<?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>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222016000300409</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diagnóstico y análisis de los factores que influyen en la vulnerabilidad de las fuentes de abastecimiento de agua potable a la Ciudad de México, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escolero]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kralisch]]></surname>
<given-names><![CDATA[Stefanie]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[Sandra E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perevochtchikova]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología Departamento de Geología Regional]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Karlsruhe Institute of Technology Department of Applied Geosciences ]]></institution>
<addr-line><![CDATA[Karlsruhe ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología Departamento de Geología Regional]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,El Colegio de México Centro de estudios ambientales ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>68</volume>
<numero>3</numero>
<fpage>409</fpage>
<lpage>427</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222016000300409&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222016000300409&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222016000300409&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El aumento de la densidad de población y la dinámica de la expansión urbana, con una marcada tendencia al crecimiento de las zonas urbanas y disminución de la población rural, hacen a las megaciudades focos de vulnerabilidad y de alta complejidad en la tarea de prestar los servicios urbanos básicos. En el caso de la Ciudad de México, la creciente demanda de agua ha impactado de manera negativa y creciente en el balance de las cuencas y acuíferos locales y vecinos que sirven de fuentes de abastecimiento a la ciudad, generando daños económicos y ambientales que ya se muestran dramáticos. Este trabajo se enfoca en realizar un diagnóstico de las fuentes de abastecimiento de agua potable que abastecen a la mega ciudad de México y analizar los factores que inciden en su vulnerabilidad; para ello se analizan tanto factores que están directamente relacionados con la infraestructura hidráulica, los aspectos jurídico-administrativos y sociales, como otros que son de relevante importancia para la sostenibilidad de las fuentes. Se determinó que los factores que más influyen son los relacionados con la disponibilidad presente y futura del agua, los conflictos sociales y políticos, los hundimientos del terreno por extracción intensiva de agua subterránea, la transferencia intersectorial del agua, y el deterioro ambiental de las áreas de captación de agua superficial y de recarga de los acuíferos. Se estableció que la alta vulnerabilidad por la degradación ambiental que presentan las fuentes de abastecimiento de origen superficial obliga a reevaluar los proyectos de importación de agua y que la protección de las partes altas de las cuencas debe ser considerada como uno de los temas prioritarios para la protección ambiental y civil, el cuidado de las zonas de recarga y la conservación del clima local.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The increase in population density and dynamics of urban expansion, with a sharp upward trend in urban areas and declining rural population, make megacities vulnerable with a high degree of complexity in the task of providing basic urban services. In the case of Mexico City, the increase in the demand for water has negatively and increasingly impacted the balance of watersheds and aquifers that serve as local and neighboring sources of water supply, causing dramatic economic and environmental damage. This work focuses on the examination of the factors that influence the vulnerability of drinking water sources in Mexico City; we analyzed factors that are directly related to hydraulic infrastructure, legal-administrative and social aspects, as well as other issues of considerable importance for the sustainability of sources. It was determined that the most important factors are related to the present and future availability of water, social and political conflicts, land subsidence as a result of intensive groundwater extraction, intersectoral transfer of water, and environmental degradation in areas of surface water collection and groundwater recharge. It was established that high vulnerability of surface water supply sources due to environmental degradation brings pressure to reassess water importation projects and to protect the upper parts of the basins, which should be considered as priority issues for environmental and civil protection, care of recharge areas and conservation of the local climate.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[vulnerabilidad]]></kwd>
<kwd lng="es"><![CDATA[abastecimiento del agua]]></kwd>
<kwd lng="es"><![CDATA[gestión del agua]]></kwd>
<kwd lng="es"><![CDATA[infraestructura para el agua]]></kwd>
<kwd lng="es"><![CDATA[degradación ambiental]]></kwd>
<kwd lng="en"><![CDATA[vulnerability]]></kwd>
<kwd lng="en"><![CDATA[water supply]]></kwd>
<kwd lng="en"><![CDATA[water management]]></kwd>
<kwd lng="en"><![CDATA[water infrastructure]]></kwd>
<kwd lng="en"><![CDATA[environmental degradation]]></kwd>
</kwd-group>
</article-meta>
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