Agroforestry pathways for the intensification of shifting cultivation
Tóm tắt
As a system of land use which entails the deliberate association of trees with herbaceous field crops in time, shifting cultivation is one of the most ancient, widespread and, until recently, ecologically stable forms of agroforestry. However, under pressure of population and competing uses for land and labour, traditional swidden systems have been observed historically to undergo more or less predictable processes of intensification. Since shifting cultivation is an indigenous form of agroforestry, scientific agroforestry is not, strictly speaking, an ‘alternative’ to shifting cultivation, but rather a systematic approach to the recombination of its basic elements into more intensive, sustainable and politically viable forms of land use, whenever pressures signal the need for change in traditional swidden systems. Different agroforestry options open up from different stages of intensification in swidden systems. A review of evolutionary typologies of shifting cultivation gives rise to a framework for the identification of agroforestry interventions and development pathways appropriate to specific systems. technological proposals are limited to a short list of the most promising agroforestry interventions in ‘main sequence’ swidden systems. These include ‘integral taungya’, economically and biologically enriched fallows, variations on the “alley cropping” theme, and various tree crop alternatives to annual cropping systems. Examples and quantitative data are cited to substantiate the main hypotheses behind the proposals.
Tài liệu tham khảo
Agboola AA, Wilson, GF Getahun, A and Yamoah, CF (1982) Gliricidia sepium: a possible means to sustained cropping.In: LH McDonald (ed). Agro-forestry in the African Humid Tropics. United Nations University, Tokyo.
Allan W (1965) The African Husbandman. Oliver and Boyd, Edinburgh.
Barrau J (1971) Subsistence agriculture in Polynesia and Micronesia. Bishop Museum, Honolulu.
Benneh G (1972) Systems of agriculture in tropical Africa. Economic Geography 48(3): 244–257
Bishop JP (1983) Tropical forest sheep on legume forage/fuelwood fallows. Agroforestry Systems 1(2): 79–84.
Boonkird SA, Fernandes, ECM and Nair, PKR (1984) Forest villages: an agroforestry approach to rehabilitating forest land degraded by shifting cultivation in Thailand. Agroforestry Systems 2(2): 87–102.
Boserup E (1965) The Conditions of Agricultural Growth. Aldine, Chicago.
Boserup E (1981) Population and Technology. Basil Blackwell, Oxford.
Bowers RD (1982) Agricultural tree crops as a no-tillage system.In: LH MacDonald (ed). Agro-forestry in the African Humid Tropics. United Nations University, Tokyo.
Brookfield HC (1972) Intensification and disintensification in Pacific agriculture: a theoretical approah. Pacific Viewpoint 15: 30–48.
Carniero RL (1960) Slash and burn agriculture: a closer look at its implications for settlement patterns.In: AFC Wallace (ed). Man and Culture. University of Pennsylvania Press, Philadelphia.
Conklin HC (1957) Hanunóo Agriculture. FAO Forestry Development Paper No 12. FAO, Rome.
Conklin HC (1980) Ethnographic Atlas of Ifugao: A Study of Environment, Culture and Society in Northern Luzon. Yale University Press, New Haven and London.
Dijkman MJ (1950) Leuceana a promising soil erosion control plant. Economic Botany 4: 337–349.
Dobby EHG (1946) Some aspects of hue human ecology of south-east Asia. Geographical Journal (July-Sept): 40–54.
Douglas JS and Hart, RA de J (1976) Forest Farming. Watkins, London.
Dove MR (1983) Theories of swidden agriculture and the political economy of ignorance. Agroforestry Systems 1(2): 85–100.
Eder JF (1981) From grain crops to tree crops in the Cuyunon swidden system.In: H Olofson (ed). Adaptive Strategies and Change in Philippine Swidden-based Societies. Forest Research Institute, Los Baños, Philippines.
Enabor EE (1974) Socio-economic aspects of taungya in relation to traditional shifting cultivation in tropical developing countries.In: Shifting Cultivation and Soil Conservation in Africa. FAO Soils Bulletin No. 24. FAO, Rome.
FAO (1984a) Changes in Shifting Cultivation in Africa. FAO Forestry Paper No. 50. FAO, Rome.
FAO (1984b) Institutional Aspects of Shifting Cultivation in Africa FAO, Rome.
Felker P (1978) State of the Art:Acacia albida as a Complementary Permanent intercrop with Annual Crops. US Agency for International Development. Washington, DC.
Felker P and Bandurski, RJ (1979) Uses and potential uses of leguminous trees for minimal energy input agriculture. Economic Botany 33: 172–184
Fernandes ECM, Oktingati, A and Maghembe, J (1984) The Chagga homegardens: a multistoried agroforesty cropping system on Mt. Kilimanjo (Northern Tanzania). Agroforestry System (2): 73–86.
Foley G and Barnard, G (1984) Farm and Community Forestry. Earthscan Energy Information Programme Technical Report No. 3. International Institute for Environment and Development, London.
Fox JJ (1977) Harvest of the Palm: Ecological Change in Eastern Indonesia. Harvard University Press, Cambridge, Massachusetts and London.
Getahun A, Wilson, GF and Kang, BT (1982) The role of trees in farming systemsin the humid tropics.In: LH MacDonald (ed). Agro-forestry in the African Humid Tropics. United Nations University, Tokyo.
Gourou P (1966) The Tropical World. 4th edition. Longsman, London.
Grandstaff TB (1980) Shifting Cultivation in Northern Thailand: Possibilities for Development. United Nations University, Tokyo.
Greenland DJ (1974) Evolution and development of different types of shifting cultivation.In: Shifting Cultivation and Soil Conservation in Africa. FAO Soils Bulletin No 24. FAO, Rome.
Greenland DJ (1975) Bringing the green revolution to the shifting cultivator. Science 190(4217): 841–844.
Hoekstra DA (1983) An economic analysis of a simulated alley cropping system for semiaarid conditions, using micro computers. Agroforestry System 1(4): 335–346.
Hunink RBM and Stoffers, JW (1984) Mixed- and Forest Gardens on Central Java: An Analysis of Socio-Economic Factors influencing the Choice Between Different Types of Landuse. Department of Geography of Developing Countries. Utrecht University, Utrecht.
Huxley PA (1980) Agroforestry research: the value of existing data appraisal.In: T Chandler and D Spurgeon (eds). International Cooperation in Agroforestry. ICRAF, Nairobi.
Huxley PA and Raintree, JB (1983) Plant arrangement considerations.In: Draft Resources for Agroforestry Diagnosis and Design. Working Paper No. 7. ICRAF, Nairobi.
Johnson DV (1983) Multi-purpose palms in agroforestry: a classification and assessment. International Tree Crops Journal 2(3/4): 217–244.
Joosten JHL (1962) Wirtschafliche und agrarpolitische Aspekte tropischer Landbausystem. Institut für Landwirtschafliche Betriebslehre, Göttingen.
Kuile CHH ter (1983) The nature, extent and development problems of shifting cultivation. Expert Consultation on the Education, Training and Extension Aspects of Shifting Cultivation, 12–16 December. FAO, Rome.
Kunstadter P (1978) Alternatives for the development of upland areas.In: P Kunstadter, EC Chapman and S Sabhasri (eds). Farmers in the Forest: Economic Development and Marginal Agriculture in Northern Thailand. University of Hawaii Press, Honolulu.
Lagemann (1977) Traditional African Farming Systems in Eastern Nigeria. Weltforum Verlag, München.
Lanly JP (1983) The nature, extent and development problems associated with shifting cultivation in the tropics. Expert Consultation on the Education, Training and Extension Aspects of Shifting Cultivation. 12–16 December. FAO, Rome.
Lazier J, Getahun A and Velez, M (1982) The integration of livestock production in Agro-forestry.In: LH MacDonald (ed).Agro-forestry in the African Humid Tropics. United Nations University, Tokyo.
Lebar FM, Hickey GC and Musgrave JK (eds) (1964) Ethnic Groups of Mainland South-east Asia. Human Relations Area Files Press, New Haven.
Liyanage M de S, Tejwani KG and Nair KR (1984) Intercropping under coconuts in Sri Lanka. Agroforestry System 2(3): 215–228.
Metzner J (1981) Innovations in agriculture incorporating traditional production methods: the case of Amarasi (Timor). Applied Geography and Development 17: 91–107.
Mollison B and Holmgren D (1981) Permaculture One: A Perennial Agriculture for Human Settlements. International Tree Crops Institute, Winters, California.
Nair PKR (1979) Intensive Multiple Cropping with Coconuts in India. Verlag Paul Parey, Berlin and Hamburg.
Nair PKR and Fernandes ECM (1983) Agroforestry as an alternative to shifting cultivation. Informal Export Consulation on Alternatives to Shifting Cultivation, 22–25 February. FAO, Rome.
Ngambeki DS and Wilson GF (1984) Economic and On-Farm Evaluation of Alley Cropping with Leucaena Leucocephala. 1980–1983 Activity Consolidated Report. Farming Systems Program. International Institute of Tropical Agriculture, Ibadan.
Nye PH and Greenland DJ (1960) The Soil Under Shifting Cultivation. Commonwealth Bureau of Soils Technical Communication No 51. Commonwealth Agricultural Bureau, Farnham Royal, England.
Okigbo BN (1984) Cropping systems and rotations development for improving shifting cultivation and related intermittent production system in tropical Africa.In: improved Production Systems as an Alternative to Shifting Cultivation FAO Soils Bulletin No 53. FAO, Rome.
Okigbo BN and Lal R (1979) Soil fertility maintenance and conservation for improved agro-forestry system of the lowland humid tropics.In: HO Mongi and PA Huxley (eds). Soils Research in Agroforestry. ICRAF Nairobi.
Olofson H (1983) Indigenous agroforestry systems. Philippine Quarterly of Culture and Society 11: 149–174.
Pelzer KJ (1978) Swidden cultivation in Southeast Asia: historical, ecological, and economic perspectives.In: P Kunstadter, EC Chapman and S Babhasri (eds). Farmers in the Forest: Economic Development and Marginal Agriculture in Northern Thailand. University of Hawaii Press, Honolulu.
Prothero RM (ed) (1972) People and Land in Africa South of the Sahara. Oxford University Press, London.
Raintree JB (1983a) Strategies for enhancing the adoptability of agroforestry innovations. Agroforestry Systems 1(3): 173–188.
Raintree JB (1983) The concept of an optimal pathway of intensification.In: Draft Resources for Agroforestry Diagnosis and Design. Working Paper No 7. ICRAF Nairobi.
Raintree JB (1984) A diagnostic approach to agroforestrydesign.In: KF Wiessum (ed). Strategies and Designs for Afforestation, Reforestation and Tree Planting. PUDOC, Wageningen.
Raintree JB and Turay F (1980) Linear programming model of an experimental Leucaena-rice alley cropping system. IITA Research Briefs 1(4): 5–7.
Ruthenberg H (1971) Farming Systems in the Tropics. Clarenden Press, Oxford.
Salisbury RF (1962) From Stone to Steel. Cambridge University Press. London.
Seth SK (1981) India and Sri Lanka agroforestry. FAO/SIDA Forestry for Local Community Development Programme. FAO, Rome.
Smith JR (1950) Tree Trops: A permanent Agriculture. Devin Adair, New York.
Spencer JE (1966) Shifting Cultivation in Southeastern Asia. University of California Press, Berkeley, Los Angeles and London.
Stoler A (1978) Garden use and household economy in rural Java. Bulletin of Indonesian Economic Studies 14(2): 85–101.
Torquebiau E (1984) Man-made dipterocarp forest in Sumatra. Agroforestry Systems 2(2): 103–128.
Tosi JA Jr and Voertman RF (1964) Some environmental factors in the economic development of the tropics. Economic Geography 40(3): 189–205.
Unesco, UNEP and FAO (1978) Tropical Forest Ecosystems. Unesco, Paris.
Verimumbe I, Knipscheer HC and Enabor EE (1984) The economic potential of leguminous tree crops in zero-tillage cropping in Nigeria: a linear programming model. Agroforestry System 2(2): 129–138.
Waters RF (1960) The nature of shifting cultivation. Pacific Viewpoint 1: 59–99.
Weinstock JA (1983) Rattan: a complement to swidden agriculture. Economic Botany 37(1): 58–68.
Wiersum KF (1982) Tree gardening and taungya on Java: examples of agroforestry techniques in the humid tropics. Agroforestry Systems 1(1): 53–70.
Wijewardene R and Waidyanatha P (1984) Conservation Farming. Department of Agriculture of Sri Lanka and Commonwealth Consultative Group on Agriculture for the Asia-Pacific Region. Colombo.
Wilson GF and Kang BT (1980) Development of staple and productive biological cropping systems for the humid tropics.In: B Stonehouse (ed). Biological Husbandry: A Scientific Approach to Organic Farming. Butterworth, London.