<?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>2310-3469</journal-id>
<journal-title><![CDATA[Revista Cubana de Ciencias Forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cubana ciencias forestales]]></abbrev-journal-title>
<issn>2310-3469</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Pinar del Río Hermanos Saíz Montes de Oca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2310-34692021000300454</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Acumulación de hojarasca y liberación de nutrientes al suelo en rodales de Pinus tropicalis Morelet]]></article-title>
<article-title xml:lang="pt"><![CDATA[Leaf litter accumulation and release of nutrients to the soil in Pinus tropicalis Morelet stands]]></article-title>
<article-title xml:lang="en"><![CDATA[Acumulação de lixo e libertação de nutrientes para o solo em povoamentos de Pinus tropicalis Morelet]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda Pérez]]></surname>
<given-names><![CDATA[Darien]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ravelo Pimentel]]></surname>
<given-names><![CDATA[Katiuska]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vigil García]]></surname>
<given-names><![CDATA[Pedro Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz López]]></surname>
<given-names><![CDATA[Maryory Solana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de pinar del Río "Hermanos Saíz Montes de Oca"  ]]></institution>
<addr-line><![CDATA[Pinar del Río ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>454</fpage>
<lpage>469</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2310-34692021000300454&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2310-34692021000300454&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2310-34692021000300454&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La investigación se realizó en la Unidad Silvícola Sumidero, perteneciente a la Empresa Agroforestal Minas, como el objetivo de evaluar el aporte de la hojarasca al suelo en rodales de Pinus tropicalis Morelet. La colecta de hojarasca se ejecutó en dos sitios: rodal 1 con calidad de sitio I, rodal 4 con calidad II; para se colocaron trampas-colectoras rectangulares (1X0.5 m) por rodal, en plantaciones de P. tropicalis, con edades entre 15 y 24 años. Se obtuvieron muestras de suelo con y sin hojarasca, en las cuales se terminaron los contenidos de nutrientes (fósforo, potasio, magnesio, calcio) y materia orgánica. Los resultados arrojaron diferencias significativas entre suelos con y sin hojarasca, más acentuadas en el fósforo y la materia orgánica, con incrementos superiores a 4,9 % y 3,9 % como consecuencia de la acumulación de hojarasca; mientras que, el mayor aporte de nutrientes y materia orgánica se produce en la superficie del suelo y disminuye, apreciablemente en los suelos extraídos de las calicatas hechas en los rodales, manteniendo las diferencias entre estas en los contenidos de fósforo y materia orgánica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO A investigação foi realizada na Unidade Silvicultural Sumidero, pertencente à Empresa Agroflorestal Minas, com o objectivo de avaliar a contribuição do lixo foliar para o solo em povoamentos de Pinus tropicalis Morelet. A recolha de lixo foliar foi realizada em dois locais: o stand 1 com qualidade de local I, o stand 4 com qualidade de local II; foram colocados coletores de armadilhas retangulares (1X0,5 m) em cada stand, em plantações de P. tropicalis, com idades compreendidas entre os 15 e 24 anos. Foram obtidas amostras de solo com e sem folhagens, nas quais foram determinados os teores de nutrientes (fósforo, potássio, magnésio, cálcio) e matéria orgânica. Os resultados mostraram diferenças significativas entre os solos com e sem ninhada, mais acentuadas no fósforo e na matéria orgânica, com aumentos superiores a 4,9% e 3,9% como consequência da acumulação de ninhada; enquanto que, a maior contribuição de nutrientes e matéria orgânica ocorre à superfície do solo e diminui, sensivelmente, nos solos extraídos das calicatas feitas nos povoamentos, mantendo as diferenças entre estes nos teores de fósforo e de matéria orgânica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The research was carried out in the Sumidero Silvicultural Unit, belonging to Empresa Agroforestal Minas, with the objective of evaluating the contribution of leaf litter to the soil in stands of Pinus tropicalis Morelet. The collection of leaf litter was carried out in two sites: stand 1 with site quality I, stand 4 with site quality II; rectangular traps-collectors (1X0.5 m) were placed in each stand, in plantations of P. tropicalis, with ages between 15 and 24 years. Soil samples were obtained with and without leaf litter, in which the contents of nutrients (phosphorus, potassium, magnesium, calcium) and organic matter were determined. The results showed significant differences between soils with and without leaf litter, more accentuated in phosphorus and organic matter, with increases higher than 4.9 % and 3.9 % as a consequence of the accumulation of leaf litter; whereas, the highest contribution of nutrients and organic matter is produced in the surface of the soil and decreases, appreciably in the soils extracted from the soil pits made in the stands, maintaining the differences between these in the contents of phosphorus and organic matter.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biomasa]]></kwd>
<kwd lng="es"><![CDATA[Materia orgánica]]></kwd>
<kwd lng="es"><![CDATA[Nutrientes.]]></kwd>
<kwd lng="pt"><![CDATA[Biomassa]]></kwd>
<kwd lng="pt"><![CDATA[Matéria orgânica]]></kwd>
<kwd lng="pt"><![CDATA[Nutrientes.]]></kwd>
<kwd lng="en"><![CDATA[Biomass]]></kwd>
<kwd lng="en"><![CDATA[Organic material]]></kwd>
<kwd lng="en"><![CDATA[nutrients.]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[V.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual de técnicas analíticas para análisis de suelo, foliar, abonos orgánicos y fertilizantes químicos]]></source>
<year>2010</year>
<publisher-name><![CDATA[Ediciones INCA]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
