This paper addressed specific questions within the much broader discussion on policies to reduce tropical deforestation and degradation in developing countries. The short-to medium-run consequences of resource policies and trade liberalization
An appreciation of time on a variety of scales may help explain the complexity of tropical rain forests and provide a frame of reference to consider the consequences of anthropogenic deforestation and global climatic change on this biome. Here
the A. reviews published tropical rain-forest research that has focused on the time dimension from late 1992 until early 1994.
Costa Rica ; Deforestation ; Forest ; Forest policy
Les chiffres et les causes de la déforestation en Costa Rica (depuis 1940 surtout) et la réaction des gouvernements costa-ricains pour une protection des milieux forestiers plus efficace tout en améliorant l'exploitation du bois. - (MC)
Measurements of suspended and dissolved loads in this watershed suggest that deforestation and agricultural activities increase the rates of erosion by a factor of five to ten. - (DWG)
in a terrestrial wetland, changing to at least mesohaline conditions by about 5600 yr B.P.. Freshwater input likely resulted from massive deforestation by the Maya that began by 4400 yr B.P.. Subsidence of the mangrove peat likely permitted the formation
by external factors, and the resulting difficulties for an introduction of new technologies are described. The following tasks and/or methods are discussed: global approaches to deforestation monitoring; working experience from local and regional case studies
Réflexion juridique sur les grands problèmes de l'environnement (effet de Serre et réchauffement global, destruction de la couche d'ozone, déforestation et désertification, pollutions, catastrophes naturelles) et sur les implications de