<?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>S0187-57792017000100019</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Arsénico edáfico y su distribución en el distrito de riego 017: uso de métodos de interpolación]]></article-title>
<article-title xml:lang="en"><![CDATA[Edaphic arsenic and its distribution in irrigation district 017: using interpolation methods]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Garrido]]></surname>
<given-names><![CDATA[Norma E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Segura Castruita]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco Vidal]]></surname>
<given-names><![CDATA[Jorge A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fortis Hernández]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Preciado Rangel]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olague Ramírez]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yescas Coronado]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Torreón  ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Torreón  ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>19</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792017000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792017000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792017000100019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los constituyentes del suelo (arcillas, carbonatos, materia orgánica y óxidos e hidróxidos), intervienen en la movilidad del arsénico (As) y determinan su variación espacial; por lo cual, su cartografía puede contribuir al entendimiento de la presencia de este metaloide en el suelo. Los objetivos de esta investigación fueron determinar la concentración de As en los suelos del Distrito de Riego 017 (DR017) de México y establecer su distribución espacial, utilizando dos métodos de interpolación. Cuatro etapas fueron realizadas; la primera consistió en trabajo de gabinete y campo, en la que 33 sitios de muestreo fueron localizados en un polígono del DR017, posteriormente en cada sitio, muestras simples de suelo (0-30 cm de profundidad) fueron colectadas. La segunda y tercera se llevaron a cabo en laboratorio, en las cuales, a cada muestra se determinó la concentración de As disponible, contenidos de arcilla, carbonatos de calcio y fósforo disponible y su regresión. La cuarta etapa tuvo dos partes, la elaboración de dos mapas con dos métodos de interpolación (Interpolador Ponderación Inversa de la Distancia, IDW en sus siglas en inglés y Kriging ordinario, KO), así como la verificación de la precisión de cada mapa. Los resultados mostraron que, la distribución del As en el DR017 no es uniforme y está asociada con el contenido de arcilla y CaCO3. De tal manera que, las concentraciones de As fluctuaron de 0.07 a 1.89 mg kg-1, donde las mayores concentraciones de este metaloide (1.39-1.89 mg kg&#8209;1) se relacionaron positivamente (R2 = 0.9058) con altos contenidos de arcilla (39.44 a 43.44%). El mapa de distribución espacial de As obtenido con KO, tuvo la mayor precisión (75.7%), en el cual se muestra que la concentración aumenta en un sentido sur-norte, donde el área de mayor concentración está en la parte norte del distrito.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: Soil constituents (clays, carbonates, organic matter and oxides and hydroxides), involved in the mobility of arsenic (As), determine its spatial variation; thus, the mapping can contribute to the understanding of the presence of this metalloid on the soil. The objectives of this research were to determine the concentration of As in soils of Irrigation District 017 (DR017) of Mexico and establish its spatial distribution using two interpolation methods. Four stages were performed; the first consisted of desk work and field, in which 33 sampling sites were located in a polygon of DR017, then at each site, simple soil samples (0-30 cm depth) were collected. The second and third were carried out in laboratory, in which, in each sample the concentration of As available, clay content, carbonates of calcium and phosphorus available and their regression were determined. The fourth stage had two parts, the development of two maps with two interpolation methods (Interpolator Weighting Inverse Distance, IDW its acronym in English and ordinary Kriging, OK) and verification of the accuracy of each map. The results showed that the distribution of As in the DR017 is not uniform and is associated with CaCO3 and clay content. So that, As concentrations ranged from 0.07 to 1.89 mg kg&#8209;1, where the highest concentrations of this metalloid (1.39-1.89 mg kg-1) were positively correlated (R2= 0.9058) with high content of clay (39.44 to 43.44%). The map of spatial distribution of As obtained by KO, had the highest accuracy (75.7%), which shows that the concentration increases in a north-south direction, where the area of greatest concentration is in the northern part of the district.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[arsenatos]]></kwd>
<kwd lng="es"><![CDATA[kriging]]></kwd>
<kwd lng="es"><![CDATA[IDW]]></kwd>
<kwd lng="es"><![CDATA[geoestadístico]]></kwd>
<kwd lng="en"><![CDATA[arsenates]]></kwd>
<kwd lng="en"><![CDATA[soil]]></kwd>
<kwd lng="en"><![CDATA[Kriging]]></kwd>
<kwd lng="en"><![CDATA[IDW]]></kwd>
<kwd lng="en"><![CDATA[geostatistical]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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