1,721,017 research outputs found
Silicio, Alluminio, Ferro, e Manganese. Contenuto Totale e Frazionamento Chimico.
No full textSono riportati i metodi di laboratorio per la determinazione del contenuto totale e di varie forme chimiche (estraibili con ditionito-citrato-bicarbonato, ammonio ossalato acido, sodio pirofosfato, rame cloruro, sodio tetraborato) di quattro importanti elementi per la scienza del suolo: silicio, alluminio, ferro e manganese
Ruolo dell'altitudine nella conservazione della sostanza organica in suoli di prateria secondaria sul massiccio della Majella
No full textNitrogen dynamics in two soils with different texture treated with livestock –derived organic materials.
No full textSoil genesis and evolution on calanchi (badland-like landform) of central Italy
Full text linkCalanchi are badland-like erosional landforms, common in the Mediterranean region, which form from accelerated
erosion processes. The calanchi slopes, naked or differently vegetated, can be considered as formed by
different ecological tesserae originated by the mutual interaction of several factors such as erosion, geomorphology,
microclimatic conditions, vegetation, ground cover, and pedogenesis. However, information about pedogenesis
is rather scarce mainly because the soils developing on calanchi slopes are incessantly disturbed by erosion
processes. To understand the role of soil evolution on landslide erosion,we considered three land facets each one
made up of four tesserae (T1 to T4), which represented the different steps of soil and vegetal evolution of
calanchi. The soil of each tesserawas described, sampled by genetic horizons, and the samples were characterized
for their physical, mineralogical and chemical properties. Field observations and laboratory data suggest that pedogenesis
in the calanchi badlands may progress until a critical threshold. Indeed, advanced plant colonization
and solumdevelopment improve soil structure, increase soil organic matter, and favor redistribution of nutrients
along the profile. The improvement of structure at depth fosters water storage and clay dispersion through soil
leaching and reduction of ionic strength of the soil solution, making soil less stable. Depending on the slope
gradient, the soil weight acquired during rainfall events may trigger landsliding, mudflows, or collapses that
rejuvenate the surface
Aggregation and nitrogen mineralisation in two soils with different texture treated with live-stock derived organic materials
No full textMorfologie a patterned ground in suoli ben drenati della Majella (Italia Centrale) e loro genesi.
No full textBollettino della Società Italiana di Scienza del Suolo.in stamp
Adaptive Strategy of Three Typical Plant Species Over Majella Massif (central Italy): Differences in Microbial Community and Nutrient Uptake
No full textThe rhizosphere represents a highly dynamic and complex interface for chemical, physical and biological interactions between plant and soil (Berg and Smalla, 2008). We report the adaptive strategy induced by the rhizosphere of three plants colonizing the high-elevated base-rich soils of Majella Massif (central Italy): Silene acaulis (L.), Dryas octopetala (L.), Helianthemum nummularium (L.) Mill. subsp. grandiflorum (Scop.). The aims of the research were to investigate the effects of these species, distinguishing between rhizospheric and bulk soil, on: (i) the main chemical characteristics (ii) the microbial community structure, abundance and activity, and (iii) the nutrient absorption strategy
Influenza della coltivazione della vite sull'accumulo di sostanza organica in suoli derivati da sedimenti plio-pleistocenici
No full textProperties, best management practices and conservation of terraced soils in Southern Europe (from Mediterranean areas to the Alps): a review.
No full textTerrace soils are distinctive features of the agricultural landscape in Europe. Due to their historical and aesthetic significance, they are a resource for agriculture and tourism: however they are also a challenge for land conservation and management. Nevertheless, the fundamental role of terrace soils for agricultural quality and natural hazard prevention has not been fully investigated.
In the past, terraced slopes became ideal sites for human settlement and agricultural activities. At present, they are often used for high quality crops that grow on soils with specific chemical and physical properties. The filling material used for building terraces is a human-reworked substrate, where pedogenesis occurs under a strong human influence. This leads to soils with a generally limited pedogenic development and coarse texture, although, often, with good productivity. When abandoned, terraces are subjected to progressive decay due to erosion processes and slope failures.
This review focuses on terrace soil properties, conservation and management in Southern Europe. In particular, it reports some examples from the northwestern Italian Alps, where terraced slopes are characterised by ancient origin and, presently, are subjected to specific practices for their preservation. The different effects of land degradation at hill slope scale may be mitigated through appropriate management practices favoring the terrace walls maintenance, drainage optimization, and the presence of a spontaneous vegetation cover. These subjects require careful planning and conservation measures that could be collected in “best practices” guidelines for farmers, landowners and decision-makers
- …
