<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952016000100119</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comparación de estimadores para volumen maderable en selva mediana del sureste de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison of wood volume estimators in medium height tropical forests of Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velasco-Bautista]]></surname>
<given-names><![CDATA[Efraín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos-Posadas]]></surname>
<given-names><![CDATA[Héctor de los]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Maldonado]]></surname>
<given-names><![CDATA[Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rendón-Sánchez]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo División de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[Chapingo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<volume>50</volume>
<numero>1</numero>
<fpage>119</fpage>
<lpage>132</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952016000100119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952016000100119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952016000100119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En México, el proyecto Inventario Nacional Forestal y de Suelos (INFyS) utiliza para el análisis estadístico de los datos dasométricos estimadores de razón cuya aplicación es fácil. Sin embargo, en circunstancias diversas podría ser imposible obtener datos que cumplan por completo con sus supuestos teóricos. En este estudio se compararon los resultados del estimador de razón del INFyS con estimadores alternativos. Con datos del 2010 provenientes de la malla de muestreo obtenida en selva mediana subperennifolia y subcaducifolia en Quintana Roo y Campeche, México, se compararon estadísticamente los estimadores: razón de medias, medias de razones e Inventario Forestal y Análisis (FIA-USDA). El sesgo relativo del estimador de razón (sesgo respecto al error estándar) en todos los casos fue menor a 10 %; por tanto se consideró insignificante. En las condiciones estudiadas, los resultados indican que los tres estimadores no son estadísticamente diferentes. Sin embargo, el estimador medias de razón presenta la ventaja de proporcionar estimaciones por hectárea de manera directa. Además, su planteamiento teórico permite analizarlo desde una perspectiva del estimador Horvitz-Thompson.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In Mexico, the project National Forest and Soil Inventory (Inventario Nacional Forestal y de Suelos-NFyS) uses ratio estimators that are easily applicable for statistical analysis of dasometric data. However, under diverse circumstances, it may be impossible to obtain data that fully comply with their theoretical assumptions. In this study, the results of the INFyS ratio estimator are compared with results using alternative estimators. With 2010 data from the sampling grid obtained in the medium height sub-evergreen and subdeciduous forests of Quintana Roo and Campeche, Mexico, the ratio of means estimator, mean of ratios estimator and the Forest Inventory and Analysis (FIA-USDA) were compared statistically. The relative bias of the ratio estimator (bias, relative to the standard error) in all cases was below 10 % and, therefore, considered insignificant. Under the conditions of this study, the results indicate that the three estimators are not statistically different. However, the mean of ratios estimator has the advantage of directly providing estimations per hectare. Moreover, its theoretical approach permits its analysis from a perspective of the Horvitz-Thompson estimator.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Razón de medias]]></kwd>
<kwd lng="es"><![CDATA[media de razones]]></kwd>
<kwd lng="es"><![CDATA[bootstrap]]></kwd>
<kwd lng="es"><![CDATA[zonas de inclusión espacialmente disjuntas]]></kwd>
<kwd lng="en"><![CDATA[Ratio of means]]></kwd>
<kwd lng="en"><![CDATA[mean of ratios]]></kwd>
<kwd lng="en"><![CDATA[bootstrap]]></kwd>
<kwd lng="en"><![CDATA[spatially disjointed inclusion zones]]></kwd>
</kwd-group>
</article-meta>
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