Search results for "PEDOLOGIA"
showing 10 items of 284 documents
The First Forty Years of a Technosol
2009
Abstract Soil formation is often a very slow process that requires thousands and even millions of years. Human influence, occasionally on a par with the function of climate or geological forces, can accelerate the process and can be viewed as a distinct soil forming factor. This paper describes a soil, Haplic Regosol, in which anthrosolization dominates the soil forming process. Man-made soils, Technosols, were stabilized with techniques of ecological engineering (crib walls). We measured the main soil properties and focused on the movement of water (the reduction of soil weight is the key factor in stabilizing these calcschists). The newly deposited debris, sheltered by anthropic intervent…
Green infrastructures for the energetic and environmental sustainability of cities
2019
The inexorable extension of urbanization is consuming huge amounts of soil drastically reducing natural vegetation, replacing it with buildings and low albedo surfaces. The changes due to the different thermal properties of surface materials and the lack of evapotranspiration in urban areas lead to a phenomenon known as "urban heat island effect". By reintroducing the vegetation back into the urban landscape, a partnership between nature and cities should be strengthened to create a new sustainable urban environment. Since the outer surfaces of building offer a great amount of space for vegetation, planting on roofs and walls has become one of the most innovative way to provide several envi…
The Soil Erosion Risk Map of the Sicilian Region (1:250,000 Scale)
2014
Assessing the risk areas of soil erosion by water at the regional level is relevant for current and future land planning of environmental actions to combat land degradation. The gravity of the risk is not only depending on the rate of soil erosion by water, but also on other factors, primarily soil depth and rock weatherability. The map of the soil erosion risk in the Sicilian region, expressed in terms of years to a complete loss of the fertile soil cover, is here presented as a methodological model. The degree of risk was not only estimated in function of the rate of soil erosion by water, but also of the depth of the fertile part of the profile, and of the weatherability degree of the un…
Salinity and Bacterial Diversity: To What Extent Does the Concentration of Salt Affect the Bacterial Community in a Saline Soil?
2014
In this study, the evaluation of soil characteristics was coupled with a pyrosequencing analysis of the V2-V3 16S rRNA gene region in order to investigate the bacterial community structure and diversity in the A horizon of a natural saline soil located in Sicily (Italy). The main aim of the research was to assess the organisation and diversity of microbial taxa using a spatial scale that revealed physical and chemical heterogeneity of the habitat under investigation. The results provided information on the type of distribution of different bacterial groups as a function of spatial gradients of soil salinity and pH. The analysis of bacterial 16S rRNA showed differences in bacterial compositi…
Qualità delle produzioni orticole irrigate con acque salmastre al variare della gestione colturale in ambiente semiarido.
2008
Nella piana alluvionale di Licata (Sicilia meridionale), sotto un clima semiarido, vengono irrigati suoli con acque saline del fiume Salso e di falda (C5-S1) per la produzione di colture orticole. I dati analitici evidenziano processi di salinizzazione e sodicizzazione del suolo. La concentrazione salina dei suoli influenza la risposta quantitativa e qualitativa delle colture. Gli Autori, attraverso la composizione ionica di estratti acquosi di ceneri di zucchino e finocchio (Cucurbita pepo e Foeniculum vulgare) descrivono la qualità delle produzioni ottenute.
Il World Soil Day e la percezione del suolo
2010
Variazione degli stock di carbonio del suolo in seguito ai processi di abbandono dei coltivi: il caso studio dell’isola di Pantelleria (TP)
2007
The recent abandonment of marginal agricultural areas in the Mediterranean has caused an increase of the surface occupied by pre-forest and forest formations. In order to study the carbon accumulation processes on Pantelleria Island was selected a North-facing area. This area includes 5 stages of succession (sds) that compose a chronosequence (from 0 to 30 years) to understand soil C accumulation processes after abandonment. These are abandoned vineyards or caperbushes, not disturbed (grazing, fire) since agricultural abandonment, and they are situated in thermomediterranean belt and on the same parent material and consequently considered in the same ecological conditions. Samples at 1 cm, …
3.Storia, caratteri ed evoluzione dei boschi e dei rimboschimenti di Monte Morello e della Calvana _ 4. La vegetazione di Monte Morello e della Calva…
2016
il lavoro divulgativo espone un'attenta analisi dei caratteri geologici, pedologici, vegetazionale dei due rilievi della Toscana settentrionale, con particolare riferimento ai rimboschimenti storicamente realizzati e alla flora endemica. Il libro è ricco di schemi funzionali, illustrazioni didattiche e di una ricca raccolta fotografica.
Soil Threats
2013
Local soil classification and crop suitability: Implications for the historical land use and soil management in Monti di Trapani (Sicily)
2017
In the past, the lack of technologies (e.g. synthetic fertilizers) to overcome biophysical limitations has played a central role in land use planning. Thus, landscape management and agronomic practices are reactions to local knowledge and perceptions on natural resources, particularly soil. In the framework of the European research project MEMOLA (FP7), the role of local farmers knowledge and perceptions on soil for the historical land use through the spatial distribution of crops and the various management practices have been assessed in three different areas of Monti di Trapani region (Sicily). The identification of the soil classification systems of farmers and the criteria on which it i…