The response of soil solution chemistry in European forests to decreasing acid deposition
Rattachement africain : ie, ch, it, no, be, se, de, fi, gb, dk. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Acid deposition arising from sulphur (S) and nitrogen (N) emissions from fossil fuel combustion and agriculture has contributed to the acidification of terrestrial ecosystems in many regions globally. However, in Europe and North America, S deposition has greatly decreased in recent decades due to emissions controls. In this study, we assessed the response of soil solution chemistry in mineral horizons of European forests to these changes. Trends in pH , acid neutralizing capacity ( ANC ), major ions, total aluminium (Al tot ) and dissolved organic carbon were determined for the period 1995–2012. Plots with at least 10 years of observations from the ICP Forests monitoring network were used. Trends were assessed for the upper mineral soil (10–20 cm, 104 plots) and subsoil (40–80 cm, 162 plots). There was a large decrease in the concentration of sulphate ( ) in soil solution; over a 10‐year period (2000–2010), decreased by 52% at 10–20 cm and 40% at 40–80 cm. Nitrate was unchanged at 10–20 cm but decreased at 40–80 cm. The decrease in acid anions was accompanied by a large and significant decrease in the concentration of the nutrient base cations: calcium, magnesium and potassium (Bc = Ca 2+ + Mg 2+ + K + ) and Al tot over the entire dataset. The response of soil solution acidity was nonuniform. At 10–20 cm, ANC increased in acid‐sensitive soils (base saturation ≤10%) indicating a recovery, but ANC decreased in soils with base saturation >10%. At 40–80 cm, ANC remained unchanged in acid‐sensitive soils (base saturation ≤20%, ≤ 4.5) and decreased in better‐buffered soils (base saturation >20%, > 4.5). In addition, the molar ratio of Bc to Al tot either did not change or decreased. The results suggest a long‐time lag between emission abatement and changes in soil solution acidity and underline the importance of long‐term monitoring in evaluating ecosystem response to decreases in deposition.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- The response of soil solution chemistry in European forests to decreasing acid deposition
- Date Crossref
- 03/05/2018
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University College Dublin pays non établi dans la noticeUniversité ou école supérieure
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Swiss Federal Institute for Forest WSL pays non établi dans la noticeStructure de recherche
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University of Florence Earth Sciences Department pays non établi dans la noticeUniversité ou école supérieure
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Norwegian Institute of Bioeconomy Research pays non établi dans la noticeOrganisme public
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Research Institute for Nature and Forest pays non établi dans la noticeStructure de recherche
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IVL Swedish Environmental Research Institute pays non établi dans la noticeOrganisation à but non lucratif
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Swedish Environmental Protection Agency pays non établi dans la noticeOrganisme public
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Nordwestdeutsche Forstliche Versuchsanstalt pays non établi dans la noticeStructure de recherche
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Natural Resources Institute Finland pays non établi dans la noticeOrganisme public
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UCLouvain pays non établi dans la noticeUniversité ou école supérieure
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Forest Research pays non établi dans la noticeInstitution
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University of Copenhagen Department of Geosciences and Natural Resource Management pays non établi dans la noticeUniversité ou école supérieure
University College Dublin, WSL — Swiss Federal Institute for Forest et Earth Sciences Department — University of Florence, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.