<?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>0120-5609</journal-id>
<journal-title><![CDATA[Ingeniería e Investigación]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Investig.]]></abbrev-journal-title>
<issn>0120-5609</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad Nacional de Colombia.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-56092023000200002</article-id>
<article-id pub-id-type="doi">10.15446/ing.investig.98945</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Modeling Biometrie Attributes from Tree Height Using Unmanned Aerial Vehicles (UAV) in Natural Forest Stands]]></article-title>
<article-title xml:lang="es"><![CDATA[Modelación de atributos biométricos a partir de la altura del árbol usando vehículos aéreos no tripulados (VANT) en rodales de bosques naturales]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiñonez-Barrazal]]></surname>
<given-names><![CDATA[Gerónimo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pompa-García]]></surname>
<given-names><![CDATA[Marín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vivar-Vivar]]></surname>
<given-names><![CDATA[Eduardo D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallardo-Salazar]]></surname>
<given-names><![CDATA[José L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Francisco J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Flores]]></surname>
<given-names><![CDATA[Felipa de J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Moreno]]></surname>
<given-names><![CDATA[Raúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bretado-Velázquez]]></surname>
<given-names><![CDATA[Javier L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Cepeda]]></surname>
<given-names><![CDATA[Ricardo D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Díaz]]></surname>
<given-names><![CDATA[José C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Juárez  ]]></institution>
<addr-line><![CDATA[ Estado de Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Juárez  ]]></institution>
<addr-line><![CDATA[ Estado de Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Tecnológico de El Salto  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Politécnica de Durango  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A10">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>43</volume>
<numero>2</numero>
<fpage>1</fpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-56092023000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-56092023000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-56092023000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This study estimated biometric attributes of individual trees from the automated measurement of tree height (THUV) by using images from unmanned aerial vehicles (UAVs). An experiment was carried out in a natural forest stand in the north of Mexico by using a DJI P4 multispectral equipment and regression analysis. The results show that total tree height (TH) is successfully estimated from UAV images, as the automated estimation of total height (THUV) reaches a R2 = 0,95 and a RMSE = 0,36 m. Consequently, THUV was statistically reliable to generate allometric equations (R2 &gt; 0,57) regarding the canopy height model (CH), diameter at breast height (DBH), basal diameter (BD), above-ground biomass (AGB), volume (V), and carbon contents (C). It is concluded that the estimation of total height with UAVs is a viable option to improve efficiency in forest inventories. However, increased efforts towards the configuration of modern technologies and statistical algorithms are needed; future research challenges remain, particularly in the densest forests areas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Este estudio estimó los atributos biométricos de árboles individuales a partir de la altura total estimada automáticamente mediante el uso de imágenes de vehículos aéreos no tripulados (VANT). Se llevó a cabo un experimento en un rodal de bosque natural en el norte de México utilizando un equipo multiespectral DJI P4 y análisis de regresión. Los resultados muestran que la altura total del árbol (TH) se estima con éxito a partir de imágenes de VANT, ya que la estimación automática de la altura total (THUV) alcanza un R2 = 0,95 y un RMSE = 0,36 m. En consecuencia, el THUV fue estadísticamente confiable para generar ecuaciones alométricas (R2 &gt; 0,57) con respecto al modelo de altura del dosel (CH), el diámetro a la altura del pecho (DAP), el diámetro basal (BD), la biomasa superficial (AGB), el volumen (V) y el contenido de carbono (C). Lo que se concluye es que la estimación de altura total con VANT es una opción viable para mejorar la eficiencia en los inventarios forestales. Sin embargo, se requieren más esfuerzos orientados a la configuración de tecnologías modernas y algoritmos estadísticos; persisten los desafíos de la investigación futura, particularmente en las áreas boscosas más densas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[allometric relationships]]></kwd>
<kwd lng="en"><![CDATA[individual tree variables]]></kwd>
<kwd lng="en"><![CDATA[unmanned aerial vehicle]]></kwd>
<kwd lng="en"><![CDATA[DJI Phantom 4 Multispectral]]></kwd>
<kwd lng="es"><![CDATA[relaciones alométricas]]></kwd>
<kwd lng="es"><![CDATA[variables de árboles individuales]]></kwd>
<kwd lng="es"><![CDATA[vehículos aéreos no tripulados]]></kwd>
<kwd lng="es"><![CDATA[DJI Phantom 4 Multiespectral]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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