Published online by Cambridge University Press: 11 August 2009
Introduction
In developing economies, especially those without oil and natural gas reserves, the most important source of natural wealth is agricultural land. In these economies, the agricultural land base is expanding rapidly through conversion of forests, wetlands and other natural habitat (Barbier 2005). During 1980–1990 over 15 million hectares of tropical forest were cleared annually and the rate of deforestation averaged 0.8 per cent per year (FAO 1993). Although over 1990–2000 global tropical deforestation slowed to less than 12 million ha per year, or an annual rate of 0.6 per cent, this trend reflects less deforestation mainly in Latin America and Asia. Forest clearing increased over 1990–2000 in Africa to over 4.8 million ha annually, or 0.8 per cent per year. Whereas deforestation has declined in Tropical South America, Central Africa and Southeast Asia, it has risen significantly in Tropical Southern, West and East Sahelian Africa (FAO 2001).
López (1998a, 1998b) identifies most of sub-Saharan Africa, parts of East and Southeast Asia and the tropical forests of South America as regions with ‘abundant land’ and open access resource conditions that are prone to agricultural expansion. This expansion is mainly due to the high degree of integration of rural areas with the national and international economy as well as population pressures. The poor intensification of agriculture in many tropical developing countries, where use of irrigation and fertiliser is low, is also an important factor (FAO 1997, 2003).
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.