<?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>2215-3896</journal-id>
<journal-title><![CDATA[Revista de Ciencias Ambientales]]></journal-title>
<abbrev-journal-title><![CDATA[Ciencias Ambientales]]></abbrev-journal-title>
<issn>2215-3896</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-38962021000100052</article-id>
<article-id pub-id-type="doi">10.15359/rca.55-1.3</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carbono acumulado en raíces de especies vegetales en sistemas silvopastoriles en el Norte de Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Carbon accumulated in roots of plant species in silvopastoral systems in northern Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras-Santo]]></surname>
<given-names><![CDATA[Jose Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Atencia]]></surname>
<given-names><![CDATA[Judith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Falla-Guzman]]></surname>
<given-names><![CDATA[Cindy Katherine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>55</volume>
<numero>1</numero>
<fpage>52</fpage>
<lpage>69</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-38962021000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-38962021000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-38962021000100052&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  (Introducción):  Los sistemas silvopastoriles (SSP) son alternativas sostenibles en el manejo de suelos dedicados a la actividad ganadera, que contribuyen a la recuperación de suelos degradados. (Objetivo): Conocer el potencial de captura de carbono (C) en biomasa de raíces finas por especie y su capacidad de exploración en el suelo dentro de dos SSP (A1 - Megathyrsus maximum cv Mombasa asociada con las especies arbustivas Leucaena leucocephala y Crescentia cujete; A2 - combinación de A1 + especies arbóreas Guazuma ulmifolia, Cassia grandis y Albizia saman) y pradera sin árboles (A0 - M. maximum cv Mombasa), en el valle medio del río Sinú.  (Metodología):  Se empleó un diseño de bloques completos al azar con 3 tratamientos y 3 repeticiones, sobre los cuales se determinó biomasa de raíces finas (BRF, &#8804; 5 mm) con cilindro de volumen conocido y densidad de longitud de raíz (DLR) mediante escáner de superficie plana, igualmente se determinaron propiedades fisicoquímicas de suelo.  (Resultados):  La L. leucocephala mostró valores altos de C acumulado en la biomasa de raíces (441.5 kg C ha-1) respecto a las otras especies evaluadas. En contraste, el C acumulado en raíces de la gramínea se vio afectado por la complejidad de los SSP, reduciéndose el 59 % (A1) y 34 % (A2), respecto A0. La mayor DLR se registró en las especies C. cujete y L. leucocephala (249.7±199.5 y 239.3±135.02 cm cm-2, respectivamente).  (Conclusiones):  Los SSP acumulan mayor C en biomasa de raíces y mejoran las propiedades fisicoquímicas del suelo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  (Introduction):  Silvopastoral systems (SPSs) are sustainable alternatives to manage soils dedicated to livestock production, contributing to the recovery of degraded soils. (Objective): Know the potential of carbon capture (C-capture) in fine root biomass per species and their exploration capacity in the soil between two SPSs (A1 - Megathyrsus maximum cv Mombasa associated with the shrub species, Leucaena leucocephala and Crescentia cujete; A2 - combination of A1 + tree species, Guazuma ulmifolia, Cassia grandis, and Albizia saman) and meadows without trees (A0 - M. maximum cv Mombasa), in the middle valley of the Sinú River.  (Methodology):  A randomized complete block design was used with three treatments and three repetitions, in which fine root biomass (FRB, &#8804; 5 mm) was determined with a cylinder of known volume and root length density (RLD) using a flatbed scanner; physicochemical properties of soil were also determined.  (Results): L. leucocephala showed high values of C accumulation in root biomass (441.5 kg C ha-1) compared to the other species evaluated. In contrast, C accumulated in grass roots was affected by the SPS complexity, reducing 59 % (A1) and 34 % (A2), with respect to A0. The highest RLD was recorded in the C. cujete and L. leucocephala species (249.7 ± 199.5 and 239.3 ± 135.02 cm cm-2, respectively).  (Conclusions):  SPSs accumulate higher C in root biomass and improve the soil&#8217;s physicochemical properties.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Densidad de longitud]]></kwd>
<kwd lng="es"><![CDATA[gramínea]]></kwd>
<kwd lng="es"><![CDATA[propiedades fisicoquímicas]]></kwd>
<kwd lng="es"><![CDATA[raíces finas]]></kwd>
<kwd lng="es"><![CDATA[suelo]]></kwd>
<kwd lng="en"><![CDATA[Fine roots]]></kwd>
<kwd lng="en"><![CDATA[grass]]></kwd>
<kwd lng="en"><![CDATA[length density]]></kwd>
<kwd lng="en"><![CDATA[physicochemical properties]]></kwd>
<kwd lng="en"><![CDATA[soil]]></kwd>
</kwd-group>
</article-meta>
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