{"id":1092,"date":"2017-02-22T14:51:07","date_gmt":"2017-02-22T17:51:07","guid":{"rendered":"http:\/\/www.semiaridos.org\/?page_id=1092\/"},"modified":"2017-02-22T15:42:01","modified_gmt":"2017-02-22T18:42:01","slug":"regioes-semiaridas","status":"publish","type":"page","link":"https:\/\/www.semiaridos.org\/pt-br\/regioes-semiaridas\/","title":{"rendered":"REGI\u00d5ES SEMI\u00c1RIDAS"},"content":{"rendered":"

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REGI\u00d5ES SEMI\u00c1RIDAS<\/span><\/h1>\n

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Em geral se definem como semi\u00e1ridas \u00e0quelas regi\u00f5es onde as precipita\u00e7\u00f5es n\u00e3o chegam a atingir as necessidades de crescimento da vegeta\u00e7\u00e3o durante todo o ano. Ou seja, o \u00edndice de aridez (precipita\u00e7\u00f5es\/evapotranspira\u00e7\u00e3o potencial) n\u00e3o supera o 0,5 por cento.<\/h5><\/blockquote>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css_animation=”element_from_top” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” anchor=”chaco-trinacional” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” padding_top=”40″ transition_delay=”0″ css=”.vc_custom_1468190674564{margin-top: 0px !important;margin-bottom: 0px !important;padding-bottom: 0px !important;background-color: #dd9933 !important;}”][vc_column][vc_column_text]<\/p>\n

Chaco Trinacional<\/span><\/h3>\n

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[vc_column_text]O Grande Chaco Americano ou Chaco Trinacional<\/strong> \u00e9 uma regi\u00e3o de 1.000.000 de km2 localizada no centro da Am\u00e9rica do Sul. Argentina, Bol\u00edvia e Paraguai dividem este ecossistema, considerado uma das regi\u00f5es de maior diversidade ambiental e biol\u00f3gica do planeta e a maior \u00e1rea de bosque do continente depois da regi\u00e3o amaz\u00f4nica.<\/p>\n

Este ecossistema \u00e9 classificado segundo seu clima em tr\u00eas subzonas: o Chaco sub\u00famido, o Chaco semi\u00e1rido e o Chaco \u00e1rido.[\/vc_column_text][vc_separator type=”transparent”]<\/div><\/div>

[vc_column_text]O Chaco Semi\u00e1rido<\/strong>, com precipita\u00e7\u00f5es entre 750 e 500 mil\u00edmetros anuais, abrange Bol\u00edvia, a por\u00e7\u00e3o ocidental do Paraguai e a Argentina (metade ocidental das prov\u00edncias de Formosa e Chaco; a oriental de Salta; quase toda a prov\u00edncia de Santiago del Estero; norte, nordeste e centro de C\u00f3rdoba).<\/p>\n

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[vc_column_text]\u00c9 uma vasta plan\u00edcie interrompida por importantes cursos d\u2019\u00e1gua e por serranias que apresenta bosques adaptados \u00e0 estiagem. O clima \u00e9 continental, c\u00e1lido subtropical, com \u00e1reas que apresentam as m\u00e1ximas temperaturas do continente.[\/vc_column_text][vc_separator type=”transparent”]<\/div><\/div>
[vc_column_text]O potencial produtivo da regi\u00e3o \u00e9 muito alto. Apesar disso, esta regi\u00e3o est\u00e1 submetida a um severo processo de degrada\u00e7\u00e3o de seus recursos naturais e de sua biodiversidade. Estas condi\u00e7\u00f5es acentuam a marginaliza\u00e7\u00e3o social e econ\u00f4mica das comunidades ind\u00edgenas e fam\u00edlias camponesas que vivem nela.[\/vc_column_text][vc_separator type=”transparent”]<\/div><\/div>[\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1467867181942{padding-top: 5px !important;background-image: url(http:\/\/www.semiaridos.org\/files\/2016\/07\/Gran-Chaco-bg.png?id=390) !important;background-position: 0 0 !important;background-repeat: no-repeat !important;}” el_class=”mapas-sa”][vc_separator type=”transparent” thickness=”250″][vc_row_inner row_type=”row” type=”full_width” text_align=”right” css_animation=””][vc_column_inner width=”1\/2″][vc_separator type=”transparent”][\/vc_column_inner][vc_column_inner width=”1\/2″]
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Superficie<\/h3>

1.000.000 km2<\/p><\/div><\/div><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css_animation=”element_from_top” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” anchor=”nordeste-brasil” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” padding_top=”50″ transition_delay=”1″ css=”.vc_custom_1468190754600{padding-right: 15px !important;padding-left: 15px !important;}”][vc_column width=”1\/2″ css=”.vc_custom_1467867134389{padding-top: 5px !important;background-image: url(http:\/\/www.semiaridos.org\/files\/2016\/07\/Brasil-bg.png?id=389) !important;background-position: 0 0 !important;background-repeat: no-repeat !important;}” el_class=”mapas-sa”][vc_row_inner row_type=”row” type=”full_width” text_align=”right” css_animation=””][vc_column_inner width=”1\/2″]

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Habitantes<\/h3>

Casi 22 millones<\/p><\/div><\/div><\/div><\/div>

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Superficie<\/h3>

1.000.000 km2<\/p><\/div><\/div><\/div><\/div>[\/vc_column_inner][vc_column_inner width=”1\/2″][vc_separator type=”transparent”][\/vc_column_inner][\/vc_row_inner][\/vc_column][vc_column width=”1\/2″]

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Nordeste do Brasil<\/strong><\/span><\/h3>\n

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[vc_column_text]A regi\u00e3o semi\u00e1rida do Brasil abrange oito estados do Nordeste e Minas Gerais. \u00c9 a regi\u00e3o semi\u00e1rida com mais habitantes no mundo, com uma popula\u00e7\u00e3o de aproximadamente 22 milh\u00f5es de pessoas. A vegeta\u00e7\u00e3o predominante \u00e9 a caatinga, nome ind\u00edgena que significa \u201cbosque branco\u201d, pela cor branca caracter\u00edstica durante o per\u00edodo da seca, quando as folhas caem.[\/vc_column_text][vc_separator type=”transparent”]<\/div><\/div>
[vc_column_text]No entanto, esta \u00e9 apenas uma adapta\u00e7\u00e3o ecol\u00f3gica da vegeta\u00e7\u00e3o, para n\u00e3o continuar a perder \u00e1gua durante os per\u00edodos de baixa pluviosidade. A precipita\u00e7\u00e3o na \u00e1rea varia entre 250 mm e 800 mm por ano, concentrada num curto per\u00edodo de quatro meses. A elevada taxa de evapora\u00e7\u00e3o faz com que a quantidade de \u00e1gua evaporada seja maior do que a precipita\u00e7\u00e3o.[\/vc_column_text][vc_separator type=”transparent”]<\/div><\/div>
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