<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952006000200269</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Demanda y distribución del agua en la Comarca Lagunera, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Water demand and distribution in the Comarca Lagunera, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Salazar]]></surname>
<given-names><![CDATA[José A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Soria]]></surname>
<given-names><![CDATA[Eugenio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fortis-Hernández]]></surname>
<given-names><![CDATA[Manuel]]></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>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico Agropecuario  ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2006</year>
</pub-date>
<volume>40</volume>
<numero>2</numero>
<fpage>269</fpage>
<lpage>276</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952006000200269&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952006000200269&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952006000200269&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Para determinar el aumento en el precio del agua en los sectores agrícola, pecuario, residencial e industrial de la Comarca Lagunera que permita reducir la extracción de agua subterránea, se validó un modelo de equilibrio espacial e intertemporal que consideró funciones de demanda y ofertas fijas. Los resultados indican que en el periodo 2001-2003 la demanda anual promedio de agua fue de 872.5, 539.2, 67.8, 44.2 y 28.9 millones de metros cúbicos (hm3) en los sectores agrícola de riego por bombeo, agrícola de riego por gravedad, residencial, pecuario e industrial. De esta demanda 65.3% (1013.4 hm3) fue abastecida con agua subterránea. Una disminución de 10% en las extracciones de agua subterránea podría lograrse aumentando 98.6 y 21.5% los precios en los sectores agrícola de riego por bombeo e industrial, respecto a los precios promedio de 2001 a 2003, porque tal aumento disminuiría la demanda en 99.8 y 1.4 hm3 en esos sectores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract To determine the price increase of water in the agricultural, livestock, residential and industrial sectors of the Comarca Lagunera that will make it possible to reduce the extraction of underground water, a spatial and intertemporal equilibrium model was validated, which considered demand functions and fixed supplies. Results indicate that in the period 2001-2003, the average annual water demand was 872.5, 539.2, 62.8, 44.2 and 28.9 million cubic meters (hm3) in the pumped and surface irrigation agriculture, residential, livestock and industrial sectors. Of this demand 65.3% (1013.4 hm3) was supplied with underground water. A reduction of 10% in the underground water extractions could be achieved by increasing the price 98.6 and 21.5% in the pumped irrigation agriculture and industrial sectors, with respect to the average prices of 2001 to 2003, given that such an increase would reduce the demand by 99.8 and 1.4 hm3 in these sectors.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Agricultura]]></kwd>
<kwd lng="es"><![CDATA[ganadería]]></kwd>
<kwd lng="es"><![CDATA[industria]]></kwd>
<kwd lng="es"><![CDATA[modelo de equilibrio espacial]]></kwd>
<kwd lng="es"><![CDATA[sector residencial]]></kwd>
<kwd lng="en"><![CDATA[Agriculture]]></kwd>
<kwd lng="en"><![CDATA[livestock]]></kwd>
<kwd lng="en"><![CDATA[industry]]></kwd>
<kwd lng="en"><![CDATA[spatial equilibrium model]]></kwd>
<kwd lng="en"><![CDATA[residential sector]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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