En el presente nmero de Unasylva se analiza la situacin forestal en las zonas urbanas y se estudia su aporte potencial a la elevacin de los niveles de vida de los habitantes en distintos escenarios urbanos.

Issues relating to land and land reform have been moving up the agenda of rural poverty and food security in recent years with the increasing acceptance that the prerequisites for broad-based and equitable development include the essential need for people to have access to land and other natural resources. Access needs to be on an equitable basis allowing the poor and the disadvantaged, including women, to secure the assets needed for them and their families to generate sustainable livelihoods.

This bulletin gives an overview of the ninth session of the working party on Soil Classification and Survey of the European Commission on Agriculture that took place in Ghent, Belgium, in september 1973. It presents the papers, discussions and recommendations developed during the meeting. A methodology of land evaluation is being developed in FAO and will be used for the interpretation of the FAO/UNESCO Soil Map of the World with a view to making a global evaluation of the land resources available for agricultural development.

Extensive grazing is the predominant form of land use on at least a quarter of the world’s land surface, in which livestock are raised on food that comes mainly from rangelands. Extensive grazing differs from crop or forestry production, in which the produce remains in situ whilst growing. Evaluation for extensive grazing, unlike that for cropping or forestry, must take into account the production of both grazing forage, termed primary production, and the livestock that feed on this forage, termed secondary production.