<?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>S2007-11322020000200112</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v11i58.642</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelo para predecir biomasa foliar seca de Litsea parvifolia (Hemsl.) Mez.]]></article-title>
<article-title xml:lang="en"><![CDATA[Model for estimating Litsea parvifolia (Hemsl.) Mez. dry leaf biomass]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villavicencio-Gutiérrez]]></surname>
<given-names><![CDATA[Eulalia Edith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Morales]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez Gonzalez]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Saltillo ]]></institution>
<addr-line><![CDATA[Saltillo ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento Forestal ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>58</numero>
<fpage>112</fpage>
<lpage>133</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322020000200112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322020000200112&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322020000200112&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Litsea parvifolia es un arbusto, perenne de la familia Lauraceae, cuya biomasa foliar es su componente principal. Sus hojas se aprovechan y comercializan en el sureste de Saltillo y alrededores. En fresco, tiene uso culinario y medicinal; en seco, como condimento. Con el propósito de generar información básica para la regulación de su aprovechamiento, se planteó seleccionar un modelo alométrico para predecir la biomasa foliar seca y elaborar una tabla de producción para arbustos en pie. Se evaluaron algunas poblaciones naturales, en las que se registró la altura total (H) y diámetro promedio (Dp) de todos los individuos en pie y se determinó la biomasa foliar seca (Bfs). Se probaron nueve modelos alométricos mediante el procedimiento PROC MODEL en SAS 9.4, para elegir aquel con el mayor coeficiente de determinación ajustado (   R  2 a j .); el valor más bajo en la raíz cuadrada media del error ( R C M E), en el coeficiente de variación ( C V) y en la suma de cuadrados de los residuales (SCR); además de la significancia de sus parámetros ( P  &#8804;  0.05). El Dp y la H se correlacionaron con la Bfs. El modelo Schumacher-Hall no lineal es confiable estadísticamente (p &lt; 0.0001), registra los mejores estadísticos, con presencia de heteroscedasticidad, efecto corregido con regresión ponderada con estructura de varianza (Dp  2 H) -0.5 , una R  2  Aj . de 0.82, S  xy de 18.41 g y un CV de 44.93 %. El modelo puede usarse para predecir la producción de Bfs en sitios con características ecológicas similares al área de estudio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Litsea parvifolia is an ever-green shrub of the Lauraceae family whose foliar biomass is its main component. Its leaves are harvested and marketed in and around the southeastern region of Saltillo municipality, Coahuila State. Fresh, it has culinary and medicinal use; dry, it is used as condiment. In order to regulate its use and determining its stock, an allometric model was selected to estimate the dry foliar biomass and the elaboration of a production table of the standing shrubs was planned as well. Natural populations were evaluated, recording the total height (H, cm) and mean diameter (Dp, cm) of the shrub crown, considering all categories of height and cover of standing shrubs and dry leaf biomass (Bfs, g). Ten allometric models were evaluated using the PROC MODEL procedure in SAS, version 9.4. Dp and H are correlated with laurel Bfs. The Schumacher-Hall model in its non-linear form is statistically reliable (p &lt;0.0001) as it records the best statistics, with presence of heteroscedasticity, corrected effect with a weighted regression with variance structure (Dp  2 H) -0.5 , obtaining an R  2  aj . of 0.82, S  xy of 18.41 g and a CV of 44.93 %. The model can be used to estimate the production of Bfs in places with similar ecological characteristics to the study area.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Alometría]]></kwd>
<kwd lng="es"><![CDATA[biomasa]]></kwd>
<kwd lng="es"><![CDATA[hoja seca]]></kwd>
<kwd lng="es"><![CDATA[manejo forestal]]></kwd>
<kwd lng="es"><![CDATA[no maderable]]></kwd>
<kwd lng="es"><![CDATA[regresión ponderada]]></kwd>
<kwd lng="en"><![CDATA[Allometry]]></kwd>
<kwd lng="en"><![CDATA[biomass]]></kwd>
<kwd lng="en"><![CDATA[dry leaf]]></kwd>
<kwd lng="en"><![CDATA[forest management]]></kwd>
<kwd lng="en"><![CDATA[non-timber]]></kwd>
<kwd lng="en"><![CDATA[weighted regression]]></kwd>
</kwd-group>
</article-meta>
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