<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222017000200077</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2017-02-08</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The runoff variation characteristics of Dongting Lake, China]]></article-title>
<article-title xml:lang="es"><![CDATA[Características de la variación de escurrimiento del lago Dongting, China]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mao]]></surname>
<given-names><![CDATA[Dehua]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Feng]]></surname>
<given-names><![CDATA[Chang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Hui]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[Guangwei]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Zhengzui]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[Ruizhi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hunan Normal University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>China</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hydrology and Water Resources Survey Bureau of Hunan Province  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>China</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hunan Industry University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>China</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>2</numero>
<fpage>77</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222017000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222017000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222017000200077&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The runoff variation characteristics of Dongting Lake were analyzed by applying the methods of concentration degree, concentration period, Mann-Kendall trend test, and variation coefficient. The analysis showed that: 1) The runoff concentration period of Dongting Lake occurs mainly between June and July of each year, with the peak time in late June-early July, and the composite vector directions in concentration period range from 103.2° to 190.2°; 2) The runoff variation coefficient ranges from 0.194 to 0.761, which indicates the instability of runoff. Extreme ratios of inflow and outflow are over 0.6 with an obvious attenuation; 3) The alternating pattern between wet years and dry years showed that the water distribution of the four rivers is relatively equal, while Ouchikou from three bayous is more violent, accounting for 32.79% of wet years and 57.38% of dry years respectively. The drastic change of annual water allocation is adverse to rational utilization of water resources.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se analizaron las características de la variación de escurrimiento del lago Dongting mediante la aplicación de los métodos de grado de concentración, periodo de concentración, análisis de tendencias de Mann-Kendall y coeficiente de variación. El análisis mostró que 1) el periodo de concentración de escurrimiento del lago Dongting ocurre principalmente entre junio y julio de cada año, presentándose el tiempo máximo entre finales de junio y principios de julio y las direcciones de los vectores compuestos en el periodo de concentración van de 103.2° a 190.2°; 2) el coeficiente de variación del escurrimiento oscila entre 0.194 y 0.761, lo cual indica la inestabilidad del escurrimiento. Las proporciones extremas del flujo de entrada y el flujo de salida son superiores a 0.6, con una obvia atenuación; 3) El patrón alternante entre los años húmedos y los años secos mostró que la distribución de agua de los cuatro ríos es relativamente igual, mientras que en Ouchikou, de tres canales pantanosos, es más violento, representando el 32.79% de los años húmedos y el 57.38% de los años secos, respectivamente. El drástico cambio de asignación anual de agua es adverso a la explotación racional de los recursos hídricos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Runoff variation characteristics]]></kwd>
<kwd lng="en"><![CDATA[annual variation]]></kwd>
<kwd lng="en"><![CDATA[concentration degree and period]]></kwd>
<kwd lng="en"><![CDATA[interannual variation]]></kwd>
<kwd lng="en"><![CDATA[trend analysis]]></kwd>
<kwd lng="en"><![CDATA[Dongting Lake]]></kwd>
<kwd lng="es"><![CDATA[características de variación de escurrimiento]]></kwd>
<kwd lng="es"><![CDATA[variación anual]]></kwd>
<kwd lng="es"><![CDATA[grado y periodo de concentración]]></kwd>
<kwd lng="es"><![CDATA[variación interanual]]></kwd>
<kwd lng="es"><![CDATA[análisis de tendencias]]></kwd>
<kwd lng="es"><![CDATA[lago Dongting]]></kwd>
</kwd-group>
</article-meta>
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