<?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>S2007-11322024000300028</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v15i83.1433</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estructura y caracterización de rodales de Pinus hartwegii Lindl. en el Parque Nacional Pico de Orizaba]]></article-title>
<article-title xml:lang="en"><![CDATA[Structure and characterization of Pinus hartwegii Lindl. stands in Pico de Orizaba National Park]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Colohua-Citláhua]]></surname>
<given-names><![CDATA[Bernabé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Guerrero]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Correa-Díaz]]></surname>
<given-names><![CDATA[Arian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Hernández]]></surname>
<given-names><![CDATA[J. Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Posgrado en Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>15</volume>
<numero>83</numero>
<fpage>28</fpage>
<lpage>54</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322024000300028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322024000300028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322024000300028&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El Pico de Orizaba es un área natural protegida en la que destacan bosques de Pinus hartwegii sometidos a presiones naturales y antrópicas. El objetivo del presente estudio fue comparar los parámetros dasométricos de ocho rodales con cuatro exposiciones (N, S, E y O) y dos altitudes (3 700 y 3 900 m). Se ubicaron áreas con cobertura representativa y se establecieron tres sitios de dimensiones fijas de 1 000 m2 por cada combinación de exposición-altitud. La obtención de información se complementó con imágenes de un vehículo aéreo no tripulado (VANT). Se obtuvo mayor densidad de arbolado (593 árboles ha-1) en la combinación E-3 700 y la mínima en la zona O-3 900 (113 árboles ha-1). Los extremos de área basal mínima (11.9 m2 ha-1) y máxima (35.2 m2 ha-1) correspondieron a las combinaciones S-3 900 y E-3 700, respectivamente. El área basal y volumen disminuyeron con la altitud. La estructura horizontal mostró mayor número de individuos en categorías diamétricas bajas (10-40 cm) y la estructura vertical en las de 25 a 30 m de altura. La prueba de Kruskal-Wallis evidenció diferencias significativas entre las ocho combinaciones para las variables diámetro (DN), altura total (AT) y volumen (VOL), cuya reducción más notable fue sobre la exposición sur al incrementar la altitud de 3 700 a 3 900 m, lo que indica que la combinación S-3 900 es menos favorable para el crecimiento del arbolado. Las combinaciones exposición-altitud con parámetros dasométricos superiores y más potencial de crecimiento fueron N-3 700, E-3 700, S-3 700 y O-3 900.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Pico de Orizaba is a natural protected area with Pinus hartwegii forests subjected to natural and anthropogenic pressures. The objective of this study was to compare the mensuation parameters of eight stands with four exposures (N, S, E, and W) at two different altitudes (3 700 and 3 900 m). Areas with representative coverage were located and three sites of fixed dimensions of 1 000 m2 were established for each exposure-altitude combination. The collected information was complemented with images from an unmanned aerial vehicle (UAV). The highest tree density (593 trees ha-1) was obtained in the E-3 700 combination, and the lowest, in the W-3 900 area (113 trees ha-1). The extremes of minimum (11.9 m2 ha-1) and maximum (35.2 m2 ha-1) basimetric area corresponded to combinations S-3 900 and E-3 700, respectively. The basimetric area and volume decreased with the altitude. The horizontal structure showed a greater number of individuals in low diameter categories (10-40 cm), and the vertical structure in the 25 to 30 m height categories. The Kruskal-Wallis test showed significant differences between the eight combinations for the diameter (DN), total height (TA) and volume (VOL) variables. The most notable reduction was on the southern exposure, as the altitude increased from 3 700 to 3 900 m, indicating that the S-3 900 combination is less favorable for tree growth. The exposure-elevation combinations with superior mensuration parameters and more growth potential were N-3 700, E-3 700, S-3 700, and W-3 900.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Distribución diamétrica]]></kwd>
<kwd lng="es"><![CDATA[estructura de rodales]]></kwd>
<kwd lng="es"><![CDATA[Parque Nacional Pico de Orizaba]]></kwd>
<kwd lng="es"><![CDATA[Pinus hartwegii Lindl.]]></kwd>
<kwd lng="es"><![CDATA[topografía]]></kwd>
<kwd lng="es"><![CDATA[VANT]]></kwd>
<kwd lng="en"><![CDATA[Diametric distribution]]></kwd>
<kwd lng="en"><![CDATA[stand structure]]></kwd>
<kwd lng="en"><![CDATA[Pico de Orizaba National Park]]></kwd>
<kwd lng="en"><![CDATA[Pinus hartwegii Lindl.]]></kwd>
<kwd lng="en"><![CDATA[topography]]></kwd>
<kwd lng="en"><![CDATA[UAV]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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