<?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>S2007-11322016000100052</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Clasificación y ordenación de bosques de pino piñonero del estado de Querétaro]]></article-title>
<article-title xml:lang="en"><![CDATA[Classification and ordination of pinyon pine forests of Querétaro State]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosas Chavoya]]></surname>
<given-names><![CDATA[Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Granados Sánchez]]></surname>
<given-names><![CDATA[Diódoro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Granados Victorino]]></surname>
<given-names><![CDATA[Ro Linx]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esparza Govea]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo División de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo Área de Biología Departamento de Preparatoria Agrícola]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Colegio de Postgraduados Posgrado en Hidrociencias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</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>7</volume>
<numero>33</numero>
<fpage>52</fpage>
<lpage>73</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322016000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322016000100052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322016000100052&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El desierto queretano, en especial el que está dentro de la Sierra Gorda, incluye una de las áreas con mayor abundancia de pinos piñoneros en México. El estudio descrito se llevó acabo en 14 localidades de bosques de estas coníferas con el objetivo de caracterizarlos estructural y florísticamente, así como establecer una relación entre la estructura y la composición de especies de las comunidades con su ambiente físico. Se realizaron muestreos estacionales de junio del 2013 a junio del 2014, y recorridos de 2 000 m por localidad, donde se recolectaron e identificaron herbáceas anuales y perennes, arbustos y árboles. Los resultados indican la existencia de tres taxa pertenecientes al grupo de los piñoneros: P. cembroides, P. cembroides var. bicolor y P. pinceana; mismos que junto con Juniperus flaccida forman cuatro diferentes asociaciones de dominancia y codominacia, cada una con distintos grados de similitud florística, los cuales fueron definidos por un análisis de agrupamiento. La ordenación mediante un análisis de correspondencias canónicas sugiere que las variables que rigen la composición de la vegetación y los grupos ecológicos son de origen multifactorial; de ellos, los más relevantes para su establecimiento son la materia orgánica, la pendiente y la altitud. P. pinceana es la única dentro de la NOM-059, de las tres registradas en el estado de Querétaro, y ha sido catalogada como en peligro de extinción.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The Queretanian desert, particularly that part within the Sierra Gorda, includes an area with the greatest abundance of pinyon pines in Mexico. The study here described was carried out in 14 locations of this kind of forests with the aim to make the structural and floristic characterization as well as to establish a relationship between the structure and the species composition with their physical environment. Seasonal samplings were performed from June 2013 to June 2014 and 2 000 m long walk rounds by location were made; thus annual and perennial herbs, shrubs and trees were collected and identified. Results show the existence of three taxa that belong to this group: P. cembroides, P. cembroides var. bicolor and P. pinceana; which, together with Juniperus flaccida make up four different associations of dominance and codominance, each one with different degrees of floristic similitude, which were defined by a cluster analysis. The ordination by a correspondence canonical analysis suggests that the variables that govern the floristic composition and the ecological groups have a multifactorial origin of variables where the most outstanding which affect their establishment were the organic matter, slope and altitude. Of the three taxa in record in Querétaro State, P. pinceana is the only one considered in the NOM-059 regulation and has been classified as endangered species.]]></p></abstract>
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<kwd lng="es"><![CDATA[composición florística]]></kwd>
<kwd lng="es"><![CDATA[comunidad vegetal]]></kwd>
<kwd lng="es"><![CDATA[estructura forestal]]></kwd>
<kwd lng="es"><![CDATA[Pinus cembroides Zucc]]></kwd>
<kwd lng="en"><![CDATA[Canonical Correspondence Analysis]]></kwd>
<kwd lng="en"><![CDATA[plant association]]></kwd>
<kwd lng="en"><![CDATA[plant composition]]></kwd>
<kwd lng="en"><![CDATA[plant community]]></kwd>
<kwd lng="en"><![CDATA[forest structure]]></kwd>
<kwd lng="en"><![CDATA[Pinus cembroides Zucc]]></kwd>
</kwd-group>
</article-meta>
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