<?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>1405-0471</journal-id>
<journal-title><![CDATA[Madera y bosques]]></journal-title>
<abbrev-journal-title><![CDATA[Madera bosques]]></abbrev-journal-title>
<issn>1405-0471</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-04712017000200133</article-id>
<article-id pub-id-type="doi">10.21829/myb.2017.232552</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Land use and land cover dynamics in the dehesa of Sierra Morena Biosphere Reserve (Sierra Norte de Sevilla Natural Park, Spain), 1956-2007]]></article-title>
<article-title xml:lang="es"><![CDATA[Dinámica del uso y cobertura del suelo en las dehesas de Sierra Morena (Parque Natural Sierra Norte de Sevilla, España), 1956-2007]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mancilla-Leytón]]></surname>
<given-names><![CDATA[Juan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Puerto-Marchena]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martín-Vicente]]></surname>
<given-names><![CDATA[Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Sevilla Departamento Biología Vegetal y Ecología ]]></institution>
<addr-line><![CDATA[Sevilla ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>23</volume>
<numero>2</numero>
<fpage>133</fpage>
<lpage>143</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-04712017000200133&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-04712017000200133&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-04712017000200133&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The dehesa, a representative savanna-like ecosystem type, has played and plays an important economic, ecological and social role, in addition to the valuable environmental services that it provides. The present study is focused on the analysis of the changes in the land use /cover of the dehesa in the Sierra Norte de Sevilla Natural Park (Sierra Morena Biosphere Reserve) during the last 50 years. In order to estimate the consequences that the change of land uses and, the activities that are carried out on it have on the dynamics of the dehesa, a diachronic analysis was performed for the period 1956-2007 using the digital geographic information available. The most important changes observed were related to: i) the increase of urban areas, water surface area, reforestation areas, eroded areas, mining areas and dumping sites; and ii) the decrease of cultivation areas, dehesa, scrubland and pastureland. The changing dynamics did not strictly respond only to phytosociological aspects, but it is necessary to explain the evolution of the landscape from the complex balance between biophysical and socioeconomic dynamics, where the current environmental changes also make it very difficult to ensure the persistence of this ecosystem. The present legislation promotes the development of a clear and up-to-date diagnosis of the problems that this ecosystem is facing. In this sense, the geographic information systems may be very useful at establishing the guidelines for the conservation and regeneration of the dehesas, and at spreading their environmental values.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La dehesa, además de los valiosos servicios ambientales que presta, ha jugado y juega un importante papel económico, ecológico y social. En el presente estudio se analizan los cambios en el uso y cubierta del suelo de las dehesas en el Parque Natural Sierra Norte de Sevilla (Sierra Morena) durante los últimos 50 años. Se realizó un análisis diacrónico para el período 1956-2007 utilizando la información geográfica digital disponible. Los cambios más importantes observados estuvieron relacionados con: i) el incremento de las áreas urbanas, la superficie del agua, áreas de reforestación, áreas erosionadas, áreas de minería y vertederos; y ii) la disminución de las áreas de cultivo, de dehesa, de monte bajo y pastos. Las dinámicas encontradas no respondieron exclusivamente a los aspectos fitosociológicos, pero fueron necesarias para explicar la evolución del paisaje desde el complejo equilibrio entre las dinámicas biofísicas y socioeconómicas, donde también los actuales cambios ambientales hacen que sea muy difícil asegurar la persistencia de este particular ecosistema. La actual legislación promueve el desarrollo de un diagnóstico claro de los problemas que este ecosistema enfrenta. En este sentido, los sistemas de información geográfica pueden ser muy útiles en el establecimiento de las directrices para la regeneración y conservación de las dehesas, y en el énfasis de sus valores ambientales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[GIS]]></kwd>
<kwd lng="en"><![CDATA[global change]]></kwd>
<kwd lng="en"><![CDATA[environmental sciences]]></kwd>
<kwd lng="en"><![CDATA[environmental values]]></kwd>
<kwd lng="en"><![CDATA[regeneration]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[SIG]]></kwd>
<kwd lng="es"><![CDATA[cambio global]]></kwd>
<kwd lng="es"><![CDATA[ciencia medioambiental]]></kwd>
<kwd lng="es"><![CDATA[valores ambientales]]></kwd>
<kwd lng="es"><![CDATA[regeneración]]></kwd>
</kwd-group>
</article-meta>
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