopo province, South Africa[J],2019,11.
APA	Arrey, Ivo,Odiyo, John O.,Makungo, Rachel,&Kataka, Milton.(2019).Vadose zone infiltration and its implication for groundwater contamination risk assessment in Siloam village, Limpopo province, South Africa.JAMBA-JOURNAL OF DISASTER RISK STUDIES,11.
MLA	Arrey, Ivo,et al."Vadose zone infiltration and its implication for groundwater contamination risk assessment in Siloam village, Limpopo province, South Africa".JAMBA-JOURNAL OF DISASTER RISK STUDIES 11(2019).