Journal of Environmental Management 203 (2017) 429e438 Contents lists available at ScienceDirect Journal of Environmental Management journal homepage: www.elsevier.com/locate/jenvman Research article Regional analysis of groundwater phosphate concentrations under acidic sandy soils: Edaphic factors and water table strongly mediate the soil P-groundwater P relation Lisa Mabilde , Stefaan De Neve, Steven Sleutel Department of Soil Management, Ghent University, Coupure Links 653, 9000, Gent, Belgium art i cle i nfo abstract Article history: Historic long-term P application to sandy soils in NW-Europe has resulted in abundant sorption, satu- Received 13 March 2017 ration and eventually leaching of P from soil to the groundwater. Although many studies recognize the Received in revised form control of site-speciﬁc factors like soil texture and phosphate saturation degree (PSD), the regional- 16 July 2017 scaled relevance of effects exerted by single factors controlling P leaching is unclear. Very large obser- Accepted 22 July 2017 vational datasets of soil and groundwater P content are furthermore required to reveal indirect controls Available online 20 August 2017 of soil traits through mediating soil variables. We explored co-variation of phreatic groundwater orthophosphate (o-P) concentration and soil factors in sandy soils in Flanders, Belgium. Correlation Keywords: analyses were complemented with an
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