Unasylva is a multilingual international journal of forestry and forest industries published by the Food and Agriculture Organization of the United Nations (FAO). Produced in separate English, French, and Spanish editions, Unasylva covers all aspects of forestry: policy and planning; conservation and management of forest-based plants and animals; rural socio-economic development, including food security; species improvement; industrial development; international trade; and environmental considerations, including the role of forests and trees in maintaining a sustainable base for agricultural production as well as the effects of environmental change on forestry. Unasylva presents news about forest science and policy to a broad range of readers – policymakers, forest managers, technicians, r