Congo DR ; Deforestation ; Fallow land ; Forest ; Geographical information system ; LANDSAT ; Land use ; Plant cover ; Remote sensing ; Scenario ; Thematic Mapper ; Tropical rain forest
The aim of this study was to identify these successional land-cover types and quantify their areal proportions in regions deforested during the past 37 years around the city of Kisangani, D.R. Congo. The fallow vegetation continuum was categorized
image of 2012. Areal proportions of successional land-cover types were then derived from the resulting land-cover map. The second aim of this study was to relate these areal proportions to time since deforestation, which is expected to influence fallow
landscapes. Landsat images of 1975, 1990, and 2001 were analyzed. Present-day mature tree fallow is less abundant on areas deforested during 1975-1990. The relative areal proportions were used to refine a deforestation scenario and apply it to existing data
Régime des pluies et déforestation en Amazonie Méridionale
Amazon Basin ; Brazil ; Climatic trend ; Deforestation ; Impact ; Pluviometry ; Precipitation ; Rainfall regime ; Statistical analysis ; Time series
élevée qu'elle agisse sur le régime des précipitations, contrairement à la forêt fragmentée en petites parcelles. La déforestation a ainsi pu contribuer à l'affaiblissement de la saison des pluies dans les zones fortement déboisées du Mato Grosso et du
Agriculture ; Bogotá ; Colombia ; Deforestation ; Ecosystem ; Land use ; Territorial planning ; Urbanization ; Water resources
to mitigate impacts such as deforestation. It demonstrates that the expansion of the agricultural frontier in zones that used to be forests or paramos has brought about the almost complete disappearance of buffer zones and triggered the deterioration
Accessibility ; Agricultural land use ; Deforestation ; Ecuador ; Infrastructure ; Land use ; Natural resources ; Oil industry ; Plant canopy ; Road network
-access and roadless. Spatial analysis findings suggest that areas of overlap where colonization zones, public-access roads and fertile soils meet are most prone to deforestation. Statistical findings from a linear regression model suggest
in the hinterland of the town of Itaituba, an important settlement in the middle Tapajós valley; (2) remote sensing of the evolution of road networks, which we then link to deforestation in a temporal analysis of emergent fragmentation patterns; and (3
In the 19th century deforestation in the Carpathians and the growing population made flood control and river regulation an urgent task in the Carpathian Basin. As a result of shrinking active floodplains and cut-offs, the natural sedimentation
Accumulation rate ; Alluvium ; C 14 dating ; Colluvium ; Deforestation ; Geochemistry ; Heavy metals ; Human impact ; Isotope analysis ; Loess ; Phosphorus ; Poland ; Stratigraphy ; Watershed
cours de l'Holocène, aussi bien pour les alluvions que pour les colluvions. La pression anthropique (déforestation) en est probablement la cause principale.
to soil conservation measures compared to soils of the inland plains. Farmers' local technique of making ridges and furrows is particularly effective. Deforestation for agriculture hence bears the risk of increasing soil erosion rates; however, this risk
ressources, en particulier la production de charbon de bois par les habitants des communautés voisines. Il démontre que cette activité a des impacts négatifs en matière de déforestation et de dégradation des terres. Il conclut que la gestion de la forêt doit
Les AA. analysent la requalification du Cerrado en biome lors de la Conférence sur le climat à Copenhague en 2009 et la transformation de cet espace mal défini en un enjeu international du changement climatique et de la lutte contre la déforestation
the fact that land degradation is primarily a physical process, but also they do injustice to adaptive ecosystem management by the local inhabitants. The review specifically questions the stereotypes of overpopulation, overgrazing, deforestation
Comparative study ; Cultivated land ; Deforestation ; Land use ; Mountain ; Nineteenth Century ; North Carolina ; Sediment budget ; Soil erosion ; Twentieth Century ; United States of America ; Watershed