C and N concentrations in different compartments of outgrown oak coppice forests under different site conditions in Central ItalyReport as inadecuate




C and N concentrations in different compartments of outgrown oak coppice forests under different site conditions in Central Italy - Download this document for free, or read online. Document in PDF available to download.

1 Consiglio per la Ricerca e la sperimentazione in Agricoltura–Research Unit for Climatology and Meteorology applied to Agriculture 2 DAFNE - Department of Agriculture and Forestry Science Viterbo 3 Department for Innovation in Biological, Agro-food and Forest systems 4 Consiglio per la Ricerca e la sperimentazione in Agricoltura, Forestry Research Centre

Abstract : & Context Harvesting of Mediterranean oak coppice forests has been progressively suspended on a share of cover over the last decades. Positive growth trend in outgrown coppices no longer harvested on short rotations now drives natural forest restoration on wide areas, and it represents a potential carbon sink in view of global warming. & Aims Our goals were to estimate carbon C and nitrogen N content per compartment in two deciduous oak outgrown coppice forests, aged differently and growing under unequal site quality, to verify whether C concentration across compart-ments is in agreement with the conventional conversion rate of 0.5. & Methods Ecosystem C and N pools were assessed by multiplying the whole coppice mass combining specific al-lometric functions, root-to-shoot ratio, and soil sampling by respective C and N concentrations. & Results The results point out that the largest percentage of N was stored in 15-cm topsoil 84.06 and 73.34 % at the younger and older site, respectively, whereas the proportion of organic ecosystem C pool was more variable, as a consequence of the amount and allocation of phytomass. We found that, in most cases, C concentration was less than the conventional conver-sion rate of 0.5, especially in deadwood, O layer, and root compartments. & Conclusion The findings provide further knowledge of C and N storage into these new built-up forest types and the evidence that a detailed analysis may get higher accuracy in the pools estimate, producing a more reliable outlook on dynamics and climate change mitigation ability of these systems.





Author: Giovanni Di Matteo - Irene Tunno - Pierfrancesco Nardi - Paolo De Angelis - Giada Bertini - Gianfranco Fabbio -

Source: https://hal.archives-ouvertes.fr/



DOWNLOAD PDF




Related documents