Tropical forests in Asia, Africa and Latin America are being rapidly transformed through slash-and-burn. Traditionally, slash-and-burn is a system for land use — shifting cultiva-tion — based on alternating food cropping periods with periods of regrowth of vegetation (fallow). Increasing population pressure has shortened the fallow periods dramatically, making the system unsustainable in many areas. Slash-and-burn is also a technique to convert forests into permanent agricultural land, or into other land use practices, including large-scale tree crops (rubber, oil palm, timber). In Asia, shifting cultivation is becoming less common and much of the slash-and-burn is related to permanent conversion of forests by smallholders, large operators and government-sponsored resettlement projects. The consequences of this are devastating, in terms of climate change, soil erosion and degradation, watershed degradation and loss of biodiversity. The Alternatives to Slash-and-Burn Programme is built around two issues — the global environ-mental effects of slash-and-burn and the technological and policy options to alleviate those effects. The programme assumes that the development of agroforestry-based forms of intensified landuse as an alternative to slash-and-burn can help to alleviate poverty and improve human welfare. By identifying alternatives to slash-and-burn and providing options from which farmers can choose, the ASB programme aims to provide benefits at a range of scales, from household to global
Année de publication
1999
Auteurs
Langue
English
Mots clés
gardens, hills, land use, mountains
