Establishment of a planted field with Mediterranean shrubs in Sardinia and its evaluation for climate mitigation and to combat desertification in semi-arid regions

摘要: Abstract: Forested areas are important in arid and semi-arid regions primarily to combat desertification, but also increase carbon sinks. To reverse the land degradation processes, restoration Mediterranean Basin had been frequently obtained by planting indigenous exotic conifers, it has demonstrated that shrubs nurse species for tree seedlings. Furthermore, is more efficient than allochthonous restoring degraded soils. The aims of this work were: 1) illustrate an experimental area Sardinia used as a test-site build up afforestation reforestation activities with autochthonous shrub species; 2) show results on plant survival biomass one year after plantation trying explain role different densities specific compositions; 3) hypothesize some trends C accumulation “artificial” shrubland comparison data found literature. located North West Sardinia, characterized climate. revegetation was set February 2006, local (Juniperus phoenicea, Pistacia lentiscus Rosmarinus officinalis). Three three compositions (monospecific plots P. lentiscus, monospecific J. phoenicea mixed cited species) were combined. One month plantation, almost all plants alive, mortality increased summer, independently treatments, likely due summer drought. During first year, no differences among observed. Total above-ground range 0.8-3.0 g m-2. Below-ground 0.9-1.7 A significant lower measured October, especially plots. Higher mixing seemed better perform, allowing establishment strong pioneer behaviour aridity resistant characteristics. Data collection initial conditions recurrent monitorings will be basic evaluating long term potential positive effects stock biodiversity areas.