Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Atmospheric deposition control of soil acidification in central Italy |
| Abstract | Acidification is a major soil-forming process, and concerns about acidifying anthropogenic atmospheric deposition make it a significant environmental issue. In the long term, the depletion of exchangeable base cations (BCEs) is the main process underpinning soil acidification. In south-central Italy, acidic soils are not rare and are often located in areas with no excess rainfall over potential evapotranspiration. Many such soils are understood to have been derived from long-term weathering, although whether acidification is an active process remains an open question. Data from the International Co-operative Programme (ICP-Forests) monitoring system revealed that BCE atmospheric deposition was high and stable in south-central Italy and allowed us to estimate the BCE budget of some acidic forest soils. We estimated the overall BCE budget of four sites in this network. Tracer approaches using conservative ions, Na and Cl, were calibrated to estimate dry BCE deposition and soil water fluxes. The contribution of atmospheric deposition to the BCE budget was such that potassium was found to be regularly accumulating at all sites at the rate of 0.08 to 0.42 g?m?y, while calcium was accumulating at a rate of 1.11 g?m?y at a central Italy site. For Ca at the other sites and for magnesium at all sites, the effect of deposition was such that the rate of BCE depletion was significantly reduced. Soil acidification appeared to be a non-active process in the central, lowland and hilly areas of Italy. |
| Source | Catena (Cremling.) 182 |
| Keywords | Base cation depositionCanopy budgetForest soilsMediterraneanSoil acidification |
| Journal | Catena (Cremling.) |
| Editor | Elsevier Science, Cremlingen, Paesi Bassi |
| Year | 2019 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.catena.2019.104102 |
| Authors | Cecchini, G.; Andreetta, A.; Marchetto, A.; Carnicelli, S. |
| Text | 407847 2019 10.1016/j.catena.2019.104102 Scopus 2 s2.0 85067580633 ISI Web of Science WOS WOS 000482493700006 Base cation deposition Canopy budget Forest soils Mediterranean Soil acidification Atmospheric deposition control of soil acidification in central Italy Cecchini, G.; Andreetta, A.; Marchetto, A.; Carnicelli, S. Universita degli Studi di Firenze; Consiglio Nazionale delle Ricerche Acidification is a major soil forming process, and concerns about acidifying anthropogenic atmospheric deposition make it a significant environmental issue. In the long term, the depletion of exchangeable base cations BCEs is the main process underpinning soil acidification. In south central Italy, acidic soils are not rare and are often located in areas with no excess rainfall over potential evapotranspiration. Many such soils are understood to have been derived from long term weathering, although whether acidification is an active process remains an open question. Data from the International Co operative Programme ICP Forests monitoring system revealed that BCE atmospheric deposition was high and stable in south central Italy and allowed us to estimate the BCE budget of some acidic forest soils. We estimated the overall BCE budget of four sites in this network. Tracer approaches using conservative ions, Na and Cl, were calibrated to estimate dry BCE deposition and soil water fluxes. The contribution of atmospheric deposition to the BCE budget was such that potassium was found to be regularly accumulating at all sites at the rate of 0.08 to 0.42 g m y, while calcium was accumulating at a rate of 1.11 g m y at a central Italy site. For Ca at the other sites and for magnesium at all sites, the effect of deposition was such that the rate of BCE depletion was significantly reduced. Soil acidification appeared to be a non active process in the central, lowland and hilly areas of Italy. 182 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85067580633 origin=inward articolo articolo 1 s2.0 S0341816219302449 main.pdf Articolo in rivista Elsevier Science 0341 8162 Catena Cremling. Catena Cremling. Catena Cremling. Catena. Cremling. Catena Amsterdam Cremling. Catena Giessen Cremling. aldo.marchetto MARCHETTO ALDO |