{"id":3842,"date":"2025-09-27T16:34:37","date_gmt":"2025-09-27T19:34:37","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=3842"},"modified":"2025-09-27T16:34:39","modified_gmt":"2025-09-27T19:34:39","slug":"acao-humana-leva-rio-ganges-a-pior-seca-da-historia-revela-estudo","status":"publish","type":"post","link":"https:\/\/www.portalam9.com.br\/?p=3842","title":{"rendered":"A\u00e7\u00e3o humana leva rio Ganges \u00e0 pior seca da hist\u00f3ria, revela estudo"},"content":{"rendered":"\n

Tempo de leitura: 3 minutos <\/em><\/p>\n\n\n\n

Conhecido por ser um dos locais mais importantes e sagrados da \u00cdndia, sendo essencial para cerca de 600 milh\u00f5es de pessoas no pa\u00eds, o rio Ganges est\u00e1 sofrendo a pior seca em 1,3 mil anos devido \u00e0 a\u00e7\u00e3o humana. A descoberta foi realizada por pesquisadores locais e norte-americanos.<\/p>\n\n\n\n

Utilizando dados hist\u00f3ricos, registros paleoclim\u00e1ticos e modelos hidrol\u00f3gicos, pesquisadores do Instituto Indiano de Tecnologia Gandhinagar e da Universidade do Arizona, nos Estados Unidos, detectaram a seca mais severa da hist\u00f3ria do rio. Os resultados foram publicados na revista cient\u00edfica Proceedings of the National Academy of Sciences na segunda-feira (22\/9).<\/p>\n\n\n\n

Tamb\u00e9m foi identificado que grande parte dos\u00a0modelos clim\u00e1ticos atuais\u00a0n\u00e3o conseguiu perceber a tend\u00eancia severa de seca na regi\u00e3o.<\/p>\n\n\n\n

\n

\u201cA seca recente est\u00e1 muito al\u00e9m da abrang\u00eancia da variabilidade clim\u00e1tica do \u00faltimo mil\u00eanio, e a maioria dos modelos clim\u00e1ticos globais n\u00e3o consegue capt\u00e1-la. Nossas descobertas ressaltam a necessidade urgente de examinar as intera\u00e7\u00f5es entre os fatores que controlam a precipita\u00e7\u00e3o das mon\u00e7\u00f5es de ver\u00e3o, incluindo a variabilidade clim\u00e1tica em larga escala e as for\u00e7as antropog\u00eanicas\u201d, escreveram os autores no artigo.<\/p>\n<\/blockquote>\n\n\n\n

Tecnologia e dados<\/h2>\n\n\n\n

Inicialmente, a equipe de pesquisa reconstruiu o fluxo do rio nos \u00faltimos 1,3 mil anos (de 700 a 2012 d.C.) por meio da an\u00e1lise de dados de an\u00e9is de \u00e1rvores, compilado pelo Monsoon Asia Drought Atlas (Mada), projeto sobre secas e pluviosidade na \u00c1sia. Os n\u00fameros sobre essa camada da planta revelam a hist\u00f3ria ambiental, identificando per\u00edodos de seca, abund\u00e2ncia de \u00e1gua e mudan\u00e7as clim\u00e1ticas.<\/p>\n\n\n\n

Em seguida, foram utilizados programas de computador para combinar os dados dos an\u00e9is de \u00e1rvores com registros modernos, criando uma linha do tempo do fluxo do rio Ganges. Compara\u00e7\u00f5es com secas e o per\u00edodos de fome documentados garantiram a precis\u00e3o do modelo.<\/p>\n\n\n\n

\"Imagem
Tuul & Bruno Morandi\/Getty Images<\/em><\/figcaption><\/figure>\n\n\n\n

A investiga\u00e7\u00e3o confirmou que a seca mais recente, de 1991 a 2020, \u00e9 76% mais grave do que a pior registrada anteriormente, no s\u00e9culo 16. Atualmente, o rio Ganges est\u00e1 mais seco em geral. e os per\u00edodos de estiagem ocorrem com mais frequ\u00eancia e por mais tempo.<\/p>\n\n\n\n

De acordo com os pesquisadores, a a\u00e7\u00e3o humana \u00e9 a principal respons\u00e1vel pelo decl\u00ednio h\u00eddrico do Ganges. Mesmo alguns padr\u00f5es clim\u00e1ticos naturais tamb\u00e9m contribuindo para isso, o enfraquecimento das mon\u00e7\u00f5es de ver\u00e3o \u2014 chuvas de ver\u00e3o que \u201calimentam\u201d<\/em> o rio \u2014 \u00e9 um fator mais determinante.<\/p>\n\n\n\n

A polui\u00e7\u00e3o do ar e o aquecimento do Oceano \u00cdndico provocados pela atividades humana afetam as mon\u00e7\u00f5es, que, consequentemente, diminui o volume de \u00e1gua no rio.<\/p>\n\n\n\n

O que fazer para salvar o rio Ganges<\/h2>\n\n\n\n

Salvar o rio Ganges \u00e9 essencial, e os cientistas defendem a ado\u00e7\u00e3o de duas linhas de a\u00e7\u00e3o priorit\u00e1rias: a melhoria de modelos clim\u00e1ticos, para que levem em conta os\u00a0impactos da atividade humana\u00a0na regi\u00e3o, e a cria\u00e7\u00e3o de t\u00e9cnicas de gest\u00e3o de \u00e1gua para evitar crises de abastecimento.<\/p>\n\n\n\n

\n

\u201cO rio Ganges tem profundo significado religioso, cultural e econ\u00f4mico para milh\u00f5es de pessoas que vivem na \u00cdndia, Nepal e Bangladesh. \u00c9 importante implementar estrat\u00e9gias adaptativas de gest\u00e3o de \u00e1gua para garantir a disponibilidade de \u00e1gua doce da bacia do Ganges em um clima em mudan\u00e7a\u201d, finalizaram os autores.<\/p>\n<\/blockquote>\n\n\n\n

Fonte: Metr\u00f3poles \/ <\/strong>Foto: Andrea Pistolesi\/Getty Images
<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Tempo de leitura: 3 minutos Conhecido por ser um dos locais mais importantes e sagrados<\/p>\n","protected":false},"author":3,"featured_media":3843,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3842","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mundo"],"yoast_head":"\nA\u00e7\u00e3o humana leva rio Ganges \u00e0 pior seca da hist\u00f3ria, revela estudo - Portal Amazonas 9<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/portalam9.com.br\/?p=3842\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A\u00e7\u00e3o humana leva rio Ganges \u00e0 pior seca da hist\u00f3ria, revela estudo - Portal Amazonas 9\" \/>\n<meta property=\"og:description\" content=\"Tempo de leitura: 3 minutos Conhecido por ser um dos locais mais importantes e sagrados\" \/>\n<meta property=\"og:url\" content=\"https:\/\/portalam9.com.br\/?p=3842\" \/>\n<meta property=\"og:site_name\" content=\"Portal Amazonas 9\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-27T19:34:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-27T19:34:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/portalam9.com.br\/wp-content\/uploads\/2025\/09\/rio-ganges-seco.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Reda\u00e7\u00e3o Portal AM9\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Reda\u00e7\u00e3o Portal AM9\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842\"},\"author\":{\"name\":\"Reda\u00e7\u00e3o Portal AM9\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/#\\\/schema\\\/person\\\/98ef830cc0fc3a08e33cb435efda505a\"},\"headline\":\"A\u00e7\u00e3o humana leva rio Ganges \u00e0 pior seca da hist\u00f3ria, revela estudo\",\"datePublished\":\"2025-09-27T19:34:37+00:00\",\"dateModified\":\"2025-09-27T19:34:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842\"},\"wordCount\":595,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/#\\\/schema\\\/person\\\/98ef830cc0fc3a08e33cb435efda505a\"},\"image\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.portalam9.com.br\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/rio-ganges-seco.webp\",\"articleSection\":[\"Mundo\"],\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/portalam9.com.br\\\/?p=3842#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842\",\"url\":\"https:\\\/\\\/portalam9.com.br\\\/?p=3842\",\"name\":\"A\u00e7\u00e3o humana leva rio Ganges \u00e0 pior seca da hist\u00f3ria, revela estudo - 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