Home⇛Annals of Tropical Research⇛vol. 19 no. 1&2 (1999)

A Review Of Upland Agriculture, Population Pressure And Environmental Degradation In The Philippines

Victor B. Asio

 

Abstract:

Upland agriculture in the Philippines, which started in the Neolithic Age, has evolved from an environmentally-sound traditional shifting cultivation into a destructive form of agriculture. Population which increased from about 7 million at the turn of the century to 70 million at present, is considered as a major factor behind this change in form and extent of upland agriculture resulting in the degradation of the country's bio-physical environment. It is believed that the key to solving this ecological problem rests heavily on reduced population pressure, sound environmental management strategies, alternative livelihood for upland farmers and appropriate technologies that would suit the conditions in the uplands.



References:

  1. ASIO, V.B. 1987. Biocalcification and siltation in paddy soils. M.Sc. Thesis. University of the Philippines at Los Baños/The International Rice Research Institute, Laguna, Phil. 130 pp.
  2. ASIO, V.B. 1990. The soils of the SWCF project sites in Manjuyod, Negros: A consultancy report. Soil and Water Conservation Foundation, Inc. (Manjuyod Office). 31 pp.
  3. ASIO, V.B. 1996. Characteristics, weathering, formation and degradation of soils from volcanic rocks in Leyte, Philippines. Hohenheimer Bodenkundliche Hefte Vol. 33, Stuttgart. 209 pp.
  4. BARBOSA, A.C. 1986. The swidden cultivation of the warays of southwestern Samar and Northeastern Leyte. Leyte-Samar Studies Vol. 10:1-38.
  5. BLUM, W.E.H. 1983. Zur Bodennutzung der feuchtem Tropen, dargestellt am Beispiel des Amazonasgebietes Brasiliens Giessener Beitraege zur Entwicklungsforschung (University of Giessen, Germany), Reihe I, Band 9, pp. 7-25.
  6. CRAMB, R.A. and G.C.SAGUIGUIT, Jr. 1994. Socioeconomic evaluation of soil conservation technologies for upland farming systems in the Philippines: Project Overview. SEARCA-UQ Uplands Research Project Working Paper No. 1, 27 pp.
  7. CRUZ, M.C.J. 1986. Population pressure and migration in Philippine upland communities. In Man, Agriculture and the Tropical Forest. Fujisaka, S. et al. (Eds.). Winrock International Institute for Agricultural Development, Bangkok, Thailand. pp. 87-118.
  8. DARGANTES, B.B., V.B. ASIO and M.J. CENIZA. 1995.Socio-ecological aspects of forest cultivation in Leyte, Philippines. Proc. Int. Congr. Soils Trop. For. Ecosyst. Vol. 8, Mulaworman Univ. Press, Indonesia. pp. 213-219.
  9. DE HAEN, H. and R. SAIGAL. 1992. Agricultural growth and the environment: Trade-offs and complementarities. Quart. J. Int. Agric. 31: 321-339.
  10. DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES (DENR). 1990. The Philippine environment in the eighties. Environmental Management Bureau, Diliman, Q.C.
  11. DUBOIS, R. 1990. Soil erosion in a coastal river basin: A case study from the Philippines. University of Chicago Geography Research Paper No. 232, The University of Chicago, Committee on Geographical Studies. 135 pp.
  12. DUDAL, R. 1986. Bodenschutz in globaler Sicht. In Bodenschutz. Hohenheimer Arbeiten (University of Hohenheim, Germany). pp. 9-22.
  13. DUDAL, R. 1988. Die Bedeutung der Tropen und Subtropen als Standort für die landwirtschaftliche Produktion-ihre Rolle bei der Welternaehrung-Potential und Probleme inher Nutzung. Kali-Briefe (Buntehof) 19: 107-116.
  14. ELLER, E. and V.B. ASIO. 1991. The flash-flood tragedy of Ormoc: A short analysis from a physio-geographical view. Giessener Beitraege zur Entwicklungsforschung (University of Giessen, Germany), Reihe I. Band 19: 115-125.
  15. EL-SWAIFY, S.A. and E.W. DANGLER. 1982. Rainfall erosion in the tropics: A state-of-the-art. In Soil erosion and conservation in the tropics. ASA Special Publication No. 43. Madison, Wisconsin. pp. 1-25.
  16. FOOD AND AGRICULTURE ORGANIZATION (FAO). 1970. Production Yearbook, Vol. 24.
  17. FAO. 1975. Production Yearbook, Vol. 29.
  18. FAO. 1990. Production Yearbook, Vol. 44.
  19. FUJISAKA, S., P.E. SAJISE and R.A.DEL CASTILLO (Eds.). 1986. Man, Agriculture and the Tropical Forest. Winrock International Institute for Agricultural Development, Thailand. 363 pp.
  20. GIFFORD-PALGRAVE, W. 1973. Life in the Philippines one hundred years ago. J.B. Vargas Filipiniana Foundation, Contribution tothe Philippine History, Reprint Series II. 65 pp.
  21. HAMILTON, L.S. 1991. Tropical forests: Identifying and clarifying issues. Unasylva 166, 42: 19-27.
  22. HOMER-DIXON, T.F., J.H. BOUTWELL and G.W. RATHJENS. 1993 Environmental change and violent conflict. Scientific American 268: 16-23.
  23. KOLB, A. 1942. Die Philippinen. K.F. Koehler Verlag, Leipzig. 503 pp.
  24. LAL, R. 1986. Conversion of tropical rainforest: Agronomic potential and ecological consequences. Adv. Agron. 39: 173-264.
  25. LONGMAN, K.A. and J. JENIK. 1987. Tropical forest and its environment. 2d ed. Longman Scientific and Technical, Essex, England, and John Wiley & Sons, New York. 347 pp.
  26. LUGO, A.E. and S. BROWN. 1993. Management of tropical soils as sinks or sources of atmospheric carbon. Plant and Soil 149: 27-41.
  27. MANNION, A.M. 1991. Global environmental change. Longman Scientific and Technical, Essex, England, and John Wiley & Sons, New York. 389 pp.
  28. MOLL, W. 1980. Der Verwitterungszustand des Bodens in den Tropen als begrenzender Faktor der Nutzung. Giessener Beitraege zur Entwicklungsforschung (University of Giessen, Germany), Reihe I. Band 9. pp. 87-97.
  29. MYERS, N. 1988. Environmental degradation and some economic consequences in the Philippines. Environ. Conserv. 15: 205-214.
  30. RUSSEL, S. 1986. Mountain people in the Philippines: Ethnographic contributions to upland development. In Man, Agriculture and the Tropical Forest. Fujisaka, S. et al. (Eds.). Winrock International Institute for Agricultural Development, Bangkok, Thailand. pp. 24-86.
  31. SAJISE, P.E. 1986. The changing upland landscape. In Man, Agriculture and the Tropical Forest. Fujisaka, S. et al. (Eds.). Winrock International Institute for Agricultural Development, Bangkok, Thailand. pp. 13-42.
  32. SAJISE, P.E. 1991. Environmental impact of agriculture. In Biotechnology for Agriculture and its Effect on the Environment in Developing Countries. Natl. Acad. Sci. Tech., Phil. pp. 49-67.
  33. SANGINGA, N., K. MULONGOY and M.J. SWIFT. 1992.Contribution of soil organisms to the sustainability and productivity of cropping systems in the tropics. Agric. Ecosyst. Environ. 41: 135-152.
  34. SCHOLZ, U. 1982. Decrease and revival of shifting cultivation in the tropics of South-East Asia: The examples of Sumatra and Thailand. Appl. Geogr. Dev. 20:32-45.
  35. SCHOLZ, U. 1986a. Regional overview of environmental and socio-economic aspects of tropical deforestation in the Asia and Pacific Region. In Environmental and Socio-eonomic Aspects of Tropical Deforestation in Asia and the Pacific. Scholz, U. (Ed.). UN Economic and Social Commission for Asia and the Pacific, Bangkok, Thailand. pp. 5-24.
  36. SCHOLZ, U. 1986b. Deforestation in the Asian Tropics: Causes and Consequences. ASIEN, Deutsche Zeitschrift fur Politik, Wirtschaft und Kultur Nr. 21:29.
  37. SCHOLZ, U. 1991. Ueberlegungen zum Agrarpotential und zur Tragfaehig keit Tropischer Regenwaldgebiete. Giessener Beitraege zur Entwicklungsforschung (University of Giessen, Germany), Reihe 1, Band 19. pp. 41-53.
  38. SCOTT, W.H. 1984. Prehispanic source materials for the study of Philippine History Rev. ed. New Bay Publ., Quezon City, Phil. 196 pp.
  39. SCOTT, L.T., C.A. PALM and P.A. SANCHEZ. 1991Agroforestry in acid soils of the humid tropics. Adv. Agron. 45: 275-301.
  40. THENG, B.K.G. 1991. Soil science in the tropics: The next 75 years. Soil Sci. 151: 76-89.
  41. VILLAVICENCIO, V. 1987. Philippines. In Environmental Management in Southeast Asia. Lin Sien, C. (Ed.). Natl. Univ. of Singapore. pp. 77-107.
  42. VOGGESBERGER, M. and J. MARGRAF. 1988. Ifugao Reisterrassen: Agraroekologische Untersuchungen im Bergland der Philippinen. PLITS (University of Hohenheim, Germany) 6(3): 138.
  43. VON BRAUN, J. 1992. Agricultural growth, environmental degradation, poverty and nutrition: Links and policy implications. Quart. J. Int. Agric. 31: 341-363.

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