{"id":20343,"date":"2002-04-12T00:00:00","date_gmt":"2002-04-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/turberas-de-montana-de-galicia-genesis-propiedades-y-su-aplicacion-como-registros-ambientales-geoqua%c2%admicos\/"},"modified":"2002-04-12T00:00:00","modified_gmt":"2002-04-12T00:00:00","slug":"turberas-de-montana-de-galicia-genesis-propiedades-y-su-aplicacion-como-registros-ambientales-geoqua%c2%admicos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/turberas-de-montana-de-galicia-genesis-propiedades-y-su-aplicacion-como-registros-ambientales-geoqua%c2%admicos\/","title":{"rendered":"Turberas de monta\u00f1a de galicia. g\u00e9nesis, propiedades y su aplicaci\u00f3n como registros ambientales geoqu\u00edmicos"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Pontevedra Pombal Francisco Xabier <\/strong><\/h2>\n<p>En galicia existen \u00e1reas en las que son frecuentes, en ocasiones abundantes, diferentes tipos de turberas. Su formaci\u00f3n se remota a 11.000-10.000 a\u00f1os b.P., En zonas que sufrieron de la \u00faltima glaciaci\u00f3n, mientras que las restantes son de edad holocena. Las principales fases de formaci\u00f3n de estas turberas tuvieron lugar entre 9.000 y 8.000 a\u00f1os b.P., Entre 5.000 y 4.000 a\u00f1os b.P., Y entre 3.000 y 2.000 a\u00f1os b.P.; Aunque episodios locales de erosi\u00f3n activaron la formaci\u00f3n de turba en diversos per\u00edodos posteriores al 5.000 b.P., Debido al aumento del flujo de agua superficial. Durante esta investigaci\u00f3n se ha iniciado un inventario que hasta el momento ha generado una extensi\u00f3n de turberas de 10.000 ha, incrementado en 10 veces las estimaciones aceptadas en la actualidad.  el espesor m\u00e1ximo medio de la turba es de 2-3 m y las tasas de acumulaci\u00f3n m\u00e1s frecuentes var\u00edan entre 0,2 y 0,7 mm a\u00f1o-1. La acumulaci\u00f3n de materia seca var\u00eda entre 40 y 120 g m-2 a\u00f1o-1 y tiende a ser mayor en las turberas ombrotr\u00f3ficas de cobertor en comparaci\u00f3n con la minerotr\u00f3ficas. Los valores m\u00e1s bajos observados para las minerotr\u00f3ficas son, al menos en parte, consecuencia de la erosi\u00f3n, compactaci\u00f3n y recrecimiento de la turba. Las propiedades de la turba son bastante variables, el rango de densidad observado se encuentra entre 0,06 y 0,6 mg m-3, la porosidad total entre 85 y 90% y el contendio en materias org\u00e1nica entre 25 y 95%.  en su mayor parte son turberas \u00e1cidas (ph 3,0-5,0). Excepcionalmente, algunas turberas minerotr\u00f3ficas afectadas por aguas que drenan niveles de caliza tienen ph en torno a 6,0. La capacidad de intercambio cati\u00f3nico efectiva (cice), que depende del grado de descomposici\u00f3n de la materia org\u00e1nica y del ph, var\u00eda de 5 a 20 cmol(+) kg-1. Aunque hay cierta heterogeneidad, la secuencia de abundancia de cationes en las turberas ombrotr\u00f3ficas es mg+2&gt;ca2+&gt;al+3&gt;na+ -k+&gt;fe+2-mn+2 en la parte superfic<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Turberas de monta\u00f1a de galicia. g\u00e9nesis, propiedades y su aplicaci\u00f3n como registros ambientales geoqu\u00edmicos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Turberas de monta\u00f1a de galicia. g\u00e9nesis, propiedades y su aplicaci\u00f3n como registros ambientales geoqu\u00edmicos <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Pontevedra Pombal Francisco Xabier <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 04\/12\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Antonio Mart\u00ednez Cortizas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ward Chesworth <\/li>\n<li>augusto P\u00e9rez albert\u00ed (vocal)<\/li>\n<li>peter Buurman (vocal)<\/li>\n<li> Fraga vila Mar\u00eda isabel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Pontevedra Pombal Francisco Xabier En galicia existen \u00e1reas en las que son frecuentes, en ocasiones abundantes, diferentes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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