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Main Author:	Rolando Enrique Díaz Caravantes
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional Autónoma de México 2014
Subjects:	Ciencias de la Tierra Agua peri suelo urbano presión
Online Access:	https://www.redalyc.org/articulo.oa?id=56930750009
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Análisis geoespacial de la interacción entre el uso de suelo y de agua en el área peri-urbana de Cuauhtémoc, Chihuahua. Un estudio socioambiental en el norte de México Rolando Enrique Díaz Caravantes Luis Carlos Bravo Peña Luis Carlos Alatorre Cejudo Erick Sánchez Flores Ciencias de la Tierra Agua peri suelo urbano presión Por décadas, el crecimiento de las ciudades solamente se ha considerado en función de la disposición de suelo. En las ciudades del norte de México, usualmente ubicadas en regiones áridas o semiáridas, existe una alta dependencia del agua subterránea. Por esta razón, la pla- neación integral urbana está obligada no solo a considerar el área peri-urbana en función del suelo, sino también del agua subterránea. La transferencia de agua para uso urba- no produce severas alteraciones al medio natural como el agotamiento de acuíferos y cambios drásticos en el uso del suelo y la cubierta vegetal. En este documento se presenta un análisis geoespacial del uso del suelo y agua en el área peri-urbana de Ciudad Cuauhtémoc. Mediante modelación geográfica y percepción remota se evalúa la dinámica del uso y cobertura de suelo. Los resultados indican que los procesos de cambio de uso del suelo y cubierta vegetal ocurren en un contexto de alta competencia por el agua entre diversos usuarios. Este proceso usualmente no se considera en los estudios que miden la expansión espacial urbana, pero debe considerarse para comprender integralmente los efectos del crecimiento urbano en el territorio. 2014 artículo científico 0188-4611 https://www.redalyc.org/articulo.oa?id=56930750009 es http://www.redalyc.org/revista.oa?id=569 Investigaciones Geográficas (Mx) application/pdf Universidad Nacional Autónoma de México Investigaciones Geográficas (Mx) (México) Num.83

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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