<?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>2007-4018</journal-id>
<journal-title><![CDATA[Revista Chapingo serie ciencias forestales y del ambiente]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Chapingo ser. cienc. for. ambient]]></abbrev-journal-title>
<issn>2007-4018</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Chapingo, Coordinación de Revistas Institucionales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40182021000300383</article-id>
<article-id pub-id-type="doi">10.5154/r.rchscfa.2020.08.050</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Sinergia de datos espectrales Landsat, climáticos y LiDAR para el mapeo de biomasa aérea en selvas medianas de la península de Yucatán, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Reyes]]></surname>
<given-names><![CDATA[Alma D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Lazalde]]></surname>
<given-names><![CDATA[José R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ángeles-Pérez]]></surname>
<given-names><![CDATA[Gregorio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos-Posadas]]></surname>
<given-names><![CDATA[Héctor M. de los]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Salado]]></surname>
<given-names><![CDATA[Carlos A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peduzzi]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Rutgers University  ]]></institution>
<addr-line><![CDATA[Piscataway NJ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí  ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Woods Hole Research Center  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<fpage>383</fpage>
<lpage>400</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40182021000300383&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40182021000300383&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40182021000300383&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Tropical forests represent complex and dynamic ecosystems that cover extensive areas, hence the importance of determining biomass content and representing spatial variability.  Objective:  Estimating and mapping aboveground biomass and its associated uncertainty for medium-stature semi-evergreen (SMSP) and semi-deciduous (SMSC) tropical forests of the Yucatan Peninsula.  Materials and methods:  Aboveground biomass was estimated as a function of explanatory variables taken from Landsat images and climatic variables, using the random Forest algorithm. Aboveground biomass was mapped from previous biomass estimates for stripes of the territory with the presence of LiDAR (Light Detection And Ranging) and field data. Uncertainty at the pixel level was estimated as the coefficient of variation.  Results and discussion:  A combination of climatic and spectral variables showed acceptable capacity to estimate biomass in the medium-stature semi-evergreen and semi-deciduous tropical forest with an explained variance of 50 % and RMSE (root mean squared error) of 34.2 Mg·ha-1 and 26.2 Mg·ha-1, respectively, prevailing climate variables. SMSP biomass ranged from 4.0 to 185.7 Mg·ha-1 and SMSC ranged from 11.7 to 117 Mg·ha-1. The lowest values of uncertainty were recorded for the medium-stature semi-evergreen tropical forest, being higher in areas with lower amounts of aboveground biomass.  Conclusion:  Aboveground biomass was estimated and mapped by the combined use of auxiliary variables with an acceptable accuracy, against uncertainty of predictions, which represents an opportunity for future improvement.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  Los bosques tropicales constituyen ecosistemas complejos y dinámicos que cubren áreas extensas, de ahí la importancia de determinar su contenido de biomasa y representar su variabilidad espacial.  Objetivo:  Estimar y mapear la biomasa aérea y su incertidumbre asociada en selvas medianas subperennifolia (SMSP) y subcaducifolia (SMSC) de la península de Yucatán.  Materiales y métodos:  La biomasa aérea se estimó en función de variables explicativas obtenidas de imágenes Landsat y variables climáticas, mediante el algoritmo random Forest. La biomasa aérea se mapeó a partir de estimaciones previas de biomasa para franjas del territorio con presencia de datos LiDAR (Light Detection And Ranging) y datos de campo. La incertidumbre a nivel de pixel se estimó como el coeficiente de variación.  Resultados y discusión:  Una combinación de variables climáticas y espectrales mostraron capacidad aceptable para estimar la biomasa en la selva mediana subperennifolia y mediana subcaducifolia con una varianza explicada de 50 % y RMSE (raíz del error cuadrático medio) de 34.2 Mg·ha-1 y 26.2 Mg·ha-1, respectivamente, prevalenciendo las variables climáticas. La biomasa de la SMSP varió entre 4.0 y 185.7 Mg·ha-1 y la de la SMSC osciló entre 11.7 y 117 Mg·ha-1. Los valores más bajos de incertidumbre se registraron en la selva mediana subperennifolia, siendo mayores en zonas con cantidades menores de biomasa aérea.  Conclusión:  La biomasa aérea se estimó y mapeó mediante el uso combinado de las variables auxiliares con una precisión aceptable, contrario a la incertidumbre de las predicciones, lo que representa una oportunidad de mejora futura.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[tropical forest]]></kwd>
<kwd lng="en"><![CDATA[satellite images]]></kwd>
<kwd lng="en"><![CDATA[vegetation indices]]></kwd>
<kwd lng="en"><![CDATA[random Forest, uncertainty]]></kwd>
<kwd lng="es"><![CDATA[bosque tropical]]></kwd>
<kwd lng="es"><![CDATA[imágenes satelitales]]></kwd>
<kwd lng="es"><![CDATA[índices de vegetación]]></kwd>
<kwd lng="es"><![CDATA[random Forest, incertidumbre]]></kwd>
</kwd-group>
</article-meta>
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