<?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>0121-3709</journal-id>
<journal-title><![CDATA[ORINOQUIA]]></journal-title>
<abbrev-journal-title><![CDATA[Orinoquia]]></abbrev-journal-title>
<issn>0121-3709</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Investigaciones de la Orinoquia Colombiana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-37092018000200158</article-id>
<article-id pub-id-type="doi">10.22579/20112629.525</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelación de los stocks de carbono del suelo y las emisiones de dióxido de carbono (GEI) en sistemas productivos de la Altillanura Plana]]></article-title>
<article-title xml:lang="en"><![CDATA[Modeling soil carbon stocks and carbon dioxide emissions (GHG) in production systems of Plain Altillanura]]></article-title>
<article-title xml:lang="pt"><![CDATA[Modelagem dos estoques de carbono do solo e as emissões de dióxido de carbono (GEE) em sistemas de produção da Altillanura Plana]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva-Parra]]></surname>
<given-names><![CDATA[Amanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de los Llanos Facultad de Ciencias Agropecuarias y Recursos Naturales Grupo de Investigación en Sistemas Agrícolas y Forestales ISAF]]></institution>
<addr-line><![CDATA[Villavicencio ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>22</volume>
<numero>2</numero>
<fpage>158</fpage>
<lpage>171</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-37092018000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-37092018000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-37092018000200158&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los distintos manejos de los suelos afectan las existencias de C del suelo. El análisis multivariado de la modelación de los stocks de C del suelo (SOC0-T), las tasas de pérdidas (-&#916;C) y/o ganancias de C del suelo (&#916;C), las emisiones de gases de efecto invernadero (GEI) y remociones (-GEI) de CO2 atmosférico asociadas con algunas propiedades fisicoquímicas de los suelos en sistemas productivos de la Altillanura y otros de Piedemonte de la Orinoquia conformaron tres grupos bien definidos. El clúster I agrupó a pasturas mejoradas de Granada (S1) y sistemas agroforestales (SAFs) de café asociados con plátano y leguminosas de Villavicencio (S9), donde las ganancias de C (&#916;C) y absorciones de CO2 atmosférico (-GEI) fueron medias variando de &#8776; 0.11 a 2.37 t C ha-1 año-1 y de -1.60 a -8.70 t CO2eq ha-1 año-1; siendo que monocultivos en rotación también formaron parte de este grupo; el clúster II reunió a monocultivos de arroz de Villavicencio (S10) y de piña de Puerto López (S14) que presentaron las más altas pérdidas de C (-&#916;C) del suelo y emisiones de CO2 atmosférico (GEI) de &#8776; -2.08 a -2.35 t C ha-1 año-1 y de &#8776; 7.62 a 8.62 t CO2eq ha-1 año-1; el clúster III agrupo a sistemas agroforestales SAFs de caucho y leguminosas de cobertura (S13) y sistemas silvopastoriles (SSPs) de Acacia mangium y pasturas mejoradas (S12) de Puerto López con las más altas ganancias de C del suelo (&#916;C) y absorciones de CO2 atmosférico (-GEI) de &#8776; 0.373 a 2.64 t C ha-1 año-1 y de &#8776; -1.36 a -9.67 t CO2eq ha-1 año-1. Los sistemas agroforestales son una buena alternativa para el secuestro de C del suelo en la Altillanura Plana de Colombia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The different soil management affects soil C stocks. Multivariate analysis of the modeling of soil C stocks (SOC0-T), soil C losses rates (-&#916;C) and / or soil C gains (&#916;C), greenhouse emissions (GHG) and removals (-GHG) atmospheric of CO2 associated with some physicochemical properties of soils in productive systems of High plains and other of lower mountains of the Orinoco region formed three distinct groups. Cluster I grouped improved pastures of Granada (S1) and coffee agroforestry systems (AFS) associated with banana and legumes of Villavicencio (S9), where gains of C (&#916;C) and removal of atmospheric CO2 (-GEI) were averages ranging from &#8776; 0.11 to -2.37 t C ha-1 yr-1 and -1.60 to -8.70 t CO2eq ha-1 yr-1; monocultures in rotation also were part of this group; Cluster II grouped rice monoculture of Villavicencio (S10) and pineapple of Puerto Lopez (S14) who had the highest losses of C (-&#916;C) and soil atmospheric CO2 emissions (GHG) of &#8776; -2.08 to - 2.35 t C ha-1 yr-1 of &#8776; 7.62 to 8.62 t CO2eq ha-1 yr-1; Cluster III grouped to agroforestry system AFS of rubber and leguminous cover crops (S13) and silvopastoral systems (SSPs) of Acacia mangium and improved pastures of Puerto Lopez (S12) with the highest gains of soil C (&#916;C) and removals of atmospheric CO2 (-GEI) of &#8776; 0.373 to 2.64 t C ha-1 yr-1 and -1.36 to -9.67 &#8776; t CO2eq ha-1 yr-1. Agroforestry systems are a good alternative for soil C sequestration in Altillanura Plana of Colombia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A diferente gestão dos solos modifica os estoques do C orgânico do solo. A análise multivariada da modelagem do estoque de C orgânico (SOC0-T), as taxas de perdida (-&#916;C) e / o aumento de C no solo (&#916;C), as emissões de gases de efeito estufa (GEE) e remoções (-GEE) de CO2 atmosférico associado com algumas propriedades físico-químicas dos solos em sistemas produtivos da Altillanura e outras regiões de Piedemonte da região do Orinoco conformaram três grupos distintos. Cluster I agrupou pastagens melhoradas (S1) e sistemas agroflorestais (SAFs) de café associados com banana e leguminosas de Villavicencio (S9), onde o aumento de C (&#916;C) e remoção do CO2 atmosférico (-GEE) eram médias que variou entre &#8776; 0,11 até 2,37 t C ha-1 ano-1 e -1,60 até -8,70 t CO2eq ha-1 ano-1; as monoculturas em rotação também foram parte deste grupo; Cluster II agrupou a monocultura de arroz de Villavicencio (S10) e monocultura de abacaxi de Puerto Lopez (S14), que teve a maior perdida de C (-&#916;C) no solo e as emissões de CO2 na atmosfera (GEE) &#8776; -2,08 até - 2,35 t C ha-1 ano-1 e &#8776; 7,62 até 8,62 t CO2eq ha-1 ano-1; Cluster III agrupou os sistemas agroflorestais SAFs de borracha e culturas de cobertura de leguminosas (S13), e sistemas silvipastoris (SSPs) de Acacia mangium e pastagens melhoradas (S12) de Puerto Lopez com o maior acumulo do C do solo C (&#916;C) e remoções de CO2 atmosférico (-GEE) de &#8776; 0,373 até 2,64 t C ha-1 ano-1 e de &#8776; -1,36 até -9,67 t CO2eq ha-1 ano-1. Os sistemas agroflorestais são uma boa alternativa para o sequestro do C no solo na Altillanura Plana da Colômbia.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Agricultura sostenible]]></kwd>
<kwd lng="es"><![CDATA[cambio climático]]></kwd>
<kwd lng="es"><![CDATA[entrada de residuos]]></kwd>
<kwd lng="es"><![CDATA[tipo de labranza]]></kwd>
<kwd lng="es"><![CDATA[usos del suelo]]></kwd>
<kwd lng="en"><![CDATA[Climate change]]></kwd>
<kwd lng="en"><![CDATA[land use]]></kwd>
<kwd lng="en"><![CDATA[residues inputs]]></kwd>
<kwd lng="en"><![CDATA[sustainable agriculture]]></kwd>
<kwd lng="en"><![CDATA[tillage type]]></kwd>
<kwd lng="pt"><![CDATA[Agricultura sustentável]]></kwd>
<kwd lng="pt"><![CDATA[entradas de resíduos]]></kwd>
<kwd lng="pt"><![CDATA[mudanças climáticas]]></kwd>
<kwd lng="pt"><![CDATA[tipo do preparo do solo]]></kwd>
<kwd lng="pt"><![CDATA[uso do solo]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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