<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322018000200004</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v9i46.134</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Relación carbono-nitrógeno en suelos de sistemas silvopastoriles del Chaco paraguayo]]></article-title>
<article-title xml:lang="en"><![CDATA[Carbon/nitrogen ratio in soils of silvopastoral systems in the Paraguayan Chaco]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gamarra Lezcano]]></surname>
<given-names><![CDATA[Cynthia Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Lezcano]]></surname>
<given-names><![CDATA[Maura Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vera de Ortíz]]></surname>
<given-names><![CDATA[Mirtha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galeano]]></surname>
<given-names><![CDATA[María del Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera Cardús]]></surname>
<given-names><![CDATA[Antero José Nicolás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>46</numero>
<fpage>4</fpage>
<lpage>26</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322018000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322018000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322018000200004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El sistema silvopastoril permite que la producción ganadera sea más sustentable, porque la interacción entre sus componentes aporta beneficios al suelo, a la pastura, al ganado y a los árboles; además de, un aumento en la productividad y la diversificación de la producción. Para conocer las características de dichos sistemas, se llevó a cabo un estudio en propiedades privadas ubicadas en el Chaco Paraguayo, donde se instalaron ocho parcelas permanentes de 1 ha cada una, en las que se midieron todos los individuos de Prosopis spp. (algarrobo), se identificaron y extrajeron muestras de pastura de subparcelas situadas bajo la copa de los árboles y fuera de ella para comparar su biomasa; también se obtuvieron muestras de suelo en las mismas condiciones, a dos profundidades: de 0 a 10 cm y de 10 a 30 cm, con el propósito de comparar el contenido de materia orgánica y la Relación Carbono/Nitrógeno (C/N). El componente arbóreo estaba integrado por Prosopis alba (algarrobo blanco) y Prosopis nigra (algarrobo negro) asociados a pastura cultivada compuesta en forma mayoritaria por Panicum maximum cv Gatton panic (Gatton panic), Digitaria decumbens (pasto pangola) y Cenchrus ciliaris (pasto buffel). La presencia de los algarrobos influyó sobre la biomasa de la pastura, pues sus registros fueron mayores bajo las copas que fuera de estas. La materia orgánica en el suelo no presentó diferencias significativas entre condición de sol y de sombra, pero sí al variar la profundidad; en cambio, la Relación C/N no varió en ninguna de las condiciones.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The silvopastoral system renders the livestock production more sustainable because the interaction between its components brings benefits to the soil, to the grassland, livestock and trees; furthermore, it enhances the productivity and the diversification of production. To know the characteristics of these systems, a study was carried out in private properties located in the Paraguayan Chaco, where eight permanent plots of 1 ha each were established in which all Prosopis spp. (carob) individuals were measured and identified, and samples were drawn from grasslands of subplots located beneath the canopy of the trees and beyond to compare their biomass; soil samples were also obtained under the same conditions, at two different depths -0 to 10 cm and 10 to 30 cm- with the purpose of comparing the content of organic matter and carbon/nitrogen ratio (C/N). The arboreal component consisted of Prosopis alba (white carob tree) and Prosopis nigra (black carob tree), in association with cultivated grassland composed mostly by Panicum maximum cv Gatton panic (Gatton Panic), Digitaria decumbens (Pangola grass), and Cenchrus ciliaris (Buffel grass). The presence of the carob trees influenced the biomass of the grassland, which was more abundant beneath the tree crowns than outside of them. The organic matter in the soil exhibited no significant differences between the conditions of sun and shade, but it differed between depths; in contrast, the C/N ratio did not change under any of the conditions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carbono/nitrógeno]]></kwd>
<kwd lng="es"><![CDATA[carbono orgánico]]></kwd>
<kwd lng="es"><![CDATA[Chaco Paraguayo]]></kwd>
<kwd lng="es"><![CDATA[materia orgánica]]></kwd>
<kwd lng="es"><![CDATA[sistema silvopastoril]]></kwd>
<kwd lng="es"><![CDATA[suelo]]></kwd>
<kwd lng="en"><![CDATA[Carbon/Nitrogen ratio]]></kwd>
<kwd lng="en"><![CDATA[organic carbon]]></kwd>
<kwd lng="en"><![CDATA[Paraguayan Chaco]]></kwd>
<kwd lng="en"><![CDATA[organic matter]]></kwd>
<kwd lng="en"><![CDATA[silvopastoral system]]></kwd>
<kwd lng="en"><![CDATA[soil]]></kwd>
</kwd-group>
</article-meta>
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