<?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>0377-9424</journal-id>
<journal-title><![CDATA[Agronomía Costarricense]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Costarricense]]></abbrev-journal-title>
<issn>0377-9424</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica. Colegio de Ingenieros y Agrónomos. Ministerio de Agricultura y Ganadería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0377-94242021000100143</article-id>
<article-id pub-id-type="doi">10.15517/rac.v45i1.45733</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Simulación de la contaminación agrícola difusa en la cuenca baja del Río Mayo]]></article-title>
<article-title xml:lang="en"><![CDATA[Simulation of agricultural diffuse pollution in the lower basin of the Río Mayo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Rodríguez]]></surname>
<given-names><![CDATA[Isaac Shamir]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salazar-Solano]]></surname>
<given-names><![CDATA[Vidal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Dena]]></surname>
<given-names><![CDATA[Jesús Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Sonora  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo A. C.,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo A. C.,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>45</volume>
<numero>1</numero>
<fpage>143</fpage>
<lpage>151</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242021000100143&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242021000100143&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242021000100143&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. El deterioro de los recursos hídricos asociados a la actividad antropogénica, ha sido tema central en las cumbres mundiales celebradas en el último cuarto del siglo XX. En los acuerdos ha trascendido la relevancia de evaluar el impacto de la intrusión de contaminantes difusos en cada territorio. Objetivo. Validar la eficiencia del modelo SWAT en la Cuenca Baja del Río Mayo en el Estado de Sonora, México. Materiales y métodos. Se utilizó el modelo SWAT para realizar la simulación hidrológica, para conocer los aportes de contaminación difusa dentro de la Cuenca Baja del Río Mayo en el Estado de Sonora, México. Los datos analizados fueron de precipitación, temperatura, cobertura vegetal, orografía, tipos y usos del suelo. Resultados. Se obtuvo un inventario de agentes de contaminación difusa arrastrada hacia los drenes exorreicos de la cuenca, así como la medición anual y la ubicación georreferenciada, donde destacó el aporte de nitratos y fosfatos como remanentes de la actividad agrícola desarrollada en la cuenca. La información se validó con el coeficiente de eficiencia de Nash-Sutcliffe, con valor de 0,8265 y una R2 de 0,96, lo cual mostró su alta eficiencia. Conclusión. La implementación de mecanismos que monitoreen constantemente los efluentes de los drenes de las cuencas es imperativo dentro del territorio mexicano en procura del cuidado de los cuerpos de aguas nacionales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction. The deterioration of water resources associated with anthropogenic activity, has been a central theme in the world summits held in the last quarter of the 20th century. In the agreements have transcended the importance of evaluating the impact of diffuse pollution intrusion in each territory. Objective. To validate the efficiency of the SWAT model in the Lower Basin of the Río Mayo in the State of Sonora, Mexico. Materials and methods. The SWAT model was used to carry out the hydrological simulation,to know the contributions of diffuse pollution within the Lower Basin of the Río Mayo in the State of Sonora, Mexico. The data analyzed were precipitation, temperature, vegetation cover, orography, types and land uses. Results. An inventory of diffuse pollution agents dragged towards the exorheic drains of the basin as well as annual measurement and their georeferenced location, where the contribution of nitrates and phosphates stands out as remnants of the agricultural activity developed in the basin. The information was validated with the Nash-Sutcliffe coefficient of efficiency, with a value of 0.8265 and an R2 of 0.96, which showed its high efficiency. Conclusion. Implementation of mechanisms that constantly monitor the effluents from the drains of the basins is imperative within the Mexican territory in order to care for the national water bodies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Modelo SWAT]]></kwd>
<kwd lng="es"><![CDATA[escorrentía]]></kwd>
<kwd lng="es"><![CDATA[noroeste de México]]></kwd>
<kwd lng="es"><![CDATA[suelo agrícola]]></kwd>
<kwd lng="es"><![CDATA[cuerpos de agua]]></kwd>
<kwd lng="en"><![CDATA[SWAT model]]></kwd>
<kwd lng="en"><![CDATA[runoff]]></kwd>
<kwd lng="en"><![CDATA[northwestern Mexico]]></kwd>
<kwd lng="en"><![CDATA[agricultural land]]></kwd>
<kwd lng="en"><![CDATA[bodies of water]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguilar]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[CALIDAD DEL AGUA Un enfoque multidisciplinario.]]></source>
<year>2010</year>
<page-range>308</page-range><publisher-loc><![CDATA[Ciudad de Me&#769;xico, México, ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional Auto&#769;noma de Me&#769;xico, IIEc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Zhong]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Shen]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluating the impacts of soil data on hydrological and nonpoint source pollution prediction]]></article-title>
<source><![CDATA[Sci. Total Environ]]></source>
<year>2016</year>
<volume>563</volume>
<page-range>19-28</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="">
<collab>CONABIO (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad).</collab>
<source><![CDATA[Portal de geoinformación; sistema nacional de información sobre biodiversidad.]]></source>
<year>2017</year>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<collab>CONAGUA (Comisión Nacional del Agua).</collab>
<source><![CDATA[Agenda del agua 2030. Avances y logros 2012.]]></source>
<year>2012</year>
<page-range>30</page-range><publisher-loc><![CDATA[Coyoacán, México, D.F ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría de Medio Ambiente y Recursos Naturales.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<collab>CONAGUA (Comisión Nacional del Agua).</collab>
<source><![CDATA[Atlas del Agua en México]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Ciudad de México. México. ]]></publisher-loc>
<publisher-name><![CDATA[Comisión Nacional del Agua,]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="">
<collab>CONAGUA (Comisión Nacional del Agua)</collab>
<source><![CDATA[Banco nacional de datos de aguas superficiales]]></source>
<year>2017</year>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cotler-A&#769;valos]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Galindo-Alca&#769;ntar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gonza&#769;lez-Mora]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Pineda-Lo&#769;pez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Ri&#769;os-Patro&#769;n]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Cuencas hidrográficas. Fundamentos y perspectivas para su manejo y gestión.]]></source>
<year>2013</year>
<page-range>36</page-range><publisher-loc><![CDATA[Ciudad de México, México. ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría de Medio Ambiente y Recursos Naturales.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efecto de la contaminación por metales pesados en los ecosistemas costeros del sureste de México.]]></article-title>
<source><![CDATA[Kuxulkab&#8217;]]></source>
<year>2014</year>
<volume>19</volume>
<numero>65</numero>
<issue>65</issue>
<page-range>68</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Durán]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Paris]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Maitre]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Marino]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnóstico ambiental en la zona del cinturón hortícola de la ciudad de Santa Fe.]]></article-title>
<source><![CDATA[Rev. Fac. Cs. Agrarias. Universidad Nacional de Cuyo]]></source>
<year>2016</year>
<volume>48</volume>
<page-range>129-43</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Encarna]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Albiac]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of nonpoint pollution instruments: The case of Spanish agriculture]]></article-title>
<source><![CDATA[Int. J. Water Resources Develop]]></source>
<year>2012</year>
<volume>28</volume>
<page-range>73-88</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Holden]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Haygarth]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[MacDonald]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Jenkins]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Sapiets]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Orr]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Benton]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Agriculture&#8217;s impacts on water quality.]]></source>
<year>2015</year>
<page-range>21</page-range><publisher-loc><![CDATA[United Kingdom ]]></publisher-loc>
<publisher-name><![CDATA[The UK Water Partnership]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ouyang]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Andrea]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Long-term diffuse phosphorus pollution dynamics under the combined influence of land use and soil property variations.]]></article-title>
<source><![CDATA[Science of The Total Environment]]></source>
<year>2017</year>
<volume>579</volume>
<page-range>1894-903</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lasagna]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Luca]]></surname>
<given-names><![CDATA[DD]]></given-names>
</name>
<name>
<surname><![CDATA[Franchino]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrate contamination of groundwater in the western Po Plain (Italy): the effects of groundwater and surface water interactions.]]></article-title>
<source><![CDATA[Environmental Earth Sciences]]></source>
<year>2016</year>
<volume>75</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Luan]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Quantitative study of the crop production water footprint using the SWAT model.]]></article-title>
<source><![CDATA[Ecological Indicators]]></source>
<year>2018</year>
<volume>89</volume>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<collab>Millennium Ecosystem Assessment</collab>
<source><![CDATA[Ecosystems and Human Well-being.]]></source>
<year>2005</year>
<page-range>138</page-range><publisher-loc><![CDATA[Washington, D.C., USA, Island ]]></publisher-loc>
<publisher-name><![CDATA[Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nash]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Sutcliffe]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[River flow forecasting through conceptual models Part I-A discussion of principles.]]></article-title>
<source><![CDATA[Journal of Hydrology]]></source>
<year>1970</year>
<volume>10</volume>
<page-range>282-90</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neitsch]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Arnold]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Kiniry]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Soil &amp; Water Assessment Tool]]></source>
<year>2011</year>
<page-range>618</page-range><publisher-loc><![CDATA[Temple, USA. ]]></publisher-loc>
<publisher-name><![CDATA[Texas Water Resources Institute.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pe&#769;rez Espejo]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilar Ibarra]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hansen]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Gonza&#769;lez Rodri&#769;guez]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gonza&#769;lez Ma&#769;rquez]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
<name>
<surname><![CDATA[Bernal Gonza&#769;lez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Santos Baca]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Jara Durán]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Agricultura y contaminacio&#769;n del agua.]]></source>
<year>2012</year>
<page-range>288</page-range><publisher-loc><![CDATA[Me&#769;xico, D.F., UNAM ]]></publisher-loc>
<publisher-name><![CDATA[Instituto de Investigaciones Econo&#769;micas.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rahmati]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Samani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Mahmoodi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Mahdavi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of the contribution of N-fertilizers to nitrate pollution of groundwater in Western Iran (case study: Ghorveh-Dehgelan aquifer).]]></article-title>
<source><![CDATA[Water Quality Exposure and Health]]></source>
<year>2014</year>
<volume>7</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>143-51</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shrestha]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Semkuyu]]></surname>
<given-names><![CDATA[DJ]]></given-names>
</name>
<name>
<surname><![CDATA[Pandey]]></surname>
<given-names><![CDATA[VP.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of groundwater vulnerability and risk to pollution in Kathmandu Valley.]]></article-title>
<source><![CDATA[Science of The Total Environment]]></source>
<year>2016</year>
<volume>556</volume>
<page-range>23-35</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="">
<collab>SIAP (Sistema de Información Agroalimentaria y Pesquera)</collab>
<source><![CDATA[Anuario estadístico de la producción agrícola]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Cobelas]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impactos del nitrógeno agrícola en los ecosistemas acuáticos.]]></article-title>
<source><![CDATA[Revista Ecosistemas]]></source>
<year>2017</year>
<volume>26</volume>
<page-range>37-44</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[VP]]></given-names>
</name>
<name>
<surname><![CDATA[Frevert]]></surname>
<given-names><![CDATA[DK.]]></given-names>
</name>
</person-group>
<source><![CDATA[Watershed models.]]></source>
<year>2005</year>
<page-range>678</page-range><publisher-loc><![CDATA[CRC Press ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Inman]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Lai]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Fanqiao]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jianbin]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Surridge]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mitigation of diffuse water pollution from agriculture in England and China, and the scope for policy transfer]]></article-title>
<source><![CDATA[Land Use Policy]]></source>
<year>2017</year>
<volume>61</volume>
<page-range>208-19</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="">
<collab>Texas A&amp;M University</collab>
<source><![CDATA[Global Weather Data for SWAT]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Xiao]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ji]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Relating landscape characteristics to non-point source pollution in mine waste-located watersheds using geospatial techniques.]]></article-title>
<source><![CDATA[Journal of Environmental Management]]></source>
<year>2007</year>
<volume>82</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>111-9</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Ouyang]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Hao]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Combined impacts of precipitation and temperature on diffuse phosphorus pollution loading and critical source area identification in a freeze-thaw area.]]></article-title>
<source><![CDATA[Science of The Total Environment]]></source>
<year>2016</year>
<volume>553</volume>
<page-range>607-61</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wellman]]></surname>
<given-names><![CDATA[TP]]></given-names>
</name>
<name>
<surname><![CDATA[Rupert]]></surname>
<given-names><![CDATA[MG.]]></given-names>
</name>
</person-group>
<source><![CDATA[Groundwater Quality, Age, and Susceptibility and Vulnerability to Nitrate Contamination with Linkages to Land Use and Groundwater Flow, Upper Black Squirrel Creek Basin, Colorado, 2013. U.S.]]></source>
<year>2016</year>
<page-range>78</page-range><publisher-loc><![CDATA[USGS ]]></publisher-loc>
<publisher-name><![CDATA[Department of the Interior, U.S. Geological Survey. Reston]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Gu]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Urban rivers as hotspots of regional nitrogen pollution.]]></article-title>
<source><![CDATA[Environmental Pollution.]]></source>
<year>2015</year>
<volume>205</volume>
<page-range>139-44</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessing the effects of landscape pattern on river water quality at multiple scales: a case study of the Dongjiang River watershed, China]]></article-title>
<source><![CDATA[Ecological Indicators]]></source>
<year>2012</year>
<volume>23</volume>
<page-range>166-75</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
