<?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>1405-0471</journal-id>
<journal-title><![CDATA[Madera y bosques]]></journal-title>
<abbrev-journal-title><![CDATA[Madera bosques]]></abbrev-journal-title>
<issn>1405-0471</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-04712016000200015</article-id>
<article-id pub-id-type="doi">10.21829/myb.2016.2221321</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Condición de copa, indicador de salud en árboles urbanos del Bosque San Juan de Aragón, Ciudad de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Crown condition, a health indicator in urban trees of the San Juan de Aragon Park, Mexico City]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saavedra-Romero]]></surname>
<given-names><![CDATA[Luz de Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvarado-Rosales]]></surname>
<given-names><![CDATA[Dionicio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Patricia]]></surname>
<given-names><![CDATA[Hernández-de la Rosa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Trinidad]]></surname>
<given-names><![CDATA[Tomás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Aguilera]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villa-Castillo]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo Postgrado en Fitosanidad-Fitopatología]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo Postgrado en Ciencias Forestales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Comisión Nacional Forestal Sede Guadalajara ]]></institution>
<addr-line><![CDATA[Zapopan Jal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>22</volume>
<numero>2</numero>
<fpage>15</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-04712016000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-04712016000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-04712016000200015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las áreas verdes urbanas aportan diversos servicios a la sociedad y al ambiente. El Bosque San Juan de Aragón, es una de las pocas áreas verdes al noreste de la Ciudad de México y la condición actual de su arbolado en materia de salud no se conoce con precisión. En el presente estudio se implementó y adaptó el protocolo del indicador condición de copa en 28 parcelas circulares de 0.1 ha, establecidas aleatoriamente en el bosque mencionado. A todos los árboles dentro de cada parcela, se les midió el diámetro normal (DN) y altura total (At), se determinó su clasificación taxonómica, condición de copa y densidad de plantación. Para condición de copa, seis variables fueron medidas: proporción de copa viva (Pcv), densidad de copa (Dnc), transparencia de copa (Trc), muerte regresiva (Mrg), posición de copa (Pco) y exposición a la luz (Exl). Las primeras cuatro se midieron en clases de 5% y las dos restantes a través de una escala ordinal. Se evaluaron 760 árboles, agrupados en 10 familias, 11 géneros y 12 especies. Los valores promedio para las variables de copa fueron, 56.37% Pcv, 44.38% Dnc, 4.04% Mrg y 38.4% Trc. Solo la Pcv alcanzó los estándares establecidos de salud arbórea encontrados en otros estudios, mientras que las Dnc fueron bajas y los valores de TrC y Mrg altos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Green urban areas provide several benefits to society and to the environment. San Juan de Aragon Park, located in the northeast of Mexico City, is one of the few green areas in that urban zone but the health of its trees is not known. In this survey, the crown condition indicator protocol was adapted and applied in 28 circular plots (0.1 ha) established randomly in this park. Normal diameter, total height, species identity, crown condition and tree density were evaluated for all of the trees within these plots. Six crown variables were measured: live crown ratio (Lcr), crown density (Cdn), crown transparency (Ctr), crown dieback (Cdie), crown position (Cpo) and light exposure (Lex). The first four variables were measured in 5% classes, and the latter two by using an ordinal scale. A total of 760 trees, grouped into 10 families, 11 genera and 12 species, were evaluated. The average values for the crown variables were 56.37% for Lcr, 44.38% for Cdn, 4.04% for Cdie and 38.4% for Ctr. Only Lcr reached the standards established in other studies, while Cdn was lower and Ctr and Cdie were both higher.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[arbolado urbano]]></kwd>
<kwd lng="es"><![CDATA[muerte regresiva]]></kwd>
<kwd lng="es"><![CDATA[proporción de copa]]></kwd>
<kwd lng="es"><![CDATA[transparencia]]></kwd>
<kwd lng="en"><![CDATA[green urban areas]]></kwd>
<kwd lng="en"><![CDATA[crown dieback]]></kwd>
<kwd lng="en"><![CDATA[live crown ratio]]></kwd>
<kwd lng="en"><![CDATA[crown transparency]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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