{"id":1246,"date":"2024-09-30T14:33:53","date_gmt":"2024-09-30T12:33:53","guid":{"rendered":"https:\/\/sitesize.net\/museuviu\/?p=1246"},"modified":"2025-01-15T14:39:19","modified_gmt":"2025-01-15T12:39:19","slug":"la-fractalitat-bioregional","status":"publish","type":"post","link":"https:\/\/sitesize.net\/museuviu\/2024\/09\/30\/la-fractalitat-bioregional\/","title":{"rendered":"La fractalitat bioregional"},"content":{"rendered":"\n
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La fractalitat bioregional<\/strong>
Recorregut de l\u2019Esfera del Congost<\/em><\/p>\n\n\n\n

Dissabte 21 de setembre de 2024<\/em><\/p>\n\n\n\n

(Fotografies de Sebasti\u00e0 Masramon)<\/p>\n\n\n\n

El primer recorregut va disc\u00f3rrer per la dimensi\u00f3 bioregional o el que anomenem com a corredor biocultural del Congost. L\u2019exploraci\u00f3 col\u00b7lectiva es va realitzar durant una jornada en la totalitat de la conca del riu, des del seu naixement fins a la conflu\u00e8ncia amb el riu Mogent a Montmel\u00f3. Part del recorregut es va fer en autob\u00fas i altra part caminant. El punt d\u2019inici va ser a Sant Cugat de Gavadons al terme de Collsuspina al Moian\u00e8s, a prop de la Font d\u2019en Reg\u00e0s, on es considera neix el Congost. Aquest punt \u00e9s essencial per comprendre la condici\u00f3 regional de les conques fluvial, \u00e9s en aquest lloc on se situa el v\u00e8rtex que uneix les tres conques de la Catalunya central: la del riu Bes\u00f2s, la del Ter i la del Llobregat. Una acci\u00f3 de marcatge i connexi\u00f3 en la pedra del Pedr\u00f3 de Sant Cugat de Gavadons en va obrir el recorregut inici\u00e0tic per la conca del riu Congost.<\/p>\n\n\n\n

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Des d\u2019all\u00e0 vam anar visitant indrets que tenen relaci\u00f3 amb l\u2019aigua i s\u00f3n o han estat espais d\u2019un fort imaginari territorial. Al costat del santuari de la Verge de l’Ajuda en el terme municipal de Baleny\u00e0, accedim a la llera riu Congost, es mostra com una tra\u00e7a discreta i sovint seca que \u00e9s encara un torrent de muntanya que actua com a desgu\u00e0s de les serres i comen\u00e7a a davallar cap a Centelles. Poden anar trobant petites infraestructures hidr\u00e0uliques: ponts, molins, rescloses que ens parlen de l’aprofitament de l’aigua escassa en la cultura agr\u00e0ria. \u00c9s a partir del municipi de Centelles que el riu fa just\u00edcia al seu nom, la vall s’aprofundeix i entre les primeres cingleres prenem consci\u00e8ncia del tall que el riu ha obert entre els Cingles de Bert\u00ed i el mass\u00eds de la Calma. Sorpr\u00e8n que un riu ara tan modest hagi pogut fer una feina d’erosi\u00f3 tan important.
A Aiguafreda el riu Congost incorpora els grans torrents i rieres que venen de la falda del mass\u00eds del Montseny i que s\u00f3n els que en \u00e8poca de pluges alimenten el cabal principal del riu. S\u00f3n les rieres de Martinet i la riera d’Aven\u00e7\u00f3. Al costat del riu Congost i a recer de la font d’en Pin\u00f3s, aprofitem per a dinar i continuar amb l’an\u00e0lisi de la transformaci\u00f3 del riu en di\u00e0leg amb el paisatge accidentat dels cingles que ens rodegen.<\/p>\n\n\n\n

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Reprenent la ruta amb l’autob\u00fas arribem a la Garriga on finalitza el congost que dona nom al riu i que durant aquest tram ha encaixonat l’aigua i tamb\u00e9 la carretera i la l\u00ednia de ferrocarril de Vic. El paisatge s’obre a la plana del Vall\u00e8s i el riu s’eixampla i abasta un gran meandre lliure que alimentava una extensa zona d’aiguamolls. Ara tot aix\u00f2 \u00e9s el gran pol\u00edgon industrial de la Garriga, que com passar\u00e0 a partir d’aquest punt seran aquestes terres planes al costat del riu on se situar\u00e0 tota la ind\u00fastria que acompanya i en part s’aprofita els recursos del Congost.
Com una comprovaci\u00f3 patrimonial de la relaci\u00f3 hist\u00f2rica amb el riu, visitem la vila romana de Can Terr\u00e9s, la qual ens indica el l\u00edmit de la zona inundable del riu en situar-se sobre un petit tur\u00f3 al costat de la riera de Samal\u00fas i de la via romana que va esdevenir el cam\u00ed Ral que menava cap a Vic. En les runes muse\u00eftzades descobrim les piscines de les termes de la vila, evid\u00e8ncies de l’\u00fas i aprofitament de les aig\u00fces de la cultura romana en aquest indret.<\/p>\n\n\n\n

A mesura que davalla el riu Congost es va fent cada vegada m\u00e9s urb\u00e0, en una urbanitat mixta entre mosaic agroforestal, extensos pol\u00edgons industrials i de serveis i els nuclis urbanitzats de Les Franqueses, Canovelles i Granollers. La carretera circula paral\u00b7lela al riu i assenyala tamb\u00e9 aquest l\u00edmit ara molt artificial, en qu\u00e8 la contenci\u00f3 del riu i l’atenuaci\u00f3 dels seus meandres lliures ha anat reduint l’amplada de la llera per a encabir usos i servituds urbanes en el que abans era una extensa llera que abastava els moments extraordinaris de grans avingudes i riuades. Els esfor\u00e7os de municipis com el de Granollers per a suavitzar aquests l\u00edmits durs, intenten recuperar el moviment lliure del riu, s\u00f3n al mateix temps un benefici que aporta m\u00e9s biodiversitat natural i alhora protegeix de les avingudes creant zones d’inundaci\u00f3 controlada que disminueixen la velocitat de l’aigua en les riuades.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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Per a concloure el nostre recorregut de la conca, ens aturem al pont del Bes\u00f2s a Montmel\u00f3, exactament en l’indret on el riu Congost es troba amb el Mogent i esdevenen, sumant les seves aig\u00fces el riu Bes\u00f2s. Tot recuperant les imatges del trajecte realitzat, toquem les aig\u00fces del Bes\u00f2s i hi aboquem les mostres d’aigua que hem anat recollint del riu, les fonts, els bassals que hem anat trobant. La condici\u00f3 bioregional de la conca \u00e9s una unitat feta d’innumerables fragments, una fractal creixent i decreixent que ens omple de preguntes i posicionaments de perplexitat i tamb\u00e9 de la consci\u00e8ncia de la fragilitat de sistema fluvial i de la protecci\u00f3 que demana.<\/p>\n","protected":false},"excerpt":{"rendered":"

Recorregut de l\u2019Esfera del Congost. HIDROsfera Granollers
\nDissabte 21.9.2024<\/p>\n","protected":false},"author":1,"featured_media":1250,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,19,8],"tags":[],"class_list":["post-1246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conca-del-besos","category-hidrosfera-granollers","category-recorregut"],"yoast_head":"\nLa fractalitat bioregional - Museu Viu de les conques metropolitanes<\/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:\/\/sitesize.net\/museuviu\/2024\/09\/30\/la-fractalitat-bioregional\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La fractalitat bioregional - Museu Viu de les conques metropolitanes\" \/>\n<meta property=\"og:description\" content=\"Recorregut de l\u2019Esfera del Congost. 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