La plupart des numros d'Unasylva sont axs sur un thme particulier. L'objectif n'est pas de prsenter une introduction ou un manuel sur le sujet choisi (ce qui serait impossible tant donn le format de la revue), mais plutt de proposer une srie d'analyses sur des aspects spcifiques qui contribuent veiller l'intrt et l'attention du lecteur. Les articles sont dits de faon intresser les lecteurs dont le travail porte essentiellement sur le thme choisi, ainsi que la majorit des lecteurs qui travaillent dans d'autres disciplines.

To produce the desired results, therefore, watershed management efforts must incorporate "forest hydrology", "soil and water conservation" and "land use planning" into a broader, logical framework that takes into consideration not only physical interrelationships but economic, social and institutional factors as well. In this issue, Unasylva examines several facets of watershed management.

Revista internacional de silvicultura e industrias forestales

This country report covers the overall situation of forest resources in Guinea-Bissau. The report includes an introduction covering the main aspects of forest resources in the country. The first part gives some general information about what forest resources are available giving some details about the types of vegetation, biodiversity, etc. The second part of the report covers the vegetation coverage according to the national classification.

Revue internationale des forts et des industries forestires

With 48% forest cover, the Greater Mekong Subregion still has large areas of forest remaining. The area of primary forest is, however, low and falling, while large tracts of forest are highly degraded and forest planting rates remain low in most countries. Reinvestment in forests is necessary to maintain wood and timber production, support biodiversity conservation and climate change mitigation, revitalise rural economies and protect against natural hazards and the impacts of climatic alterations. For a greener future, investment in forestry is essential.

Revue internationale des forts et des industries forestires

Meeting symbol/code: COFO 99 INF.7

Revue internationale des forts et des industries forestires

Developments in China will have substantial impacts on forestry in the rest of the region. This wide-ranging country outlook study discusses a host of topics including prospects for China's afforestation/reforestation efforts, supply and demand for forest products and ecological services, key drivers of change, impacts of globalization, policy developments, and social objectives of forestry.