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Measuring Tropical Deforestation: Development of the Methods

Published online by Cambridge University Press:  24 August 2009

Mary W. Downton
Mary W. Downton
Affiliation:
Associate Scientist, Environmental and Societal Impacts Group, National Center for Atmospheric Research*, Boulder, Colorado 80307-3000, USA.
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Extract

Estimates of the rate and extent of tropical deforestation differ widely. The accuracy of the estimates for many countries has improved greatly during the last decade, especially with increased use of satellite data and advancements in analysis techniques. A good basis for ongoing global monitoring of tropical forests has been established by the FAO in its Forest Resources Assessment for 1990 (though data for some countries are still inadequate). The FAO assessment estimates that over one million km2 of the Earth's tropical rain-forest and moist deciduous forest was destroyed during 1981–90, representing an annual deforestation rate of 0.75% of such forests throughout the decade.

This paper traces the controversy over measurements of deforestation in Brazil's Legal Amazon and the resulting confusion and exaggeration of research findings (in both directions). Some widely-cited estimates are highly inaccurate, indicating a need for critical evaluation of any estimates that are used. A substantial narrowing of the range of estimates is found in recent studies. Landsat data indicate that the deforestation rate in the Legal Amazon declined considerably from 1988 to 1991.

Type
Main Papers
Information
Environmental Conservation , Volume 22 , Issue 3 , Autumn 1995 , pp. 229 - 240
Copyright
Copyright © Foundation for Environmental Conservation 1995

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References

Aldhous, P. (1993). Tropical deforestation: not just a problem in Amazonia. Science, 259 (March 5), p. 1390, illustr.CrossRefGoogle Scholar
Belward, A.S. (1991). Remote sensing for vegetation monitoring on regional and global scales. Pp. 169–87 illustr. in Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries (Eds Belward, A.S. & Valenzuela, C.R.). Kluwer Academic Publishers, Dordrecht, The Netherlands: xii + 506 pp., illustrCrossRefGoogle Scholar
Brown, S. & Lugo, A.E. (1992). Aboveground biomass estimates for tropical moist forests of the Brazilian Amazon. Interciencia, 17(1), pp. 8–18, illustr.Google Scholar
Chomentowski, W., Salas, B. & Skole, D. (1994). Landsat Pathfinder project advances deforestation mapping. GIS World, 7(4), pp. 34–8, illustr.Google Scholar
Churchill, P.N. & Sieber, A.J. (1991). The current status of ERS-1 and the role of radar remote sensing for the management of natural resources in developing countries. Pp. 111–43 illustr. in Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries (Eds Belward, A. & Valenzuela, C.R.). Kluwer Academic Publishers, Dordrecht, The Netherlands: xii + 506 pp., illustr.CrossRefGoogle Scholar
Corbley, K.P. (1994). New technology expands application of aerial videography. Earth Observation Magazine, 3(3), pp. 57–8, illustr.Google Scholar
Cross, A.M., Settle, J.J., Drake, N.A. & Paivinen, R.T.M. (1991). Subpixel measurement of tropical forest cover using AVHRR data. International Journal of Remote Sensing, 12(5), pp. 1119–29, illustr.CrossRefGoogle Scholar
Dozier, J. & Moore, B. III (1992). EOS: science and policy priorities for remote sensing technology. Geotimes, 37(6), pp. 12–5, illustr.Google Scholar
FAO (1988). An Interim Report on the State of Forest Resources in the Developing Countries. Food and Agriculture Organization of the United Nations, Rome, Italy: illustr. [not available for checking].Google Scholar
FAO (1993 a). Forest Resources Assessment 1990: Tropical Countries. (FAO Forestry Paper 112.) Food and Agriculture Organization of the United Nations, Rome, Italy: 61 pp. + annexes, illustr.Google Scholar
FAO (1993 b). Report of the 11th Session of the Committee on Forestry (Rome, 8–12 March 1993). Food and Agriculture Organization of the United Nations, Rome, Italy: 13 pp. + appendixes.Google Scholar
Fearnside, P.M. (1982). Deforestation in the Brazilian Amazon: how fast is it occurring? Interciencia, 7, pp. 82–8, illustr.Google Scholar
Fearnside, P.M. (1989). Deforestation in Brazilian Amazonia: the rates and causes of forest destruction. Ecologist, 19(6), pp. 214–8, illustr.Google Scholar
Fearnside, P.M. (1990). The rate and extent of deforestation in Brazilian Amazonia. Environmental Conservation, 17, pp. 213–26, illustr.CrossRefGoogle Scholar
Fearnside, P.M., Tardin, A.T. & Filho, L.G. Meira (1990). Deforestation Rate in Brazilian Amazonia. Instituto de Pesquisas Espaciais (INPE), São Paulo, Brazil: 8 pp., illustr.Google Scholar
Fearnside, P.M. (1993). Deforestation in Brazilian Amazonia: the effect of population and land tenure. Ambio, 22(8), pp. 537–45, illustr.Google Scholar
Fearnside, P.M. (1995). Hydroelectric dams in the Brazilian Amazon as sources of ‘greenhouse’ gases. Environmental Conservation, 22(1), pp. 7–19, 6 figs and 11 tables.CrossRefGoogle Scholar
Grainger, A. (1993). Rates of deforestation in the humid tropics: estimates and measurements. The Geographical Journal, 159, pp. 33–44.CrossRefGoogle Scholar
Green, K. (1992). Spatial imagery and GIS: integrated data for natural resource management. Journal of Forestry, 90(11), pp. 32–6, illustr.Google Scholar
Hill, J. (1991). Remote sensing systems: sensors and platforms. Pp. 55–70 illustr. in Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries (Eds Belward, A.S. & Valenzuela, C.R.). Kluwer Academic Publishers, Dordrecht, The Netherlands: xii + 506 pp., illustr.CrossRefGoogle Scholar
Hoffer, R.M. (1984). Remote sensing to measure the distribution and structure of vegetation. Pp. 131–59 in The Role of Terrestrial Vegetation in the Global Carbon Cycle: Measurement by Remote Sensing (Ed. Woodwell, G.M.). (SCOPE 23.) JohnWiley & Sons, New York, NY, USA: xvii + 247 pp., illustr.Google Scholar
Holden, C. (1987). World Bank launches new environment policy. Science, 236, p. 769, illustr.CrossRefGoogle ScholarPubMed
INPE (1992). Deforestation in Brazilian Amazonia, São José Dos Campos, S.P., Brazil: 2 pp., illustr.Google Scholar
Lambin, E.F. (1994). Modelling Deforestation Processes: A Review. European Commission. Luxembourg: 113 pp., illustr.Google Scholar
Lanly, J.P. (1982). Tropical Forest Resources. Food and Agriculture Organization of the United Nations, Rome, Italy: 106 pp., illustr.Google Scholar
Looyen, W.J., Zeppenfeldt, F.O., Venema, J.C., Burg, G. van der, Hoekman, D.H., Sanden, J.J. van der, Reichert, P.G. & Westinga, E. (1993). FAME: A forest assessment and monitoring environment scenario. Pp. 1146–8 in Better Understanding of Earth Environment Vol. III. (Proc. IGARSS'93) Tokyo, Japan: pp. 937–1563 of 4-vols set.Google Scholar
Mahar, D.J. (1989). Government Policies and Deforestation in Brazil's Amazon Region. The World Bank, Washington, DC, USA: 156 pp., illustr.Google Scholar
Malingreau, J.P. (1991). Remote sensing for tropical forest monitoring: an overview. Pp. 253–78 illustr. in Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries (Eds Belward, A.S. & Valenzuela, C.R.). Kluwer Academic Publishers, Dordrecht, The Netherlands: xii 506 pp., illustr.CrossRefGoogle Scholar
Malingreau, J.P., & Tucker, C.J. (1988). Large-scale deforestation in the Southeastern Amazon Basin of Brazil. Ambio, 17, pp. 49–55, illustr.Google Scholar
Matson, M. & Dozier, J. (1981). Identification Of subresolution high temperature sources using a thermal IR sensor. Photogrammetric Engineering and Remote Sensing, 47(9), pp. 1311–8, illustr.Google Scholar
Monbiot, G. (1991). Tips for the trees. Geographical Magazine, 11, pp. 22–5, illustr.Google Scholar
Motta, R. Serôa da (1994). Current policy issues concerning tropical deforestation in Brazil. Pp. 113–25 in Creeping Environmental Phenomena and Societal Responses to Them (Ed. Glantz, M.H.) (Workshop proceedings.) National Center for Atmospheric Research, Boulder, Colorado, USA: 204 pp., illustr.Google Scholar
Myers, N. (1980). Conversion of Tropical Moist Forests, National Academy of Sciences, Washington, DC, USA: 205 pp., illustr.Google Scholar
Myers, N., (1989). Deforestation Rates in Tropical Forests and their Climatic Implications. Friends of the Earth, London, England, UK: 78 pp.Google Scholar
Neto, R.B. (1989). Disputes about destruction. Nature (London), 338 (April 13), p. 531, illuslr.Google Scholar
Parisi, P. & Glantz, M.H. (1992). Deforestation and public policy. The World and 1, 11, pp. 270–7, illustr.Google Scholar
Park, C.C. (1992). Tropical Rainforests. Routledge, London, England, UK: 188 pp., illustr.Google Scholar
Rasch, H. (1994). Mapping of vegetation, land cover, and land use by satellite — experience and conclusions for future project applications. Photogrammetric Engineering and Remote Sensing, 60(3), pp. 265–71, illustr.Google Scholar
Robinson, J.M. (1991). Fire from space: global fire evaluation using infrared remote sensing. International Journal of Remote Sensing, 12, pp. 3–24, illustr.CrossRefGoogle Scholar
Sader, S.A., Stone, T.A. & Joyce, A.T. (1990). Remote sensing of tropical forests: an overview of research and applications using non-photographic sensors. Photogrammetric Engineering and Remote Sensing, 56(10). pp. 1343–51.Google Scholar
Salati, E. & Vose, P.B. (1983). Depletion of tropical rain forests. Ambio, 12(2), pp. 67–71, illustr.Google Scholar
Salati, E. (1987). The forest and the hydrological cycle. Pp. 273–96 illustr. in The Geophysiology of Amazonia (Ed. Dickinson, R.E.). Wiley, New York, NY, USA: xvii + 526 pp., illustr.Google Scholar
Setzer, A.W. (1991). Amazonia biomass burnings in 1987 and an estimate of their tropospheric emissions. Ambio, 20(1), pp. 19–22, illustr.Google Scholar
Setzer, A.W., Pereira, M.C., Pereira, A.C. Jr. & Almeida, S.A.O. (1988). Relatorio de Atividades do Projeto IBDF-INPE ‘SEOE’ — Ano 1987. (INPE-4534-RPE/565.) Instituto de Pesquisas Espaciais, São Paulo, Brazil: 48 pp., illustr.Google Scholar
Skole, D. & Tucker, C. (1993). Tropical deforestation and habitat fragmentation in the Amazon: satellite data from 1978 to 1988. Science, 260(06 25), pp. 1905–10, illustr.CrossRefGoogle ScholarPubMed
Sommer, A. (1976). Attempt at an assessment of the world's tropical forests. Unasylva, 28, pp. 5–24.Google Scholar
Trapasso, L.M. (1992). Deforestation of the Amazon — a Brazilian perspective. GeoJournal, 26(3), pp. 311–22, illustr.CrossRefGoogle Scholar
Woodwell, G.M. (1978). The carbon dioxide question. Scientific American, 238(1), pp. 34–43, illustr.CrossRefGoogle Scholar
Woodwell, G.M., Houghton, R.A. & Stone, T.A. (1986). Deforestation in the Brazilian Amazon Basin measured by satellite imaginery. Pp. 23–32 illustr. in Tropical Rain Forests and the World Atmosphere (Ed. Prance, G.T.). AAAS Selected Symposium 101, Westview Press, Boulder, Colorado, USA: xxi + 105 pp., illustr.Google Scholar
World Resources Institute (1990). World Resources 1990–91. Oxford University Press, New York, NY, USA: 383 pp., illustr.Google Scholar
World Resources Institute (1992). World Resources 1992–93. Oxford University Press, New York, NY, USA: 385 pp., illustr.Google Scholar