<?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>S2007-11322018000300131</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v9i47.155</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimadores de muestreo para inventario de plantaciones de Pinus chiapensis (Martínez) Andresen]]></article-title>
<article-title xml:lang="en"><![CDATA[Sampling estimators for the inventory of Pinus chiapensis (Martínez) Andresen plantations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fierros Mateo]]></surname>
<given-names><![CDATA[Reynol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos Posadas]]></surname>
<given-names><![CDATA[Héctor Manuel de los]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fierros González]]></surname>
<given-names><![CDATA[Aurelio Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Cobos]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Ángel]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<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[Quiñonez Barraza]]></surname>
<given-names><![CDATA[Gerónimo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo Posgrado de Ciencias Forestales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de El Salto  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,INIFAP Comef Cenid]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,INIFAP  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,INIFAP Campo Experimental Valle de Guadiana ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>47</numero>
<fpage>131</fpage>
<lpage>150</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322018000300131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322018000300131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322018000300131&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La evaluación de plantaciones forestales comerciales (PFC) requiere de herramientas cuantitativas precisas (estimadores de muestreo) para conocer las existencias maderables, generar información confiable para planificar acciones y tomar las mejores decisiones en el manejo sostenible de los recursos forestales. En este contexto, se planteó el objetivo de comparar cuatro estimadores para plantear una estrategia eficiente de muestreo que permita calcular las existencias maderables de Pinus chiapensis en una plantación forestal comercial (PFC), en el municipio Tlatlauquitepec, Puebla. Para cuantificar el inventario de las plantaciones de Pinus chiapensis se utilizó la información dasométrica (D y H) de 44 parcelas permanentes de muestreo, establecidas en 2014 en una superficie de 87 ha y remedidas en 2015. Se evaluaron dos estimadores clásicos basados en diseños: Muestreo Simple al Azar (MSA) y Muestreo Estratificado (ME), así como dos basados en modelos: Estimadores de Razón (ERaz) y Estimadores de Regresión (EReg), estos últimos emplean una media poblacional estimada bajo ME. Los resultados indican que los cuatro estimadores son estadísticamente diferentes y muestran que el EReg es más preciso para estimar las existencias en volumen al emplear como variable auxiliar el área basal. El EReg permitió actualizar el inventario de un total de 4 806 m3 para el primer año de medición, a 6 496 m3 en el segundo año. En el ERaz (V 2 /V 1 ) bajo ME se obtiene una Razón (R) del volumen dos (2015) entre el volumen uno (2014) que sugiere un incremento porcentual de 35 % del volumen para 2015.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The assessment of commercial forest plantations (PFC) requires accurate quantitative tools (sampling estimators) to know the timber inventory, to generate reliable information for planning actions and make the best decisions on sustainable forest management of forest resources. In this context the aim of this study was to compare four estimators to propose an efficient sampling strategy that allows calculation of timber stocks of Pinus chiapensis growing in a commercial forest plantation (PFC), in Tlatlauquitepec, Puebla. To quantify the inventory of Pinus chiapensis plantations, we used the mensuration information (D and H) of 44 permanent sampling plots, established in 2014 in an 87 ha-1 surface area and re-measured in 2015. Two classical estimators based on designs: Simple Random Sampling (MSA) and Stratified Sampling (ME), and two based on models: Reason Estimators (ERaz) and Regression Estimators (EReg), the latter employing a population mean that is estimated under ME. The results show that the four estimators are statistically different and that the EReg is the most accurate to estimate the stock in volume when using the basimetric area as an auxiliary variable. EReg allowed to update the inventory of a total of 4 806 m3 for the first year of measurement to 6 496 m3 in the second year. In ERaz (V 2 /V 1 ) under ME a Reason (R) of volume two (2015) is obtained between volume one (2014) which suggests a percentage increase of 35 % of the volume for 2015.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estimadores de muestreo]]></kwd>
<kwd lng="es"><![CDATA[inventario forestal]]></kwd>
<kwd lng="es"><![CDATA[muestreo simple al azar]]></kwd>
<kwd lng="es"><![CDATA[parcelas permanentes]]></kwd>
<kwd lng="es"><![CDATA[Pinus chiapensis (Martínez) Andresen]]></kwd>
<kwd lng="es"><![CDATA[sitios de muestreo]]></kwd>
<kwd lng="en"><![CDATA[Sampling estimators]]></kwd>
<kwd lng="en"><![CDATA[forest inventory]]></kwd>
<kwd lng="en"><![CDATA[simple random sampling]]></kwd>
<kwd lng="en"><![CDATA[permanent plots]]></kwd>
<kwd lng="en"><![CDATA[Pinus chiapensis (Martínez) Andresen]]></kwd>
<kwd lng="en"><![CDATA[sampling sites]]></kwd>
</kwd-group>
</article-meta>
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