<?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>1390-8596</journal-id>
<journal-title><![CDATA[LA GRANJA. Revista de Ciencias de la Vida ]]></journal-title>
<abbrev-journal-title><![CDATA[La Granja]]></abbrev-journal-title>
<issn>1390-8596</issn>
<publisher>
<publisher-name><![CDATA[Universidad Politécnica Salesiana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1390-85962022000200098</article-id>
<article-id pub-id-type="doi">10.17163/lgr.n36.2022.08</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efectos contrastivos de la evaluación de la contaminación ambiental en dos zonas del Distrito Metropolitano de Quito, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Contrasting Effects of Air Pollution Assessment in two Areas of the Quito Metropolitan District, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cornejo-Vásconez]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Espinosa]]></surname>
<given-names><![CDATA[Fabián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guasumba]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toulkeridis]]></surname>
<given-names><![CDATA[Theofilos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Católica del Ecuador  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pontificia Universidad Católica del Ecuador  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de las Fuerzas Armadas ESPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Pontificia Universidad Católica del Ecuador  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de las Fuerzas Armadas ESPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>98</fpage>
<lpage>112</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S1390-85962022000200098&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S1390-85962022000200098&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S1390-85962022000200098&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Uno de los principales factores de contaminación del aire dentro de las zonas urbanas es la quema de gasolina por parte de autos, camiones ligeros y motocicletas. La quema de gasolina libera gases contaminantes como el dióxido de nitrógeno, el dióxido de azufre, el monóxido de carbono y el benceno, entre otros. Entre ellos, el dióxido de nitrógeno (NOx) es el que destaca por la concienciación de la gente sobre dicha contaminación. En esta investigación se utilizó el Método de los Precios Hedónicos (MPH) para determinar la percepción de la gente sobre la calidad del aire como indicador y estimar el efecto de los gases en el mercado inmobiliario. Se seleccionaron dos zonas del Distrito Metropolitano de Quito para evaluar los efectos de la contaminación en los inmuebles. Una con mayor concentración de gases ubicada dentro del casco histórico de Quito, y la otra con mejor calidad de aire conocida como el sector Bellavista. Los resultados de los tres modelos diferentes indicaron que una reducción de 1 (µg/m3) de NOx aumentaría un promedio de 4,54% el valor del mercado inmobiliario, lo que representa un valor de USD 2.032.326,24 para las propiedades de la muestra. Una disminución de 5 (µg/m3) aumentaría en un 22,7% el valor de las propiedades.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract One of the main factors of air contamination within urban areas is burning gasoline by cars, light trucks and motorcycles. Gasoline burning liberates pollution gases such as Nitrogen dioxide, Sulfur dioxide, Carbon monoxide, benzene, besides others. Among these, Nitrogen dioxide (NOx) is the one that stands out for the people&#8217;s awareness of such contamination. We used the Hedonic Price Method (HPM) in order to determine people&#8217;s perception of air quality as a proxy and estimate the effect of gases on the housing market. We selected two areas of Quito Metropolitan District in order to evaluate contamination effects on properties. One with a higher concentration of gases located within the historic district of Quito. The other with better air quality called the Bellavista district. The results of three different models indicated that a reduction of 1 (µg/m3) of NOx would increase an average of 4.54% of the housing market value, which it represents 2,032,326.24 USD in value for sample properties. A decrease of 5 µg/m3 will increase in 22.7% of properties value.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gases de efecto invernadero]]></kwd>
<kwd lng="es"><![CDATA[precio hedónico]]></kwd>
<kwd lng="es"><![CDATA[valor de la vivienda]]></kwd>
<kwd lng="es"><![CDATA[contaminación del aire]]></kwd>
<kwd lng="es"><![CDATA[Quito]]></kwd>
<kwd lng="en"><![CDATA[Greenhouse gases]]></kwd>
<kwd lng="en"><![CDATA[hedonic price]]></kwd>
<kwd lng="en"><![CDATA[housing value]]></kwd>
<kwd lng="en"><![CDATA[air contamination]]></kwd>
<kwd lng="en"><![CDATA[Quito]]></kwd>
</kwd-group>
</article-meta>
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