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	</topic><topic id="http://thesaurus.bhlscielo.org/vocab/pt?tema=777"><instanceOf><topicRef xlink:href="#term"/></instanceOf><baseName><baseNameString>Desertificação</baseNameString></baseName>  <occurrence>    <instanceOf>      <topicRef xlink:href="#scope-note"/>    </instanceOf><baseName><baseNameString><![CDATA[ <p>“Fenômeno de transformação de áreas anteriormente vegetadas em solos inférteis devido a ações antrópicas, como mau uso e exploração da terra. Pode também ocorrer por processos naturais, como, p. ex., devido a um ressecamento climático, que é uma diminuição de umidade por longos períodos de tempo. Degradação da terra nas zonas áridas, semi-áridas e subúmidas secas, resultantes de vários fatores, incluindo as variações climáticas e as atividades humanas (Dec.2.741, de 20.08.1998).”</p> ]]></baseNameString></baseName>  </occurrence>  <occurrence>    <instanceOf>      <topicRef xlink:href="#scope-note"/>    </instanceOf><baseName><baseNameString><![CDATA[ <p>"Transformation of areas formerly covered by vegetation in infertile land due to human activities, improper use of the soil and exploitation of the land. May also occur as a result of natural processes, for example a reduction of humidity lasting for long periods leading to the installation of a drier climate in a n area. Also land degradation in arid, semi-arid and dry subhumid areas resulting from a variety of factors, including climatic variations and human activities (Brazilian Decree 2.741, of August 20, 1998)."</p> ]]></baseNameString></baseName>  </occurrence>  <occurrence>    <instanceOf>      <topicRef xlink:href="#scope-note"/>    </instanceOf><baseName><baseNameString><![CDATA[ <p>"Fenómeno de transformación de áreas anteriormente cubiertas por venetación en tierras infertiles como resultado de las actividades humanas, del uso inadecuado del suelo y de la explotación de la tierra. También puede ocurrir como resultado de procesos naturales, como por ejemplo una reducción de la humedad por largos períodos, conducindo a la instalación de un clima más seco en un área. Designa también la degradación de la tierra en zonas áridas, semiáridas y subhúmedas como resultado de diversos factores, tales como variaciones climáticas y las actividades humanas" (Texto del Decreto brasileño n. 2.741, del 20 de agosto de 1998).</p> ]]></baseNameString></baseName>  </occurrence></topic>  <association>    <instanceOf>      <topicRef xlink:href="#broader-narrower"/>    </instanceOf>    <member>      <roleSpec>  <topicRef xlink:href="#narrower"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=777"/>    </member>    <member>      <roleSpec>  <topicRef xlink:href="#broader"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=362"/>    </member>  </association>  <association>    <instanceOf>      <topicRef xlink:href="#broader-narrower"/>    </instanceOf>    <member>      <roleSpec>  <topicRef xlink:href="#narrower"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=777"/>    </member>    <member>      <roleSpec>  <topicRef xlink:href="#broader"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=370"/>    </member>  </association>  <association>    <instanceOf>      <topicRef xlink:href="#broader-narrower"/>    </instanceOf>    <member>      <roleSpec>  <topicRef xlink:href="#narrower"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=777"/>    </member>    <member>      <roleSpec>  <topicRef xlink:href="#broader"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=759"/>    </member>  </association>  <association>    <instanceOf>      <topicRef xlink:href="#broader-narrower"/>    </instanceOf>    <member>      <roleSpec>  <topicRef xlink:href="#narrower"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=777"/>    </member>    <member>      <roleSpec>  <topicRef xlink:href="#broader"/>      </roleSpec>      <topicRef xlink:href="#http://thesaurus.bhlscielo.org/vocab/pt?tema=776"/>    </member>  </association></topicMap>