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dc.contributor.author | Restrepo A., Juan D. | - |
dc.date.accessioned | 2021-10-15T19:37:40Z | - |
dc.date.available | 2021-10-15T19:37:40Z | - |
dc.date.issued | 2015-06-24 | - |
dc.identifier.uri | https://repositorio.accefyn.org.co/handle/001/858 | - |
dc.description.abstract | En la última década, la cuenca del río Magdalena ha experimentado un incremento en las tasas de erosión del orden del 34 %, pasando de 550 t km-2 a-1antes del año 2000 a 710 t km-2 a-1 en el periodo 2000-2010, con un aumento en el transporte total de sedimentos de 44 Mt a-1. El análisis de la variabilidad espacial de la producción de sedimentos indica que el 78 % de la cuenca se encuentra en estado crítico de erosión dada la pérdida de bosques primarios de más del 60 % en el periodo entre 1980 y 2010. Mediante la calibración del modelo BQART para el periodo de 1980 a 2010, que combina variables climáticas, hidrológicas, litológicas, morfométricas y del impacto humano por deforestación, se explicó el 86 % de la variabilidad del transporte de sedimentos en la cuenca. El 9 % del transporte de sedimentos acumulado de las tres últimas décadas se debió a la deforestación; cerca de 160 Mt de sedimentos se han generados por la deforestación entre el 2000 y el 2010. Los indicadores económicos del Magdalena en las seis últimas décadas señalan que las actividades agrícolas fueron la principal causa del cambio en el uso de los suelos y de la pérdida forestal. El deterioro de los suelos de la cuenca requiere de medidas a escala regional, y no solamente de planes de mitigación ante el cambio climático. | spa |
dc.description.abstract | During the last decade, the Magdalena River drainage basin has witnessed an increase in erosion rates of 34%, from 550 t km-2 y-1 before 2000 to 710 t km-2 y-1 for the 2000-2010 yr-period, and the average sediment load for the whole basin increased in 44 Mt y-1 for the same period. Sediment yield spatial analysis indicated that 78% of the catchment is under strong erosional conditions due to the clearance of more than 60% of the natural forest between 1980 and 2010. Sediment load simulation by using the BQART, a robust model that combines climatic, morphometric, hydrological, lithologic and human induced variables, and explains 86% of the sediment load variability, indicated that 9% of the combined sediment load during the last three decades was due to deforestation; about 160 Mt have been produced by forest clearance between 2000 and 2010. The trends in economic indicators show that agriculture was the main cause of land-use change and, consequently, of forest loss within the basin. Soil deterioration and increasing trends in erosion require capacity building in environmental governance in addition to climate change mitigation policies. | eng |
dc.format.extent | 18 páginas | spa |
dc.format.mimetype | application/pdf | spa |
dc.language.iso | spa | spa |
dc.publisher | Academia Colombiana de Ciencias Exactas, Físicas y Naturales | spa |
dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International | spa |
dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0/ | spa |
dc.title | El impacto de la deforestación en la erosión de la cuenca del río Magdalena (1980-2010) | spa |
dc.type | Artículo de revista | spa |
dcterms.audience | Estudiantes, Profesores, Comunidad científica | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.type.driver | info:eu-repo/semantics/article | spa |
dc.type.version | info:eu-repo/semantics/publishedVersion | spa |
dc.rights.creativecommons | Atribución-NoComercial 4.0 Internacional (CC BY-NC 4.0) | spa |
dc.identifier.doi | https://doi.org/10.18257/raccefyn.141 | - |
dc.subject.proposal | Río Magdalena | spa |
dc.subject.proposal | Magdalena River | eng |
dc.subject.proposal | Deforestacion | spa |
dc.subject.proposal | Deforestation | eng |
dc.subject.proposal | Transporte de sedimentos | spa |
dc.subject.proposal | Sediment load | eng |
dc.subject.proposal | Erosión | spa |
dc.subject.proposal | Erosion | eng |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | spa |
dc.relation.ispartofjournal | Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales | spa |
dc.relation.citationvolume | 39 | spa |
dc.relation.citationstartpage | 250 | spa |
dc.relation.citationendpage | 267 | spa |
dc.publisher.place | Bogotá, Colombia | spa |
dc.contributor.corporatename | Academia Colombiana de Ciencias Exactas, Físicas y Naturales | spa |
dc.coverage.region | Río Magdalena, Colombia | - |
dc.relation.citationissue | 151 | spa |
dc.type.content | DataPaper | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/ART | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | spa |
Appears in Collections: | BA. Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales |
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