1,720,990 research outputs found
Le aree agricole
No full textL’Isola dell’Asinara, nella grande diversità e varietà dei suoi ambienti, presenta alcune porzioni di territorio che hanno avuto un significativo interesse agrario. Le superfici utilizzate sono rappresentate all’incirca dal 5% della superficie totale ma, di fatto, costituiscono tutte le porzioni di territorio che potevano avere una possibilità di utilizzo per le coltivazioni. Inoltre il pascolamento, sia dei selvatici che dei domestici, ha da sempre interessato l’intera superficie dell’isola, comportando pesanti effetti negativi sulla vegetazione naturale. Le fasi storiche che si sono succedute, in particolare quelle che hanno riguardato l’ultimo trentennio dell’attività carceraria, hanno fortemente caratterizzato le linee nelle trasformazioni agrarie e le strategie delle scelte nei sistemi agro zootecnici; è principalmente a questo periodo che si dovrà fare riferimento per le scelte gestionali del Parco per le aree agricole
Fabbisogno in freddo nel germoplasma di ciliegio della Sardegna. Indagine sulla cultivar “Bonnanaro”
No full textCultivar minori di ciliegio dolce (Prunus avium L.) a confronto con altre di larga diffusione
No full textProve di gestione in contenitore di cultivar ornamentali di mirto
No full textBecause of the increasing appreciation for Mediterranean maquis plants in pot and for myrtle particularly, some ornamental characters of myrtle cultivars have been studied. Selections were obtained with the researches carried out by DESA of the University of Sassari in the last years. Some of these cultivars in fact showed valuable ornamental characters and have been chosen to study pot growing performance, plant architecture, vegetative vigour, behavior to treatments of pruning and formation. The evenience of stress symptoms under the experiment condition was also observed, as well as the possibility of commercialization like pot bloomed plants, rather than like plant for cut foliage production (green, bloomed or with fruit) or for hedge. In particular, the research concerned the cultivars ‘Daniela’, ‘Luisa’ and ‘Angela’ and their response to pot pruning to regulate plant architecture, measuring at the same time the quantity and the quality of the biomass produced
Agro-biodiversity decrease and relations with landscape ecology in the Asinara National Park (Sardinia, Italy)
No full textIn the last few decades, a remarkable losses of biodiversity has occurred in Europe, in part caused
by ecological effects of changes in agricultural systems production. This changes affect the character of landscapes and the availability of genetic resources. Further loss of species could accelerate the
changes in ecosystem processes, but it is not clear how these changes, as compared to direct effects of the other forms of environmental change, influences diversity loss and alteration of the ecosystem
functions. The marginal agricultural areas are particularly affected by diffuse habitats alterations. In these
cases, Agro-ecology analysis allows to distinguish between land cover and land use, supporting the
description of the interrelations between agro-biodiversity and landscape types. Often, different levels of biodiversity match different landscape expressions.
The aim of the study is to verify the sustainability of agricultural models activities oriented to the
improvement of agro-biodiversity levels, as connected with habitat and species conservation within
protected natural areas in the study case of the Asinara National Park (Sardinia, Italy). The functional agricultural land use in protected areas must be also representative of the culture and the knowledge of
the rural traditional context
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