This book has been developed from a workshop on Technological change in agriculture and tropical deforestation organised by the Center for International Forestry Research and held in Costa Rica in March, 1999. It explores how intensification of agriculture affects tropical deforestation using case studies from different geographical regions, using different agricultural products and technologies and in differing demographic situations and market conditions. Guidance is also given on future agricultural research and extension efforts.

Covering an area of over 130 million km2 spanning the Mediterranean, equator and tropics, the African continent features a spectacular geographic diversity. Consequently, it is characterised by extremely variable climatic, edaphic and ecological conditions, associated with a wide range of natural vegetation and wildlife, as well as human population density, crops and livestock. In this book, Henry Le Houérou presents his bioclimatic and biogeographic classification of Africa. The extensive data provide the basis for comparisons between various African regions, and with regions on other continents such as Latin America or the Indian subcontinent. The results constitute a rational basis for national, regional and sub-regional rural development planning, and for agricultural research dealing with aspects such as plant and animal introductions, the extrapolation or interpolation of experimental or developmental findings, and ecosystems dynamics. Possible problems of applications are also examined.

What do peasants do in the face of severe food crisis and ecological stress, and how do they manage to survive on their own? This study revolves around a case study conducted by the author in the awraja (district) in the Ambassel Wollo province in northeastern Ethiopia. This is in the region that was hit hardest by the 1984-85 famine, which Rahmato calls "the worst tragedy rural Ethiopia had ever experienced". The author also critically examines other literature on famine response. The focus of this study is on what happens before famine comes, and how the peasants prepare for it. From a wealth of evidence, the author concludes that the seeds of famine are sown during the years of recovery.