1,721,022 research outputs found
Valutazione dell’impiego di specie pratensi per la costituzione di “fasce tampone” all’interno del comprensorio agricolo del lago di Massaciuccoli (PI).
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Protocollo di coltivazione e raccolta degli impianti di Short Rotation Forestry di pioppo
No full textPrime valutazioni sugli effetti del turno di ceduazione nella short rotation forestry di pioppo in ambiente mediterraneo
No full textEnergy balance in a bioenergy plantation of Populus deltoides clone Lux in a site with Mediterranean environment
No full textGiven the energy challenges confronted by the world in general, where Chile is not an exception, forest energy crops have been positioned as a viable alternative to diversify this country’s energy matrix. These types of crops, still under development, are based on short rotation shifts with high biomass production. The problem arises when assessing the sustainability of such crops. Accordingly, the energy balance is an important factor to assess sustainability i.e. we cannot spend more energy to produce biomass than what is released by the biomass combustion. This work presents the energy balance of harvest products at roadside in a Populus deltoides clone Lux short rotation forestry during eight years (2000-2008), comparing biennial (T2) and triennial (T3) shifts. Consequently, we calculated the energy cost of production and harvest and the amount of energy released in the combustion of the biomass generated. Both rotation shifts got positive results, being triennial shifts more energy efficient than biennial ones (34.7 T2 vs 25 T3)
Impact on soil quality of a 10-year-old Short-Rotation Coppice Poplar Stand compared with intensive agricultural and uncultivated systems in a Mediterranean area.
No full textBioenergy crops play an ecologically and economically fundamental role as an alternative to agri-food productions and as renewable energy sources. Little attention has been focused on soil quality following conversion of agricultural lands to biomass crops. Here, we assessed the impact of a 10-year-old short-rotation coppice (SRC) poplar stand on the main soil chemical parameters, microbial biomass carbon, soil respiration, and arbuscular mycorrhizal fungi (AMF), compared with intensive agricultural and uncultivated systems. Three different harvest frequencies of poplar SRC (annual T1, biannual T2 and triennial T3 cutting cycles) were evaluated. Multivariate analysis showed that poplar SRC improved soil quality compared with intensive agricultural and uncultivated systems. T1 and T2 positively affected AMF inoculum potential and root colonisation of a co-occurring plant species, while T3 improved the majority of soil chemical and biochemical parameters. Moreover, three different AMF morphospecies belonging to the genera Glomus and Scutellospora were found in poplar SRC, while morphospecies belonging exclusively to genera Glomus were recorded in intensive agricultural and uncultivated systems. Such aspects have agro-ecological implications, since the positive changes of soil nutrient availability and carbon content together with a high abundance and diversity of soil biota show clear soil sustainability of poplar SRC
Sustainability of energy cropping system in the Mediterranean area: comparison between giant reed (Arando donax L.) and poplar (Populus spp.) SRC in a long-term field experiment in Central Italy
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