|Titolo||Assessing ozone and nitrogen impact on net primary productivity with a Generalised non-Linear Model|
|Tipo di pubblicazione||Articolo su Rivista peer-reviewed|
|Anno di Pubblicazione||2013|
|Autori||De Marco, Alessandra, Screpanti A., Attorre F., Proietti C., and Vitale M.|
|Parole chiave||Air Pollutants, Air pollution, article, beech, Carbon dioxide, Carbon fixation, Cause-effect relationships, Climate change, climate effect, Climate models, Climatic variables, concentration (parameters), Ecosystems, Elevated CO, environmental assessment, Environmental monitoring, Environmental parameters, Fagus sylvatica, Forest growth, forest health, Future climate, Geographical locations, geography, growth rate, Italy, Linear regression, linear regression analysis, Mediterranean climates, Modeling, N deposition, Native plants, net primary production, Net primary productivity, Nitrogen, Nitrogen deposition, Non-linear model, nonhuman, Nonlinear Dynamics, nonlinear regression analysis, oak, oxidation, Ozone, ozone deposition, Plant species, pollutant, Primary productivity, Productivity, Quercus, Quercus cerris, Quercus ilex, Reduced nitrogen, Regression model, statistical model, Trees|
Some studies suggest that in Europe the majority of forest growth increment can be accounted for N deposition and very little by elevated CO2. High ozone (O3) concentrations cause reductions in carbon fixation in native plants by offsetting the effects of elevated CO2 or N deposition. The cause-effect relationships between primary productivity (NPP) of Quercus cerris, Q. ilex and Fagus sylvatica plant species and climate and pollutants (O3 and N deposition) in Italy have been investigated by application of Generalised Linear/non-Linear regression model (GLZ model). The GLZ model highlighted: i) cumulative O3 concentration-based indicator (AOT40F) did not significantly affect NPP; ii) a differential action of oxidised and reduced nitrogen depositions to NPP was linked to the geographical location; iii) the species-specific variation of NPP caused by combination of pollutants and climatic variables could be a potentially important drive-factor for the plant species' shift as response to the future climate change. © 2012 Published by Elsevier Ltd.
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