<?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>0871-018X</journal-id>
<journal-title><![CDATA[Revista de Ciências Agrárias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. de Ciências Agrárias]]></abbrev-journal-title>
<issn>0871-018X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade de Ciências Agrárias de Portugal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0871-018X2022000300861</article-id>
<article-id pub-id-type="doi">10.19084/rca.28644</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Validação da RUSLE em solos com uso de produção pecuária ao ar livre]]></article-title>
<article-title xml:lang="en"><![CDATA[RUSLE validation in soils with use in outdoor livestock production]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roque]]></surname>
<given-names><![CDATA[Natália]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Horta]]></surname>
<given-names><![CDATA[Carmo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duarte]]></surname>
<given-names><![CDATA[António Canatário]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A4"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Polytechnic Institute of Castelo Branco School of Agriculture ]]></institution>
<addr-line><![CDATA[Castelo Branco ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Polytechnic Institute of Castelo Branco CERNAS-IPCB Research Centre for Natural Resources, Environment and Society ]]></institution>
<addr-line><![CDATA[Castelo Branco ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Polytechnique Institute of Castelo Branco Qrural ]]></institution>
<addr-line><![CDATA[Castelo Branco ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Beira Interior GEOBIOTEC Research Centre GeoBioSciences, GeoTechnologies and GeoEngineering ]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>45</volume>
<numero>4</numero>
<fpage>861</fpage>
<lpage>870</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2022000300861&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2022000300861&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2022000300861&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Os sistemas de produção de suínos ao ar livre são considerados sistemas de produção mais amigos do ambiente e de maior bem-estar animal, relativamente aos sistemas de produção intensiva em ciclo completo confinado. No entanto, o comportamento dos suínos que continuamente fuçam o solo, bem como as características do clima Mediterrâneo, precipitação concentrada no Inverno e a topografia do terreno são factores que influenciam o impacto destes sistemas na erosão hídrica do solo. Este trabalho visou avaliar a adequação da Equação Universal Revista de Perda de Solo (RUSLE) na previsão das perdas de solo, aplicada a uma área com produção de suínos ao ar livre, por comparação com a perda de solo observada após 17 anos de ensaio. A aplicação da RUSLE evidenciou que o risco de erosão do solo variava de muito a extremamente severo em 96,2% da área, originando uma perda solo média de 502,4 t/ha.ano. A aplicação do modelo RUSLE conduziu ao cálculo de uma perda efectiva de solo de 609,7 t/ha.ano, o que se pode considerar uma boa adesão aos valores observados. Os resultados observados evidenciam ainda que em 3,4% da área houve sedimentação, não estando o modelo RUSLE habilitado a simular esta componente do processo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Outdoor pig production is considered systems more environmentally friendly and with greater animal welfare, compared to intensive indoor production systems. The Mediterranean region offers good weather conditions for this type of production. However, the behavior of swine that continuously forages the soil, as well as the characteristics of the Mediterranean climate, with the precipitation concentrated in winter as well as the topography of the area are factors that influence the soil erosion in these systems. This work aimed to evaluate the adequacy of the Revised Universal Soil Loss Equation (RUSLE) applied to an area with outdoor pig production, compared to the observed soil loss after 17 years of testing. The application of RUSLE showed that the risk of soil erosion varied from very to extremely severe in 96% of the area, resulting in a soil loss of 502.4 t/ha.year. The RUSLE model agreed with field data which indicated an effective soil loss of 609.7 t/ha.year. Field data also showed that in 3.4% of the area there was sedimentation, a feature that is not provided by RUSLE.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[equação RUSLE]]></kwd>
<kwd lng="pt"><![CDATA[erosão do solo]]></kwd>
<kwd lng="pt"><![CDATA[sistema de pecuária intensivo]]></kwd>
<kwd lng="en"><![CDATA[RUSLE equation]]></kwd>
<kwd lng="en"><![CDATA[soil erosion]]></kwd>
<kwd lng="en"><![CDATA[intensive livestock system]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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