Agriculture is coming under more and more pressure to justify its use of the world's freshwater resources and to improve its productive and environmental performance. The allocations of raw water to agriculture (and the allocations within the agriculture sector) all need to be negotiated in a transparent way. This report reviews the large set of literature on the subject and makes the case for the adoption of a functional approach to water valuation as a basis for such negotiation.

Revista internacional de silvicultura e industrias forestales

The present issue of Forest Genetic Resources (FGR) goes to press immediately following the Eleventh World Forestry Congress held in Turkey 13-22 October 1997, which more than 4000 colleagues from 145 countries attended. In regard to the conservation and use of forest genetic resources, the Congress, in its deliberations and report, stressed that action to conserve, manage, sustainably utilize and enhance forest genetic resources is an urgent priority.

The Global Forest Resources Assessment 2000 (FRA 2000) provides a comprehensive and up-to-date view of the world's forest resources at the end of the second millennium. It is the result of the collective efforts of the countries of the world. This major undertaking was based primarily on information provided by the countries, supplemented by state-of-the-art technology to verify and analyse the information and to make the results accessible to the world through the Internet. The FRA 2000 process emphasized collaboration and transparency.

Drainage of agricultural land is one of the most critical water management tools for the sustainability of productive cropping systems, as frequently this sustainability is extremely dependent on the control of waterlogging and soil salinization in the rootzone of most crops. On some agricultural lands, the natural drainage is sufficient to maintain high productivity. However, many others require improvements in surface and subsurface drainage in order to optimize land productivity, while maintaining the quality of soil resources.

La parte delantera de la postal ofrece una breve descripción sobre la Pérdida de carbono orgánico del suelo - COS (definición, causa, hechos clave), mientras que la parte posterior muestra las condiciones y tendencias mundiales por región. Estos datos se derivan de la información publicada en el informe del Estado Mundial del Recurso Suelo, publicado en diciembre de 2015.