<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792018000300239</article-id>
<article-id pub-id-type="doi">10.28940/terra.v36i3.399</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimación de la cobertura aérea de la vegetación herbácea usando sensores remotos]]></article-title>
<article-title xml:lang="en"><![CDATA[Estimation of herbaceous vegetation aerial cover estimation using remote sensing]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paz Pellat]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>36</volume>
<numero>3</numero>
<fpage>239</fpage>
<lpage>259</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792018000300239&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792018000300239&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792018000300239&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La estimación de variables biofísicas, particularmente la cobertura aérea foliar (fv), con el uso de sensores remotos permite su uso en diferentes campos de aplicación y facilita la parametrización de modelos. Con una perspectiva de modelos de transferencia de radiación, el desarrollo de índices de vegetación (IV) debe estar basado en consideraciones teóricas y evidencia experimental, además debe tener una relación lineal con la variable biofísica de interés. En este trabajo se revisan las consideraciones teóricas para el diseño de IV con un formato de estandarización de la geometría sol-sensor y el uso de reflectancias normalizadas para considerar el efecto de escala. A partir del uso de simulaciones de radiación se introduce el Índice de Vegetación de Proporciones Estandarizadas en relación al Limite Asociado a espacios Normalizados y sus Atrayentes (IV_PELANA) para establecer una relación lineal con fv. El índice desarrollado es validado con el uso de múltiples experimentos de vegetación herbácea, estableciéndose su robustez y estabilidad para ser usado en términos operativos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: To estimate biophysical variables, particularly foliage cover (fv), remote sensors can be used in different fields of application and facilitate model parameterization. From the perspective of radiation transfer models, the development of vegetation indexes (VI) should be based on theoretical considerations and experimental evidence, and there should be a linear relationship with the biophysical variable of interest. In this paper the theoretical considerations for the VI design are reviewed with a standardization format of the sol-sensor geometry and the use of normalized reflectances to consider the scale effect. From the use of radiation simulations, the Vegetation Index of Standardized Proportions in relation to the Limit Associated to Normalized spaces and their Attractors (VI_SPLANA) is introduced to establish a linear relationship with fv. The developed index is validated through multiple experiments on herbaceous vegetation, establishing its robustness and stability to be used in operational terms.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[patrones lineales]]></kwd>
<kwd lng="es"><![CDATA[reflectancias estandarizadas y normalizadas]]></kwd>
<kwd lng="es"><![CDATA[IV_PELANA]]></kwd>
<kwd lng="es"><![CDATA[simulaciones de radiación]]></kwd>
<kwd lng="en"><![CDATA[linear patterns]]></kwd>
<kwd lng="en"><![CDATA[normalized and standardized reflectances]]></kwd>
<kwd lng="en"><![CDATA[VI_SPLANA]]></kwd>
<kwd lng="en"><![CDATA[radiation simulations]]></kwd>
</kwd-group>
</article-meta>
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