<?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>S2007-40182018000200219</article-id>
<article-id pub-id-type="doi">10.5154/r.rchscfa.2017.09.059</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Precision of remote sensors to estimate aerial biomass parameters: portable LIDAR and optical sensors]]></article-title>
<article-title xml:lang="es"><![CDATA[Precisión de los sensores remotos para la estimación de parámetros de biomasa aérea: LIDAR portátil y sensores ópticos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huerta-García]]></surname>
<given-names><![CDATA[Roberto E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Serrato]]></surname>
<given-names><![CDATA[Nelly L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yépez-Rincón]]></surname>
<given-names><![CDATA[Fabiola D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozano-García]]></surname>
<given-names><![CDATA[Diego F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico de Monterrey Laboratorio de Sistemas de Información Georreferenciada ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ingeniería Civil ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>24</volume>
<numero>2</numero>
<fpage>219</fpage>
<lpage>235</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40182018000200219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40182018000200219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40182018000200219&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Aerial biomass estimation using the traditional forestry method is laborious, expensive and time consuming. An alternative to solve this problem is the use of remote sensing.  Objective: To evaluate the precision of portable LIDAR technology and photogrammetry (photo-reconstruction) in the generation of point clouds to estimate aerial biomass.  Materials and methods:  A total of 26 Quercus L. trees were analyzed from an urban forest in the south of Monterrey, Mexico. Diameter at breast height (DBH), total height and crown diameter were obtained with six methods: 1) traditional forest, 2) portable LIDAR at ground level, 3) normal color photo-reconstruction (PR) at ground level, 4) infrared color PR at ground level, 5) PR of normal color aerial image and 6) PR of infrared aerial image. Aerial biomass was estimated and the precision of each method was evaluated taking as reference the traditional forest method.  Results and discussion:  Portable LIDAR offers more accurate information to estimate the aerial biomass (R2 = 0.945), followed by normal color PR at ground level (R2 = 0.824), when compared with that obtained by the traditional forest method. PR of normal color aerial images showed the poorest results (R2 = 0.653), due to the impossibility to measure the DBH. Data collection with sensors was faster (&gt;80 %) with respect to the TFM.  Conclusion:  Remote sensing techniques have the potential to obtain forest parameters in large-scale projects.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  La estimación de biomasa aérea mediante el método tradicional forestal es laboriosa, costosa y demanda tiempo. Una alternativa para resolver esta problemática es el uso de la teledetección.  Objetivo: Evaluar la precisión de la tecnología LIDAR portátil y la fotogrametría (fotorreconstrucción) en la generación de nubes de puntos para la estimación de biomasa aérea.  Materiales y métodos:  Se analizaron 26 árboles del género Quercus L. de un bosque urbano en el sur de Monterrey, México. El diámetro a la altura del pecho (DAP), altura total y diámetro de copa se obtuvieron con seis métodos: 1) tradicional forestal, 2) LIDAR portátil a nivel de suelo, 3) fotorreconstrucción (FR) de color normal a nivel de suelo, 4) FR de color infrarrojo a nivel de suelo, 5) FR de fotografía aérea de color normal y 6) FR de fotografía aérea de color infrarrojo. La biomasa aérea se calculó y la precisión de cada método se evaluó tomando como referencia el tradicional forestal.  Resultados y discusión:  LIDAR portátil ofrece información más precisa para estimar la biomasa aérea (R2 = 0.945), seguido por la FR de color normal a nivel de suelo (R2 = 0.824), cuando se comparan con la obtenida por el método tradicional forestal. La FR de fotografía aérea de color normal mostró los resultados más pobres (R2 = 0.653), debido a la imposibilidad de medir el DAP. La toma de datos con los sensores fue más rápida (&gt;80 %) con respecto al MTF.  Conclusión:  Las técnicas de teledetección tienen potencial para la obtención de parámetros forestales en proyectos de gran escala.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[aerial biomass]]></kwd>
<kwd lng="en"><![CDATA[Quercus]]></kwd>
<kwd lng="en"><![CDATA[photo-reconstruction]]></kwd>
<kwd lng="en"><![CDATA[unmanned aerial vehicle]]></kwd>
<kwd lng="en"><![CDATA[remote sensing]]></kwd>
<kwd lng="es"><![CDATA[biomasa aérea]]></kwd>
<kwd lng="es"><![CDATA[Quercus]]></kwd>
<kwd lng="es"><![CDATA[fotorreconstrucción]]></kwd>
<kwd lng="es"><![CDATA[vehículo aéreo no tripulado]]></kwd>
<kwd lng="es"><![CDATA[teledetección]]></kwd>
</kwd-group>
</article-meta>
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<person-group person-group-type="author">
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<source><![CDATA[Revista Mexicana de Ciencias Forestales]]></source>
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