Sand pH and Distance from Ocean
Location: Outside U.S.
Country: United Kingdom
Date: Summer 2013
Why does the pH of sand decrease the further away you get from the sea?
Tannins in leaf litter leaching into water makes groundwater and the soil acidic. The further inland one goes, presumably the thicker the leaf litter and therefore the pH goes down.
Peter E. Hughes, Ph.D. Milford, NH
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Update: November 2011