Palabras clave
Geomorfología
Antropogeomorfología
Cordillera Central colombiana
Antrosoles
Etnoecología
Degradación ambiental
Cómo citar
Resumen
escrito por un geólogo candidato a PhD de la Universidad de Florida y un ingeniero agrónomo, analiza la erosión del suelo como fenómeno geomorfológico natural intensificado por la acción humana. Los autores presentan hallazgos de termocronología aplicados al Macizo Central Antioqueño, según los cuales la erosión moderna podría ser tres órdenes de magnitud mayor que la erosión promedio geológica del Neógeno, y citan estimaciones según las cuales la humanidad moviliza anualmente unas 50 gigatoneladas de tierra, frente a las 14 gigatoneladas que movilizan los ríos del mundo. El texto contextualiza la problemática de los Andes colombianos, donde los ríos Magdalena y Cauca presentan cargas de sedimentos comparables a las del Ganges, y concluye con un llamado a incorporar la etnoecología en los currículos académicos, señalando la existencia de antrosoles como la terra preta amazónica.
Referencias
BROWN, R.W., Summerfield, M.A., and Gleadow, A. 1994. Apatite fission track analysis: its potential for the estimation of denudation rates and implications for models of long-term landscape development. In Processes, models, and theoretical geomorphology, ed. M.J. Kirkby, pp. 23-53. New York: John Willey & Sons.
CAO Z. H., Ding J. L., Hul Z. Y., Knicker H., Kógel-Knabner l., Yang] L. Z., Yin1 R., Lin X.G., and Dong Y.H. , 2003. Ancient paddy soils from the Neolithic age in Chinas Yangtze River Delta. Naturwissenschaften, v. 93, no. 5, p. 232-236.
CONKLIN H.C., 1957. Hanunóo Agriculture: A Report on an Integral System of Shifting Cultivation in the Philippines. Food and Agriculture Organization of the United Nations, 275 p.
CONNOR DP. y Mínguez 1. 2006. En Looking at Biofuiels and Bioenergy (Editado por Kavanagh E.). Scinece v. 312, p. 1743-1748.
CHOMSKY N., Dieterich H, Glasbeek D. y Sempill J., 1999. Latin America: From Colonization to Globalization, Ocean Press, 72 p.
DOUGLAS, I. 1967. Man, vegetation and the sediment yield of rivers: Nature, v. 215, pp. 925-928. EDDY J. 1993. A Fragile Seam of Dark Blue Light. En: Proceedings of the Global Change Research Forum, U.S. Geological Survey Circular 1086, p. 15. EL SWAF!I. S.A., Dnagler E.W., y Armstrong C.L. 1982. Soil Erosion by Water in the Tropics. HITAHR, University of Haway, Research Extension Series no. 024, 163 p.
GOUDIE, A. 2000. The human impact on the natural environment. Sth edition, 527 p. Cambridge, Massachusetts: The MIT Press.
HAFF P.K., 2003. Neogeomorphology, Prediction and the Anthropic Landscape, p. 15-26. In Prediction in Geomorphology, Wilcock P.R. e Iverson R.M. (Ed.), Geophysical Monograph Series, American Geophysical Union, Washington, 256 p.
HARDIN, G, 1968. The tragedy of the commons. Science. Vol. 162, pp. 1243-1248.
ILLICH, l. 1968, Deschooling Society. Marion Boyars Publishers, 150 p.
LONG E. LeR. , 1992. Higher Education as a Moral Enterprise.
Georgetown University Press, Washington. P. 221. LUBCHENCO, J. (1998). Entering the century of the environment: A new social contract for science. Science, Vol. 279, pp. 491-497.
MILLIMAN, J.D. y Meade 1983. World-wide delivery ofriver sediment to the ocean. Journal of Geology, v. 91, pp.1-21.
PIMENTEL D., C. Harvey; P. Resosudarmo; K. Sinclair; D. Kurz; M. McNair; S. Crist; L. Shpritz; L. Fitton; R. Saffouri; R. Blair. (1995). Environmental and Economic Costs of Soil Erosion and Conservation Benefits. Science. Vol. 267, February 24, pp. 1117-1123.
POPENOE H., 2001, Comunicación personal. Curso de Etnoecología, Universidad de Florida, otoño 2001.
REVISTA AMBIENTAL RENARD, K.G, Foster, GR., Weesies, GA., McCool, D.K. y Yoder, D.C. 1997, Predicting soil erosion by water: a guide to conservation planning with the revised Universal Soil Loss Equation (RUSLE), USDA, Agricultural Handbook 703, 384 pp.
RESTREPO J.D., Kjerfve B., Hermelin M. and Restrepo J.C. 2006. Factors controlling sediment yield in a major South American drainage basin: the Magdalena River, Colombia. Journal of Hydrology, v. 316, pp. 213-232. RICHTER D.D. y Markewitz D. ,2001, Understanding Soil Change. Soil Sustainability over Millenia, Centuries, and Decades, Cambridge University Press, 255 p.
SLAYMAKER, O. (Editor), 2000, Geomorphology, Human Activity, and Global Environmental Change, Chichester, 322 p.
SMITH, N.J.H., 1980, Anthrosols and human carrying capacity in Amazonia. Annals of the Association of American Geographers, v. 70, n. 4, pp. 553-566.
SUMMERFIELD M.A., 2005. 4 tale of two scales, or the two Geomorphologies. Trans. Inst. Br. Geogr., No. 30, pp. 402-415.
THOMAS, M.F., 1994. Geomorphology in the tropics. A study of denudation and weathering in low latitudes,. New York: John Wiley and Sons, 482 p.
THORNES, J. B. (Editor), 1990. Vegetation and erosion: processes and environments, British Geomorphological Research Group Symposia Series. 536 p. New York: John Willey and Sons. UNEP; 2002. Global Environmental Outlook 3. Earthscan Publications, p. 445.
WELLS E.C., TERRY R.E. y PARNELL J.J., 2000. Chemical Analyses of Ancient Anthrosols in Residential Areas at Piedras Negras, Guatemala. Journal of Archaeological Science v. 27, pp. 449-462.
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Derechos de autor 2006 Sergio Restrepo; Miguel Restrepo