<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1794-6190</journal-id>
<journal-title><![CDATA[Earth Sciences Research Journal]]></journal-title>
<abbrev-journal-title><![CDATA[Earth Sci. Res. J.]]></abbrev-journal-title>
<issn>1794-6190</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-61902022000400271</article-id>
<article-id pub-id-type="doi">10.15446/esrj.v26n4.103275</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Estimation of soil losses due to water erosion in the Dagua River Basin, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Estimación de perdidas de suelo causadas por la erosión del agua en la cuenca del Río Dagua, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez López]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Menjivar Flóres]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calero Mosquera]]></surname>
<given-names><![CDATA[Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>26</volume>
<numero>4</numero>
<fpage>271</fpage>
<lpage>278</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-61902022000400271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-61902022000400271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-61902022000400271&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The Dagua river basin, in Colombia, is the most important source of water for the Valle del Cauca ecosystem, however, due to poor agricultural practices, it has been affected by water erosion. This study aimed at estimating soil erosion in the Dagua river basin, using the universal soil loss equation (USLE). The results show that most of the area presents erosivities that are between 1000-5000 MJ.mm.ha-1, corresponding to low and very low categories. On the other hand, erodibility ranged from 0.143 to 0.842 t. ha.h. MJ-1 mm-1 ha-1, which is framed in the categories from weak to extremely erodable, where the low to medium category predominates. Regarding soil losses due to erosion, it was found that more than 20% of each of the municipalities of Dagua, Restrepo, La Cumbre, and Vijes, showed high and very high erosion, particularly in the areas with bare soils and crops such as pineapple, contribute strongly, sometimes reaching over 1000 t ha-1 yr-1. Therefore, it is important to promote practices such as contour or contour planting, integrated crop cover management, land uses that integrate trees, and in more critical cases to consider ecological restoration processes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La cuenca del río Dagua, Colombia, es la fuente de agua más importante para el ecosistema del Valle del Cauca, sin embargo, debido a las malas prácticas agrícolas, se ha visto afectada por la erosión hídrica. El objetivo de este estudio fue estimar la erosión del suelo en la cuenca del río Dagua, utilizando la ecuación universal de pérdida de suelo (USLE). Los resultados muestran que la mayor parte del área presenta erosividades que se encuentran entre 1000-5000 MJ.mm.ha-1, correspondientes a categorías bajas y muy bajas. Por otro lado, la erodabilidad osciló entre 0,143 y 0,842 t. ha.h. MJ-1 mm-1 ha-1, lo que se enmarca en las categorías de débil a extremadamente erodable, donde predominó la categoría baja a media. En cuanto a las pérdidas de suelo por erosión, se encontró que más del 20% de cada uno de los municipios de Dagua, Restrepo, La Cumbre y Vijes, presentaron erosión alta y muy alta, y en particular las áreas con suelos desnudos y cultivos agrícolas como la piña, contribuyeron fuertemente, alcanzando en ocasiones más de 1000 t ha-1 año-1. Por lo tanto, es importante promover prácticas como la siembra en contorno o contorno, el manejo integrado de la cobertura de cultivos, los usos de la tierra que integren árboles y, en casos más críticos, considerar procesos de restauración ecológica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Basin]]></kwd>
<kwd lng="en"><![CDATA[Erodibility]]></kwd>
<kwd lng="en"><![CDATA[Soil conservation]]></kwd>
<kwd lng="en"><![CDATA[Soil degradation]]></kwd>
<kwd lng="en"><![CDATA[USLE]]></kwd>
<kwd lng="es"><![CDATA[Cuenca]]></kwd>
<kwd lng="es"><![CDATA[Conservación de suelos]]></kwd>
<kwd lng="es"><![CDATA[Degradación de suelos]]></kwd>
<kwd lng="es"><![CDATA[Erodabilidad]]></kwd>
<kwd lng="es"><![CDATA[USLE]]></kwd>
</kwd-group>
</article-meta>
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