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Variables related to nitrogen deposition improve defoliation models for European forests (CROSBI ID 218605)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Ferretti, M. ; Calderisi, M. ; Marchetto, A. ; Waldner, P. ; Thimonier, A. ; Jonard, M. ; Cools, N. ; Rautio, P. ; Clarke, N. ; Hansen, K. et al. Variables related to nitrogen deposition improve defoliation models for European forests // Annals of forest science, 72 (2015), 7; 897-906. doi: 10.1007/s13595-014-0445-6

Podaci o odgovornosti

Ferretti, M. ; Calderisi, M. ; Marchetto, A. ; Waldner, P. ; Thimonier, A. ; Jonard, M. ; Cools, N. ; Rautio, P. ; Clarke, N. ; Hansen, K. ; Merilä, P. ; Potočić, Nenad

engleski

Variables related to nitrogen deposition improve defoliation models for European forests

Key message: Atmospheric deposition of nitrogen compounds and soil and foliar variables related to N deposition resulted important factors accounting for the variability of defoliation in European forest plots. Context: Nitrogen (N) deposition has increased in the northern hemisphere because of anthropogenic- related emission of N compounds. Increased N availability may have an adverse impact on forest sustainability. Aims: This study aims to test the importance of throughfall N (Nthr) deposition in explaining the variability of the frequency of trees with defoliation >25 % (F 25), an indicator of forest condition. Methods: A pan-European data set (71 plots) with enhanced quality control was considered. The additive effect of Nthr-related predictors (identified conceptually and by rank correlation) in explaining F 25 was investigated by partial least square regression in comparison with a reference model based on site, stand, management and climate data. Reported damage to foliage, Nthr deposition, foliar N ratios and mineral top-soil variables were added stepwise to the reference model. Results: N-related variables improved defoliation models. Higher Nthr deposition led to higher F 25 for beech and Norway spruce, while the effect was opposite for Scots pine. Higher foliar N ratios led to higher F 25 for all species. Conclusion: Nthr deposition, damage to foliage, foliar N/P, N/Ca, N/Mg, N/K, top-soil pH, C/N and exchangeable base cation resulted important factors (although with possible diverse effect) in explaining the variability of F 25 among plots.

Nitrogen deposition; Defoliation; ICP Forests; Europe

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Podaci o izdanju

72 (7)

2015.

897-906

objavljeno

1286-4560

10.1007/s13595-014-0445-6

Povezanost rada

Šumarstvo

Poveznice
Indeksiranost