{"id":21984,"date":"2024-08-14T16:32:00","date_gmt":"2024-08-14T19:32:00","guid":{"rendered":"https:\/\/www.diariodepe.com.br\/xinhua\/?p=21984"},"modified":"2024-08-13T18:45:28","modified_gmt":"2024-08-13T21:45:28","slug":"cabeceiras-do-mais-longo-rio-da-china-enfrentam-futuro-mais-quente-e-umido-com-crescentes-desafios","status":"publish","type":"post","link":"https:\/\/diariodepe.com.br\/xinhua\/2024\/08\/14\/cabeceiras-do-mais-longo-rio-da-china-enfrentam-futuro-mais-quente-e-umido-com-crescentes-desafios\/","title":{"rendered":"Cabeceiras do mais longo rio da China enfrentam futuro mais quente e \u00famido com crescentes desafios"},"content":{"rendered":"\n<p>Xining &#8211; Estima-se que as cabeceiras do Yangtze, o rio mais longo da China, experimentem uma tend\u00eancia de aquecimento e umidifica\u00e7\u00e3o no futuro, apresentando v\u00e1rios desafios, de acordo com pesquisadores chineses.<\/p>\n\n\n\n<p>&nbsp; &nbsp;A informa\u00e7\u00e3o foi revelada durante uma recente expedi\u00e7\u00e3o cient\u00edfica conduzida pelos pesquisadores nas regi\u00f5es de cabeceiras dos rios Yangtze e Lancang, na Prov\u00edncia de Qinghai, no noroeste da China.<\/p>\n\n\n\n<p>&nbsp; &nbsp;At\u00e9 o final do s\u00e9culo 21, em cen\u00e1rios de emiss\u00f5es moderadas, as temperaturas m\u00e9dias na \u00e1rea da nascente do Yangtze podem subir de 2 a 4 graus Celsius, com potencial aumento das precipita\u00e7\u00f5es entre 10% e 30%, disse Qin Pengcheng, engenheiro s\u00eanior do centro meteorol\u00f3gico da bacia do rio Yangtze.<\/p>\n\n\n\n<p>&nbsp; &nbsp;As cabeceiras do rio Yangtze ficam no planalto Qinghai-Xizang, com uma altitude m\u00e9dia de mais de 4.500 metros. O planalto, conhecido como &#8220;o teto do mundo&#8221;, tamb\u00e9m \u00e9 o ber\u00e7o do rio Amarelo, o segundo maior rio do pa\u00eds, e do rio Lancang (conhecido como rio Mekong depois de sair da China).<\/p>\n\n\n\n<p>&nbsp; &nbsp;O aquecimento e o aumento da umidade na regi\u00e3o da nascente do Yangtze ampliaram os riscos, incluindo o encolhimento das geleiras e o aumento do fluxo de \u00e1gua e sedimentos.<\/p>\n\n\n\n<p>&nbsp; &nbsp;&#8220;O recuo acelerado das geleiras na regi\u00e3o \u00e9 evidente, com geleiras ic\u00f4nicas mostrando encolhimento gradual&#8221;, disse Fan Yue, membro da expedi\u00e7\u00e3o cient\u00edfica.<\/p>\n\n\n\n<p>&nbsp; &nbsp;Al\u00e9m disso, eventos extremos de precipita\u00e7\u00e3o no curso superior do Yangtze t\u00eam aumentado em frequ\u00eancia e intensidade. Em agosto de 2023, a esta\u00e7\u00e3o hidrol\u00f3gica de Zhimenda registrou uma inunda\u00e7\u00e3o \u00fanica em um s\u00e9culo desde sua cria\u00e7\u00e3o em 1956, causando graves danos \u00e0s estradas locais.<\/p>\n\n\n\n<p>&nbsp; &nbsp;De 1\u00ba a 22 de julho deste ano, a precipita\u00e7\u00e3o na \u00e1rea de origem do Yangtze ficou 53,5% acima da m\u00e9dia do mesmo per\u00edodo dos anos anteriores e quebrou um recorde na \u00faltima d\u00e9cada.<\/p>\n\n\n\n<p>&nbsp; &nbsp;Embora os esfor\u00e7os de conserva\u00e7\u00e3o da China tenham melhorado a biodiversidade na regi\u00e3o, especialistas pedem uma resposta global e medidas conjuntas para combater o aquecimento global, juntamente com maior aten\u00e7\u00e3o e pesquisa sobre o aquecimento do Yangtze e cabeceiras mais \u00famidas.<\/p>\n\n\n\n<p>&nbsp; &nbsp;Componentes vitais do ecossistema do planalto Qinghai-Xizang, as regi\u00f5es de cabeceira dos rios Yangtze e Lancang desempenham um papel crucial na salvaguarda dos recursos h\u00eddricos, protegendo a biodiversidade e garantindo a estabilidade ecol\u00f3gica.<\/p>\n\n\n\n<p>&nbsp; &nbsp;Expedi\u00e7\u00f5es cient\u00edficas anuais \u00e0 nascente do rio Yangtze s\u00e3o realizadas desde 2012.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Xining &#8211; Estima-se que as cabeceiras do Yangtze, o rio mais longo da China, experimentem uma tend\u00eancia de aquecimento e umidifica\u00e7\u00e3o no futuro, apresentando v\u00e1rios desafios, de acordo com pesquisadores chineses. &nbsp; &nbsp;A informa\u00e7\u00e3o foi revelada durante uma recente expedi\u00e7\u00e3o&#8230;<\/p>\n","protected":false},"author":3,"featured_media":21985,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21984","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geral"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cabeceiras do mais longo rio da China enfrentam futuro mais quente e \u00famido com crescentes desafios - Xinhua - Diario de Pernambuco<\/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:\/\/diariodepe.com.br\/xinhua\/2024\/08\/14\/cabeceiras-do-mais-longo-rio-da-china-enfrentam-futuro-mais-quente-e-umido-com-crescentes-desafios\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cabeceiras do mais longo rio da China enfrentam futuro mais quente e \u00famido com crescentes desafios - Xinhua - Diario de Pernambuco\" \/>\n<meta property=\"og:description\" content=\"Xining &#8211; Estima-se que as cabeceiras do Yangtze, o rio mais longo da China, experimentem uma tend\u00eancia de aquecimento e umidifica\u00e7\u00e3o no futuro, apresentando v\u00e1rios desafios, de acordo com pesquisadores chineses. &nbsp; &nbsp;A informa\u00e7\u00e3o foi revelada durante uma recente expedi\u00e7\u00e3o...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/diariodepe.com.br\/xinhua\/2024\/08\/14\/cabeceiras-do-mais-longo-rio-da-china-enfrentam-futuro-mais-quente-e-umido-com-crescentes-desafios\/\" \/>\n<meta property=\"og:site_name\" content=\"Xinhua - Diario de Pernambuco\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-14T19:32:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/diariodepe.com.br\/xinhua\/wp-content\/uploads\/sites\/3\/2024\/08\/202408131a4e35dab14942a3a8c094999688d75c_XxjwspP007030_20240813_CBMFN0A001.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Marcelo Oliveira de A. 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Since July 20, a Chinese expedition team has been conducting research on the water resources and ecological environment in the headwater regions of the Yangtze and Lancang rivers. The expedition, comprising around 20 members, carried out scientific investigations into river hydrology, water ecology, soil erosion, glaciers and permafrost in Qinghai Province. Key research projects include estimating the carbon stock of wetlands, assessing the impacts of permafrost thawing on the plateau, and measuring the thickness of permafrost on glaciers. Qinghai is home to the Sanjiangyuan area, which contains the headwaters of China's three major rivers: the Yangtze River, the longest in China; the Yellow River, the second-longest; and the Lancang River, which is known as the Mekong River after it flows out of China. As important parts of the Qinghai-Xizang Plateau ecosystem, the headwater regions of the Yangtze and Lancang rivers play a crucial role in safeguarding water resources, protecting biodiversity and ensuring ecological stability. Annual scientific expeditions to the source of the Yangtze River have been conducted since 2012. 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As important parts of the Qinghai-Xizang Plateau ecosystem, the headwater regions of the Yangtze and Lancang rivers play a crucial role in safeguarding water resources, protecting biodiversity and ensuring ecological stability. Annual scientific expeditions to the source of the Yangtze River have been conducted since 2012. 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