<?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>0370-3908</journal-id>
<journal-title><![CDATA[Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. acad. colomb. cienc. exact. fis. nat.]]></abbrev-journal-title>
<issn>0370-3908</issn>
<publisher>
<publisher-name><![CDATA[Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0370-39082022000200514</article-id>
<article-id pub-id-type="doi">10.18257/raccefyn.1615</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contenido de nutrientes, acidez y textura del suelo en áreas degradadas por la minería en el Chocó biogeográfico]]></article-title>
<article-title xml:lang="en"><![CDATA[Nutrient content, acidity, and soil texture in areas degraded by mining in the biogeographic Chocó]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quinto-Mosquera]]></surname>
<given-names><![CDATA[Harley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala-Vivas]]></surname>
<given-names><![CDATA[Gentil]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[Harry]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica del Chocó "Diego Luis Córdoba"  ]]></institution>
<addr-line><![CDATA[Quibdó ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Tecnológica del Chocó Diego Luis Córdoba  ]]></institution>
<addr-line><![CDATA[Quibdó ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>46</volume>
<numero>179</numero>
<fpage>514</fpage>
<lpage>528</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0370-39082022000200514&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0370-39082022000200514&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0370-39082022000200514&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La minería es una de las actividades económicas que más destruyen ecosistemas en el Chocó biogeográfico, por lo que se requiere conocer los efectos que esta tiene en las condiciones fisicoquímicas del suelo con miras a su restauración. En ese contexto el objetivo del presente estudio fue evaluar los cambios en las condiciones edáficas de áreas degradadas por la minería a cielo abierto con diferente edad sucesional en la región. Para ello se establecieron cinco parcelas permanentes de 625 y 2.500 m2 en áreas con 15 y 30 años de recuperación, respectivamente. Posteriormente, se tomaron muestras compuestas de suelos a 20 cm de profundidad y se determinaron sus contenidos de nutrientes, pH y textura. Se observó que los suelos eran ácidos (pH=4,73), con altos porcentajes de arena, materia orgánica (6,62 %), nitrógeno (N) total (0,34 %), fósforo (P) disponible (28,21 ppm), potasio (K) (0,38 meq/100g) y aluminio (Al) (2,15 meq/100 g), pero con bajas cantidades de calcio (Ca) (2,28 meq/100 g) y magnesio (Mg) (1,37 meq/100 g). La disponibilidad de P y K fue alta en ambas edades sucesionales, en tanto que la materia orgánica, el N total, el Ca, el Mg, la capacidad de intercambio catiónico efectiva (CICE), el Al, y el porcentaje de arena incrementaron con la sucesión, aunque el pH y la arcilla, disminuyeron. En síntesis, se evidenció un incremento en la disponibilidad de arena y nutrientes, pero también un aumento en la acidez y la toxicidad del Al con la sucesión. Asimismo, se constató que la recuperación de las condiciones fisicoquímicas del suelo en minas está condicionada por el efecto de la materia orgánica y la vegetación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Mining is one of the economic activities that most destroy ecosystems in the biogeographic Chocó. Therefore, it is necessary to know the effects of mining on the physicochemical conditions of the soil with a view to its restoration. In this context, in the present study, we evaluated the changes in the edaphic conditions of areas degraded by mining with different successional ages in the region. For this, five permanent plots of 625 and 2,500 m2 were established in the areas with 15 and 30 years of recovery, respectively. Subsequently, composite soil samples were taken at a depth of 20 cm to determine their nutrient contents, pH, and texture. We found that the soils were acidic (pH = 4.73), with a high percentage of sand, organic matter (OM) (6.62%), total N (0.34%), available P (28.21 ppm ), K (0.38 meq/100 g), and Al (2.15 meq/100 g) but with low amounts of Ca (2.28 meq/100g) and Mg (1.37 meq/100 g). Furthermore, the availabilities of P and K were high in both successional ages whereas the OM, total N, Ca, Mg, effective cation exchange capacity (ECEC), Al, and the percentage of sand increased with the succession while the pH and the clay decreased. In summary, an increase in the availability of sand and nutrients was evidenced but also an increase in acidity and Al toxicity with the succession. Likewise, we confirmed that the recovery of the physicochemical conditions of the soil in mines is conditioned by the effect of organic matter and vegetation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fertilidad edáfica]]></kwd>
<kwd lng="es"><![CDATA[Limitación de nutrientes]]></kwd>
<kwd lng="es"><![CDATA[Minería]]></kwd>
<kwd lng="es"><![CDATA[Porcentaje de arena]]></kwd>
<kwd lng="es"><![CDATA[Restauración]]></kwd>
<kwd lng="es"><![CDATA[Suelos tropicales]]></kwd>
<kwd lng="en"><![CDATA[Edaphic fertility]]></kwd>
<kwd lng="en"><![CDATA[Nutrient limitation]]></kwd>
<kwd lng="en"><![CDATA[Mining]]></kwd>
<kwd lng="en"><![CDATA[Percentage of sand]]></kwd>
<kwd lng="en"><![CDATA[Restoration]]></kwd>
<kwd lng="en"><![CDATA[Tropical soils]]></kwd>
</kwd-group>
</article-meta>
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