<?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>S2007-11322018000100122</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v9i45.138</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del cambio de uso de suelo en el contenido del carbono orgánico y nitrógeno del suelo]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of the change of land use on the contents of soil organic carbon and nitrogen]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cantú Silva]]></surname>
<given-names><![CDATA[Israel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yáñez Díaz]]></surname>
<given-names><![CDATA[María Inés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>45</numero>
<fpage>122</fpage>
<lpage>151</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322018000100122&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322018000100122&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322018000100122&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los suelos son el mayor reservorio de carbono, contienen casi tres veces más que la biomasa aérea. Los cambios de uso de suelo representan la segunda fuente antrópica de emisiones a la atmósfera. Se evaluó el contenido de carbono y nitrógeno en cuatro sistemas de uso de suelo: matorral espinoso tamaulipeco, cultivo agrícola, pastizal y plantación de eucaliptos. Se recolectaron cuatro muestras de suelo por sitio, a dos profundidades (0-5 y 5-30 cm); se analizó el contenido de carbono orgánico del suelo (COS), nitrógeno total (Nt) y se estimó la relación C/N. Los resultados del contenido de COS y Nt para la profundidad 0-5 cm fueron de 1.4-0.16 % (agrícola), 2.4-0.27 % (plantación), 3.41-0.33 % (pastizal) y 4.1-0.43 % (matorral), respectivamente. Para la profundidad 5-30 cm, los valores disminuyeron. La relación C/N presentó registros de 8.7 a 10.4, en ambas profundidades; lo que indica una buena humificación de la materia orgánica. Las pérdidas de COS y Nt por los cambios de uso del suelo de matorral a otro sistema fluctuaron de 2.4 % hasta 66 %, el COS se redujo, principalmente, en la profundidad de suelo 0-5 cm; mientras que el Nt tuvo las mayores reducciones en la profundidad de 5-30 cm. Al sistema agrícola le correspondió una pérdida más alta de COS y Nt, en las dos profundidades. Los resultados evidencian que los cambios de uso de suelo ocasionan una disminución en la fertilidad, lo que se refleja en el sistema agrícola, donde los contenidos de C y Nt fueron más bajos, respecto a lo estimado en la vegetación de matorral.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Soils are the largest carbon reservoir, containing almost three times as much as aerial biomass. Changes in land use represent the second anthropogenic source of carbon into the atmosphere due to carbon emissions. Carbon and nitrogen content in four contrasting land-use systems were evaluated, Tamaulipan thornscrub, agricultural crop, grassland and eucalyptus plantation. Four soil samples at two depths were collected per site (0-5 and 5-30 cm) and the soil organic carbon content (COS), total nitrogen (Nt) were analyzed and the C/N ratio was estimated. The results for the COS and Nt content for the 0-5 cm depth were 1.4-0.16 % (agricultural), 2.4-0.27 % (plantation), 3.41-0.33 % (pasture) and 4.1-0.43 % (Thornscrub land), respectively. Overall the contents of COS and Nt at depth 5-30 cm. decreased. The C/N ratio showed values between 8.7 and 10.4 at both depths, indicating effective humification and mineralization of organic matter. COS and Nt losses due to changes in the use of Thornscrub land to another land use system fluctuated between 2.4 % to 66 %, the COS decreased mainly at soil depth 0-5 cm, while Nt value decreased most at soil depth of 5-30 cm. The agricultural system experienced the greatest loss of COS and Nt, at both depths. The results indicated that changes in land use caused a decrease in soil fertility, which was reflected in the agricultural system, where the values of C and Nt were lower than those found with the Thornscrub vegetation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carbono orgánico del suelo]]></kwd>
<kwd lng="es"><![CDATA[fertilidad]]></kwd>
<kwd lng="es"><![CDATA[Matorral Espinoso Tamaulipeco]]></kwd>
<kwd lng="es"><![CDATA[nitrógeno]]></kwd>
<kwd lng="es"><![CDATA[sistema de uso de suelo]]></kwd>
<kwd lng="es"><![CDATA[Vertisol]]></kwd>
<kwd lng="en"><![CDATA[Soil organic carbon]]></kwd>
<kwd lng="en"><![CDATA[fertility]]></kwd>
<kwd lng="en"><![CDATA[Tamaulipan thornscrub]]></kwd>
<kwd lng="en"><![CDATA[nitrogen]]></kwd>
<kwd lng="en"><![CDATA[land use system]]></kwd>
<kwd lng="en"><![CDATA[Vertisol]]></kwd>
</kwd-group>
</article-meta>
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