Human population in the world is projected to grow from about 5.2 billion in 1990 to around 8.0–8.5 billion 35 years hence in 2025. About 44% of the world's population lived in an urban setting in 1990 compared with 34% in 1960. By 2025 the proportion will have grown to 60%. These demographic shifts have had, and will continue to have, major implications for the way in which food is produced and in the sustainability of cropping systems and protection of ecological resources. Particular attention is required to the type of agro-ecological zone and the influence of urbanization.
Get full access to this article
View all access options for this article.
References
1.
BelkK. E., Huerta-LeidenzN. O., and CrossH. R. (1990) Factors Involved in the Deforestation of Tropical Forests. Department of Animal Science, Texas A & M University, USA.
2.
Committee on Agricultural Sustainability for Developing Countries (1989) The Transition to Sustainable Agriculture: A Two Year Review of AID's Agricultural and Rural Development Programs and an Agenda for the 1990s. Washington, D.C., 1 December 1989.
3.
FAOProduction Yearbook, various issues.
4.
FAO (1982) Potential Population Supporting Capacities of Lands in the Developing World. Technical Report of the Project INT/75/P13, Rome.
5.
SimpsonJ. R. (1988) The Economics of Livestock Systems in Developing Countries. Westview Press, Boulder, Colorado, USA.
6.
SimpsonJ. R. (1993) Livestock Inventory and Feedstuffs Requirements in Southeast Asia and China: Projections to 2025. Food and Resource Economics Department International Working Paper Series IW93-1 (January), University of Florida, USA.
7.
SimpsonJ. R., and ConradJ. (1994) Central American Animal Agriculture in Relation to Natural Resources. Agricultural Systems44, 1–19 (in press).
8.
United Nations (1991) United Nations World Population Prospects. UN, New York, USA.
