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dc.contributor.authorShao, Shuai
dc.contributor.authorDriscoll, Charles T
dc.contributor.authorJohnson, Chris E
dc.contributor.authorFahey, Timothy J
dc.contributor.authorBattles, John J
dc.contributor.authorBlum, Joel D
dc.date.accessioned2021-10-12T06:18:09Z
dc.date.available2021-10-12T06:18:09Z
dc.date.issued2016
dc.identifier.issn1448-2517
dc.identifier.doi10.1071/EN15113
dc.identifier.urihttp://hdl.handle.net/10072/408922
dc.description.abstractIn October 1999, 3450 kg ha–1 of wollastonite (CaSiO3) was applied to Watershed 1 at the Hubbard Brook Experimental Forest in New Hampshire, USA, with the objective of restoring calcium that had been depleted from soil-exchange sites by chronic inputs of acid deposition. After the treatment, the concentrations and fluxes of calcium and dissolved silica significantly increased in both soil solution and stream water throughout Watershed 1, as did the acid-neutralising capacity. The concentrations and fluxes of inorganic monomeric aluminium significantly decreased. The treatment improved the acid–base status and decreased the potential for aluminium toxicity in stream water, especially in the lower reaches of the watershed. Approximately 4.7 % of the added calcium and 17 % of the added silica from the wollastonite treatment was exported from Watershed 1 in stream water by the end of 2010. Meanwhile, ~1825 mmol m–2 of the added calcium and 2125 mmol m–2 of the added silica were either transported to lower mineral soil horizons – as particulate wollastonite, or as dissolved solutes (calcium 77.6 mmol m–2; silica 592.2 mmol m–2), thus contributing to increases in soil pools – or were taken up by vegetation and incorporated into internal calcium and silica cycles of the watershed ecosystem. This experimental wollastonite addition was an effective tool for mitigating the acidification of the ecosystem and restoring the calcium status and forest health of this base-poor watershed.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherCSIRO Publishing
dc.relation.ispartofpagefrom528
dc.relation.ispartofpageto540
dc.relation.ispartofissue3
dc.relation.ispartofjournalEnvironmental Chemistry
dc.relation.ispartofvolume13
dc.subject.fieldofresearchGeochemistry
dc.subject.fieldofresearchEarth sciences
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchcode3703
dc.subject.fieldofresearchcode37
dc.subject.fieldofresearchcode41
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsChemistry, Analytical
dc.subject.keywordsEnvironmental Sciences
dc.titleLong-term responses in soil solution and stream-water chemistry at Hubbard Brook after experimental addition of wollastonite
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationShao, S; Driscoll, CT; Johnson, CE; Fahey, TJ; Battles, JJ; Blum, JD, Long-term responses in soil solution and stream-water chemistry at Hubbard Brook after experimental addition of wollastonite, Environmental Chemistry, 2016, 13 (3), pp. 528-540
dc.date.updated2021-10-12T06:13:53Z
gro.hasfulltextNo Full Text
gro.griffith.authorJohnson, Chris E.


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