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The Humid Tropics

  • David Grigg
Part of the Focal Problems in Geography book series

Abstract

There should be little difficulty in defining the humid tropics, for most authorities are agreed that this is the region where evergreen rain forest is the climax vegetation, a formation type which requires constantly high temperatures and a large annual rainfall evenly distributed throughout the year. Yet in practice there is considerable dispute about the limits of the humid tropics. On the margins of the true rain forest there is an increasing proportion of deciduous trees, and botanists differ on the boundary between the rain forest and semi-evergreen forest. Over much of the humid tropics the primary forest has been cleared and burned for cultivation, and the climax vegetation destroyed. Whilst the rain forest nominally requires abundant rainfall without a dry season, most parts of the humid tropics have one or more months when rainfall is less than the potential evapotranspiration.

Keywords

Soil Erosion Forest Cover Rain Forest Secondary Forest Primary Forest 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Notes

  1. 1.
    F. R. Fosberg, B. J. Gamier and A. W. Kuchler, ‘Delimitation of the Humid Tropics’, Geographical Review, vol. 51 (1961) 337–47.CrossRefGoogle Scholar
  2. 2.
    Glenn Trewartha, An Introduction to Climate (1954) 242.Google Scholar
  3. 3.
    Ooi Jin Bee, Land, People and Economy in Malaya (1963) p. 52.Google Scholar
  4. 4.
    Robert C. West, The Pacific Lowlands of Colombia (1957) p. 3.Google Scholar
  5. 10.
    K. J. Pelzer, Pioneer Settlement in the Asiatic Tropics (1945) p. 18.Google Scholar
  6. 11.
    Brian Hopkins, Forest and Savanna (1966) p. 40.Google Scholar
  7. 14.
    S. R. Eyre, Vegetation and Soils: A World Picture (1967) p. 216.Google Scholar
  8. 15.
    Ooi Jin Bee, ‘Rural Development in Tropical Areas, with Special Reference to Malaya’, Journal of Tropical Geography, vol. 12 (1959) 34.Google Scholar
  9. 16.
    Pierre Gourou, The Tropical World (1966) p. 8.Google Scholar
  10. 18.
    C. A. Fisher, South East Asia: A Social, Political, and Economic Geography (1964) p. 312.Google Scholar
  11. 20.
    V. Ignatieff and P. Lemos, ‘Some Management Aspects of the More Important Tropical Soils’, Soil Science, vol. 95, no. 4 (1963) 243–9.CrossRefGoogle Scholar
  12. J. Bennema, ‘The Red and Yellow Soils of the Tropical and Subtropical Uplands’, Soil Science, vol. 95 (1963) 250–7.CrossRefGoogle Scholar
  13. 25.
    G. F. Carter and R. L. Pendleton, ‘The Humid Soil: Process and Time’, Geographical Review, vol. 46 (1956) 488–507.CrossRefGoogle Scholar
  14. 27.
    R. Dudal and F. R. Moorman, ‘Major Soils of South-east Asia’, in R. Ho (ed.), Studies in the Geography of South East Asia (1964) p. 58.Google Scholar
  15. 28.
    F. Hardy, ‘Some Ecological Aspects of Tropical Pedology’, Malayan Journal of Tropical Geography, vol. 2 (1954) 6.Google Scholar
  16. 34.
    W. B. Morgan, ‘Agriculture in Southern Nigeria’, Economic Geography, vol. 35 (1959) 146.CrossRefGoogle Scholar
  17. 35.
    R. F. Watters, ‘The Nature of Shifting Cultivation: A Review of Recent Research’, Pacific Viewpoint, vol. 1, no. 1 (1960) 69–75.Google Scholar
  18. 37.
    Y. L. Lee, ‘Agriculture in Sarawak’, Journal of Tropical Geography, vol. 21 (1965) 26.Google Scholar
  19. 44.
    K. Buchanan, ‘Recent Developments in Nigerian Peasant Farming’, Journal of Tropical Geography, vol. 2 (1954) 25–6.Google Scholar
  20. 45.
    F. Jurion and J. Henry, ‘Cropping Systems in the Equatorial Forest Region of the Belgian Congo’, U.N. Symposium on the Conservation and Utilisation of Resources, vol. 6 (1951) 256–7.Google Scholar
  21. 46.
    H. R. Jarret, ‘The Oil-palm and its Changing Place in the Economy of Sierra Leone’, Geography, vol. 42 (1957) 51.Google Scholar
  22. 48.
    J. A. Tosti and Robert F. Voertman, ‘Some Environmental Factors in the Economic Development of the Tropics’, Economic Geography, vol. 40, no. 3 (1964) 199.Google Scholar
  23. 55.
    H. R. Jarret, ‘Rice Production in Sierra Leone’, Malayan Journal of Tropical Geography, vol. 8 (1956) 74–6.Google Scholar
  24. 58.
    M. Guillaume, ‘Potentialities and Problems in Tropical Regions’, United Nations Symposium on the Conservation and Utilisation of Resources, vol. 6 (1951) 574.Google Scholar
  25. 61.
    F. C. de Camargo, ‘Reclamation of the Amazonian Floodlands near Belém’, UN Symposium on the Conservation and Utilisation of Resources, vol. 6 (1951) 598–602.Google Scholar
  26. 63.
    E. C. Highbee, ‘Of Man and the Amazon’, Geographical Review, vol. 41 (1951) 401–20.CrossRefGoogle Scholar
  27. P. E. James, ‘Trends in Brazilian Agricultural Development’, Geographical Review, vol. 43 (1953) 301–28.CrossRefGoogle Scholar

Copyright information

© David Grigg 1970

Authors and Affiliations

  • David Grigg
    • 1
  1. 1.Department of GeographyUniversity of SheffieldUK

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