Nitrogen deposition in forest sites in Italy: effects on health, growth and diversity of forest vegetation in Italy
| Autor: | Marchetto, Aldo, Ferretti, Marco, Arisci, Silvia, Bussotti, Filippo, Calderisi, Marco, Canullo, Roberto, Carnicelli, Stefano, Cecchini, Giuseppe, Fabbio, Gianfranco, Matteucci, Giorgio, Pompei, Enrico, Salvati, Luca |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | XXII Congresso della Società Italiana di Ecologia: Ecologia e gestione ambientale (S.It.E.), pp. 69–69, Alessandria, 10-13 Settembre 2012 info:cnr-pdr/source/autori:Marchetto, Aldo; Ferretti, Marco; Arisci, Silvia; Bussotti, Filippo; Calderisi, Marco; Canullo, Roberto; Carnicelli, Stefano; Cecchini, Giuseppe; Fabbio, Gianfranco; Matteucci, Giorgio; Pompei, Enrico; Salvati, Luca/congresso_nome:XXII Congresso della Società Italiana di Ecologia: Ecologia e gestione ambientale (S.It.E.)/congresso_luogo:Alessandria/congresso_data:10-13 Settembre 2012/anno:2012/pagina_da:69/pagina_a:69/intervallo_pagine:69–69 |
| Popis: | Concern about the potential effects of Nitrogen deposition on forests embraces almost all the forest ecosystem's compartments, including vegetation, soil biota, soil and soil solution, and run-off. Much emphasis was put on the role of N as a (i) factor stimulating growth, thus enhancing Carbon uptake; (ii) as a possible cause of nutritional imbalance, thus causing possible problems with tree health because of altered susceptibility to pests and disease; and (iii) as a factor altering the composition and richness of ground vegetation. In the frame of the Italian monitoring programme CONECOFOR, a study was undertaken to investigate the effect of actual N deposition and exceedance of N Critical Load (CL) on the forest vegetation at selected forest ecosystems spread across a range of environmental condition and deposition leads. At these plots atmospheric deposition have been measured over the past 15 years together with a suite of other variables, including meteorology, ozone, soil- and foliar nutrition, species diversity, tree health and growth. The study was conducted ad follows: firstly, the Simple Mass Balance (SMB) method was used to estimate CL and calculate exceedance with respect to the actual deposition lead; secondly, a set of predictors and response variables was identified. Thirdly, sub-sets of predictors were used to investigate effects of N deposition on the nutritional status of the plots and to model the response variable of interest; finally, the model's residuals (modeled-measured) were evaluated, in order to detect relationships between the response and the N deposition and CL exceedances. Results of this study will be presented and in terms of N deposition, CL exceedances, and estimated effects on tree health, growth and species diversity. |
| Databáze: | OpenAIRE |
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