<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792022000100119</article-id>
<article-id pub-id-type="doi">10.28940/terra.v40i0.1321</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Patrones de distribución a profundidad del carbono orgánico del suelo en diferentes usos del suelo y manejo]]></article-title>
<article-title xml:lang="en"><![CDATA[Soil organic carbon depth distribution patterns in different land uses and management]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acosta-Mireles]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paz-Pellat]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hidalgo-Moreno]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Etchevers-Barra]]></surname>
<given-names><![CDATA[Jorge Dionisio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,GRENASER  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Colegio de Postgraduados Laboratorio de Fertilidad de Suelos y Química Ambiental ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</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>40</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792022000100119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792022000100119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792022000100119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La distribución del carbono orgánico de los suelos (COS) a profundidad es importante para definir almacenes de carbono y analizar los impactos de diferentes mecanismos y procesos de desestabilización. La modelación de la distribución vertical del COS ha sido aproximada por enfoques empíricos o usando modelos de cinéticas de primer orden con multi-compartimentos. En este trabajo se introduce un modelo de cinética de orden n, que generaliza desarrollos previos de uso de un solo compartimento. El modelo es ajustado a perfiles de suelo del Proyecto de Manejo Sustentable de Laderas en la Sierra Norte de Oaxaca, México, en tres microcuencas de las regiones Mazateca, Cuicateca y Mixe. Los protocolos de muestreo, diseño experimental, sistemas y laboratorio son presentados. El modelo de cinética de orden n se ajustó bien a los datos experimentales (R2 &gt; 0.99), aunque se encontró alta variabilidad (horizontal y a profundidad), la cual fue discutida como una posible relación con la posición de los puntos de muestreo en campo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: The distribution of soil organic carbon (SOC) at depth is important to define carbon stocks and for analyzing the impacts of different destabilization mechanisms and processes. The modeling of the vertical distribution of the SOC has been approximated by empirical approaches or using first order kinetic models with multi-compartments. This paper introduces a kinetic model of n order, which generalizes previous developments of use of a single compartment. The model is adjusted to soil profiles of the Hillside Sustainable Management Project in the Sierra Norte of Oaxaca, Mexico, in three microbasins of the Mazateca, Cuicateca and Mixe regions. Sampling protocols, experimental design, systems and laboratory are presented. The kinetic model of n order was adjusted well to the experimental data (R2 &gt; 0.99), although high variability (horizontal and vertical) was found, which was discussed as a possible relationship with the position of the field sampling points.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cinética de orden n]]></kwd>
<kwd lng="es"><![CDATA[modelo mono-compartimento]]></kwd>
<kwd lng="es"><![CDATA[Oaxaca]]></kwd>
<kwd lng="es"><![CDATA[Proyecto de Manejo Sustentable de Laderas]]></kwd>
<kwd lng="es"><![CDATA[puntos de muestreo]]></kwd>
<kwd lng="es"><![CDATA[Sierra Norte]]></kwd>
<kwd lng="en"><![CDATA[n order kinetic]]></kwd>
<kwd lng="en"><![CDATA[mono-compartment model]]></kwd>
<kwd lng="en"><![CDATA[Oaxaca]]></kwd>
<kwd lng="en"><![CDATA[Hillside Sustainable Management Project]]></kwd>
<kwd lng="en"><![CDATA[sampling points]]></kwd>
<kwd lng="en"><![CDATA[Sierra Norte]]></kwd>
</kwd-group>
</article-meta>
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