The work reports about the establishment and the development after two years of a Paulownia tree plantation in a large and homogeneous agricultural area, representative as a test site for climate, soil and land use ch...The work reports about the establishment and the development after two years of a Paulownia tree plantation in a large and homogeneous agricultural area, representative as a test site for climate, soil and land use characters of the countryside of Oristano, central Sardinia, Italy. The first results showed that the role assigned to Paulownia trees can be a beneficial system leading to a low carbon and high biomass productive agriculture in short time.展开更多
Immediate cutting and logging of mixed conifer/broadleaves species in a man-made forest crossed by fire in 2009 in the Arci Mountain in Sardinia can not guarantee as the best post-fire regeneration. The study case rep...Immediate cutting and logging of mixed conifer/broadleaves species in a man-made forest crossed by fire in 2009 in the Arci Mountain in Sardinia can not guarantee as the best post-fire regeneration. The study case reports the differences in the density and in the height of seedlings. The release of damaged Pinus halepensis Mill. stems seems to confirm the tree seeder role of this species.展开更多
The current study focuses on the contribution of the dromedary in the preservation and increase of spontaneous flora through seeds transfer by endozoochory. Thus dromedary faeces have been collected in selected area o...The current study focuses on the contribution of the dromedary in the preservation and increase of spontaneous flora through seeds transfer by endozoochory. Thus dromedary faeces have been collected in selected area of region of Ghardaia （Northern Algeria Sahara）, since it is one of the three known cameline rangelands during the four successive seasons of the years 2009-2010, in order to examine their seed contents. Our investigation allowed us to invento 1,832 seeds representing 33 different types varying according to the seasons of harvest. The biggest density of seeds was present in summer with 986 seeds, against 424 seeds in winter, 366 seeds in fall and 56 seeds in spring, and of the same way, the biggest number of types was present in summer with 30 types, consistent of the fall season with 26 types, and arrived then the season of winter with 20 types and the one of spring with five types. The gotten results allowed us to appreciate the ecological role of this animal in the desertic ecosystem in the dissemination and the proliferation of the seeds of the spontaneous flora in its fragile and hostile desert environment to the survival of the seeds enveloped in its faeces.展开更多
The local plant resources adapted to the desert harsh geomorphologicl environment are a landmark that characterizes the Saharan region： erg, dunes, and wadis. This work emphasizes on some results obtained through a s...The local plant resources adapted to the desert harsh geomorphologicl environment are a landmark that characterizes the Saharan region： erg, dunes, and wadis. This work emphasizes on some results obtained through a study conducted in 2011, based on surveys and field observations in the Tidikelt oases （in Salah, wilaya of Tamenrasset） which is implanted in the south of Algeria. The objective was the study of traditional herbal medicine using the spontaneous medicinal herbs, which constitute one of the socio-cultural aspects of Saharan society in Algeria. Traditional medicine is one reflect of the knowledge and how to live of the local population. Desert people know the various herbs ＇Achebe＇, and its nomenclature. They indicated their site or places of local presence, as well as its own peculiarities and their uses. Our goal is to contribute in enhancing the interest of valorization of these plants in the therapeutic and eventually industrial uses. For that, we need to integrate this perspective into local economic development policies valuing the diversity of plant resources from Tidikelt in the Algerian Sahara.展开更多
文摘The work reports about the establishment and the development after two years of a Paulownia tree plantation in a large and homogeneous agricultural area, representative as a test site for climate, soil and land use characters of the countryside of Oristano, central Sardinia, Italy. The first results showed that the role assigned to Paulownia trees can be a beneficial system leading to a low carbon and high biomass productive agriculture in short time.
文摘Immediate cutting and logging of mixed conifer/broadleaves species in a man-made forest crossed by fire in 2009 in the Arci Mountain in Sardinia can not guarantee as the best post-fire regeneration. The study case reports the differences in the density and in the height of seedlings. The release of damaged Pinus halepensis Mill. stems seems to confirm the tree seeder role of this species.
文摘The current study focuses on the contribution of the dromedary in the preservation and increase of spontaneous flora through seeds transfer by endozoochory. Thus dromedary faeces have been collected in selected area of region of Ghardaia （Northern Algeria Sahara）, since it is one of the three known cameline rangelands during the four successive seasons of the years 2009-2010, in order to examine their seed contents. Our investigation allowed us to invento 1,832 seeds representing 33 different types varying according to the seasons of harvest. The biggest density of seeds was present in summer with 986 seeds, against 424 seeds in winter, 366 seeds in fall and 56 seeds in spring, and of the same way, the biggest number of types was present in summer with 30 types, consistent of the fall season with 26 types, and arrived then the season of winter with 20 types and the one of spring with five types. The gotten results allowed us to appreciate the ecological role of this animal in the desertic ecosystem in the dissemination and the proliferation of the seeds of the spontaneous flora in its fragile and hostile desert environment to the survival of the seeds enveloped in its faeces.
文摘The local plant resources adapted to the desert harsh geomorphologicl environment are a landmark that characterizes the Saharan region： erg, dunes, and wadis. This work emphasizes on some results obtained through a study conducted in 2011, based on surveys and field observations in the Tidikelt oases （in Salah, wilaya of Tamenrasset） which is implanted in the south of Algeria. The objective was the study of traditional herbal medicine using the spontaneous medicinal herbs, which constitute one of the socio-cultural aspects of Saharan society in Algeria. Traditional medicine is one reflect of the knowledge and how to live of the local population. Desert people know the various herbs ＇Achebe＇, and its nomenclature. They indicated their site or places of local presence, as well as its own peculiarities and their uses. Our goal is to contribute in enhancing the interest of valorization of these plants in the therapeutic and eventually industrial uses. For that, we need to integrate this perspective into local economic development policies valuing the diversity of plant resources from Tidikelt in the Algerian Sahara.
