Deforestation and the uses of wood in the Ecuadorian Andes
Andes ; Charcoal ; Deforestation ; Domestic use ; Ecuador ; Firewood ; Land use ; Living standard ; Mountain ; Rural economy ; Wood
Wood use is examined in four study areas in highland Ecuador in terms of its importance for the rural economy and its relation to deforestation. Concludes that the need for firewood does not explain deforestation; rather it responds to the demand
Deforestation in the Brazilian Amazon : a classroom project
Amazonas ; Brazil ; Deforestation ; Nature conservation ; Pedagogy ; Practical works ; Teaching of geography ; Tropical rain forest
Describes a three-week class project on tropical deforestation that addresses economic, social and political issues. Involves lectures, individual research by students, and a simulation in which students role-play a planning commission. - (DWG)
Deforestation caused by concession logging is often the result of harvest decisions which focus on short-run profits. A sequential-decision model is developed which focuses on a logger's annual decisions of whether or not remain in compliance
with the terms of a concession contract. Noncompliance is taken to result in deforestation. An optmal decision policy is employed to construct payoff incentives which encourage compliance.
Post-deforestation soil loss from steepland hillslopes in Taranaki, New Zealand
Déforestation ; Erosion des sols ; Glissement de terrain ; Mouvement de masse ; North Island ; Nouvelle-Zélande ; Précipitation ; Versant
Deforestation ; Landslide ; Mass movement ; New Zealand ; North Island ; Precipitation ; Slope ; Soil erosion
. Regolith depth and slope angle data were collected along 19 profile lines and 30 profile lines from steepland basins that had been deforested for 10 and 85 years, respectively.
Deforestation and regrowth in Miombo woodland, SW Tanzania
Cultivated plants ; Deforestation ; LANDSAT ; Land use ; MSS ; Reforestation ; Remote sensing ; Tanzania ; Tobacco
Deforestation is a general problem in Tanzania. One of the major reasons is tobacco farming. The study area is the major tobacco producing area in Mbeya Region, Chunya district. A procedure has been made for estimating deforestation and regrowth
Observations on deforestation and alpine turf destruction in the Central Wutai Mountains, Shanxi Province, China
China ; Deforestation ; Holocene ; Land use ; Mountain ; Pastureland ; Shanxi ; Soil erosion
Wutai Shan, a Buddhist pilgrimage site since the 5th century, has a long history of extensive deforestation and intensive land use. By the end of the 19th century, the mountains had become widely deforested. Radiocarbon dates on wood and charcoal
Africa ; Amazon Basin ; Brazil ; Climate ; Climatic variability ; Convection ; Deforestation ; Forest ; Impact ; Precipitation ; Temperature ; Tropical zone
L'influence de la déforestation sur le climat moyen serait un peu moindre qu'on ne l'imaginait, sauf en ce qui concerne l'élévation des températures maximales en saison sèche et la diminution de l'activité convective, particulièrement sur l'Amazonie
méridionale et l'ouest de l'Afrique équatoriale. Mais la déforestation accroît fortement la variabilité du climat sur la courte période. - (JPB)
Using participant observation, aerial photographs, and forest inventories, A. analyzes the social context of forest change in two neighboring indigenous communities in the Lake Patzcuaro Basin in west-central Mexico. Although deforestation
statistics and fuelwood demand suggest severe environmental degradation, there was an increase in tree cover, due to farm abondonment, and an increase in oak dominance. A. cautions against presuming there is widespread deforestation over the Mexican
Atmosphere ; Climatic variation ; Climatic warming ; Deforestation ; Energy balance ; Global change ; Impact ; Land atmosphere interaction ; Model ; Tropical rain forest ; Vegetation
This article reviews the physical links between tropical rain forests and the atmosphere, and considers the results of studies which address the climatic impacts of deforestation. There is a growing consensus that deforestation leads to warmer
, there is considerable uncertainty associated with the local and regional impacts of deforestation on the climate.
Etude historique d'un processus de déforestation dû à la consommation de charbon de bois pour les hauts-fourneaux de Rio Verde (Malaga). L'absence de modification des techniques a conduit à cette déforestation et à la faillite de la sidérurgie. (AAG).
Deforestation ; Environmental conservation ; Forest ; Geographical information system ; Land tenure ; Land use ; Resource management ; Western Samoa
Land use surveys made in the mid-1950s, late 1980s and in 1990 are used to map the change in forest cover over almost four decades. Logging has not been the major cause of deforestation. The major process involved has been clearing for agricultural
The effects of deforestation on slope and channel evolution in the tectonically active Darjeeling Himalaya
Alluvial cone ; Deforestation ; Fault ; Himalaya ; India ; Land use ; Mass movement ; Quaternary ; Slope ; Soil erosion ; Tectonics ; Vertical movement
The main indicators of Quaternary tectonic uplift are the young mountain slopes of the Darjeeling Himalaya. Owing to deforestation and extensive land use, the earlier natural tendency of a dominance of channel incision over slope degradation has
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
Bolivia ; Central America ; Deforestation ; Environment ; Environmental degradation ; Guatemala ; Honduras ; Land use ; Latin America ; Peru
Six substantive chapters by different authors on deforestation and Central America's beef exports; development and environmental destruction in Honduras; colonization and deforestation in northern Guatemala, land degradation in Bolivia
, international aid and environment in the Beni region of Bolivia, deforestation in Peru's Amazon Basin. These essays, plus two theoretical chapters, explicate a political ecology perspecive. - (DWG)
A survey of humid tropical forests in Jamaica, carried out by the A. in 1986, indicates a 3.3 % per annum rate of deforestation for 1980-86. But, despite significant commercial lumber production, large clear fellings are rare and most modification
of the forest is due to expansion of small-scale farming and pastoral activity. As uncontrolled deforestation is adversely affecting watersheds and inducing serious flooding, some form of control and management is urgently required. - (DB)