<?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>0120-2812</journal-id>
<journal-title><![CDATA[Acta Agronómica]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Agron.]]></abbrev-journal-title>
<issn>0120-2812</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-28122017000400531</article-id>
<article-id pub-id-type="doi">10.15446/acag.v66n4.57478</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Sustainability calculation approach of guadua ( Guadua angustifolia Kunth.) forests throughout the use of emergetic analysis]]></article-title>
<article-title xml:lang="es"><![CDATA[Aproximación al cálculo de la sostenibilidad de bosques de guadua ( Guadua angustifolia Kunth.) mediante el uso de análisis energético]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arango-Arango]]></surname>
<given-names><![CDATA[Ángela María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camargo-García]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castaño-Rojas]]></surname>
<given-names><![CDATA[Juan Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de Pereira Facultad de Ciencias Ambientales Grupo de Investigación en Gestión de Agroecosistemas Tropicales Andinos "GATA"]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Tecnológica de Pereira Facultad de Ciencias Ambientales Grupo de investigación en Ecología, Ingeniería y Sociedad - EIS]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>66</volume>
<numero>4</numero>
<fpage>531</fpage>
<lpage>537</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28122017000400531&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28122017000400531&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28122017000400531&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The sustainability of guadua forests under management was assessed throughout the emergy analysis approach. The system analyzed correspond to guadua forest whose major product are culms for commercial purposes. In order to calculate the sustainability, available information on purchased inputs, renewable and nonrenewable natural resources as well as external factors, which can affect the system such as labor or inputs (ie. fuel consumption), was used for calculate indexes which describe relationship among the employed natural resources. The results showed the guadua forest system under management does not depend on external inputs and its sustainability is above 90%. In fact, the recovery ability after harvesting shown by these guadua forests is associated with a proper management, which contributes to the ecosystem conservation of functions. Considering the current management conditions, the guadua forest system is sustainable although highly dependent on natural resources. Under these conditions, the system become vulnerable since the management should be focused on guaranteeing the current conditions and therefore, their conservation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La sostenibilidad de los bosques manejados de guadua se evaluó utilizando el enfoque emergético. El producto principal de este sistema son culmos que se cosechan para uso comercial. Para el cálculo de la sostenibilidad se utilizó la información disponible sobre insumos comprados, los recursos naturales renovables y no renovables utilizados en el proceso, así como de factores externos como mano de obra e insumos que pueden afectar al sistema. De esta manera, se calcularon índices que describen relaciones entre los recursos empleados. Los resultados mostraron que el bosque de guadua como sistema no presenta dependencia alta de uso de insumos externos y que su sostenibilidad está por encima del 90%, demostrando su capacidad de recuperación después de ser cosechado. De la misma manera, el buen manejo de estos bosques contribuye a la conservación de las funciones que cumplen como ecosistemas. El sistema, de acuerdo a las condiciones de manejo actual, es sostenible y depende altamente de los recursos naturales. Esta condición por lo tanto, puede hacerlo vulnerable, razón por la cual su manejo debe estar enfocado en garantizar las condiciones que permitan la conservación de los mismos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Emergetic]]></kwd>
<kwd lng="en"><![CDATA[farm]]></kwd>
<kwd lng="en"><![CDATA[guadua forest system]]></kwd>
<kwd lng="en"><![CDATA[management]]></kwd>
<kwd lng="en"><![CDATA[renewable natural resources]]></kwd>
<kwd lng="es"><![CDATA[Emergético]]></kwd>
<kwd lng="es"><![CDATA[finca]]></kwd>
<kwd lng="es"><![CDATA[manejo]]></kwd>
<kwd lng="es"><![CDATA[sistema bosque de guadua]]></kwd>
<kwd lng="es"><![CDATA[recursos naturales renovables]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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