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Riserve di carbonio, forme di humus e qualità biologica in suoli forestali sardi

Cucca, Carlo (2013) Riserve di carbonio, forme di humus e qualità biologica in suoli forestali sardi. Doctoral Thesis.

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This work concerns the development of new methodological approaches at different ecological scales to evaluate the quality of the forest soils. The study was carried out in four sites: Monte Ferru, Timidone, Ugolio, and Pixinamanna. Three approaches were considered that focus on:
- the soil as a habitat for the micro-edaphic fauna (microscopic scale), with particular reference to the method QBS-ar;
- the properties of forest humus and the forest soil as a carbon sink (stational scale);
- the hydro-ecological functions performed by the soil along the slope, according to the LFA (Landscape Function Analysis) method. Within each study area soils were sampled for laboratory analysis and for the analysis of microarthropods, and the forest humus were classified. The LFA method has been applied only in the Pixinamanna site.
The largest organic carbon content was observed for the sites not subjected to recent disturbances. The most common humus is the Amphimull, a humus form typical of the Mediterranean environments characterized by bimodal rainfall. The QBS-ar index showed higher values for situations in which the disturbance factors were removed in remote times, and lower values with higher human impact. The LFA highlighted the different ecological performance of the studies formations.
An olistic quality index was defined according to the minimum dataset and the linear scoring approaches, to define and compare the overall quality of the studies forest soils.

Item Type:Doctoral Thesis
ID Code:8362
Contributors:Madrau, Salvatore and Zucca, Claudio
Publisher:Università degli studi di Sassari
Uncontrolled Keywords:Metodo QBS-ar, humus forestali, stock di carbonio organico, qualità dei suoli, Sardegna
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/14 Pedologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Cicli, scuole e corsi:Ciclo 24 > Scuole > Scienze dei sistemi agrari e forestali e delle produzioni alimentari > Monitoraggio e controllo degli ecosistemi forestali in ambiente mediterraneo
Deposited On:28 Mar 2013 13:14

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