Artículos (Geografía Física y Análisis Geográfico Regional)

URI permanente para esta colecciónhttps://hdl.handle.net/11441/11231

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Dinámica hidro-geomórfica de la laguna del Charco del Toro (complejo palustre del manto Eólico Litoral de El Abalario-Doñana): parque nacional de Doñana, Huelva
(2007) Borja Barrera, César; Díaz del Olmo, Fernando; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
Se analiza el modelo de funcionamiento hidro-geomorfológico de la laguna de Charco del Toro perteneciente al Complejo Palustre del Manto Eólico Litoral de El Abalario-Doñana (Huelva). Se definen los principales elementos estructurales y funcionales que componen el sistema y se establece un modelo teórico en el que se identifican dos escenarios opuestos para el ciclo anual: un máximo seco y un máximo húmedo. Se determina finalmente que la principal entrada de agua al humedal procede del acuífero.
Dinámica hidrogeomorfológica e impacto antrópico en la cuenca del arroyo del partido (NW del Parque Nacional de Doñana, Huelva, España). Evaluación de procesos actuales
(2009) Borja Barrera, César; Fernández Núñez, Miriam; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
Se estudia la dinámica hidrogeomorfológica y los efectos de la presión antrópica sobre los procesos actuales en la cuenca del arroyo del Partido, un pequeño colector mediterráneo que vierte sus aguas a las marismas del Guadalquivir (Parque Nacional de Doñana, Huelva, SW España). Este sistema fluvial se encuentra intensamente desnaturalizado, tanto estructural como funcionalmente, a causa de un intenso, variado y prolongado impacto humano sobre laderas y cauces. La entrada de material arenoso a las marismas de Doñana a través del arroyo del Partido es una de las principales preocupaciones para la conservación del Parque Nacional. La cuenca se ve afectada principalmente por impactos provenientes de los cambios de usos del suelo (eliminación de la cubierta vegetal originaria para la puesta en valor agrícola, sustitución de cultivos tradicionales por otros que conllevan técnicas de laboreo más agresivas, desmontes relacionados con el cultivo del eucalipto y la extracción de áridos, introducción de infraestructuras lineales poco permeables, etc.); mientras que los cauces, además de haber perdido la vegetación ribereña y estar intensamente ocupados, están siendo manejados inadecuadamente mediante la eliminación de los sedimentos de fondo, la destrucción de la morfología de las orillas y la desconexión entre el canal y la llanura aluvial (canalizaciones artificiales, rectificación mecánica de tramos, recrecimiento de orillas, vados, etc.). Todo lo cual ha hecho aumentar la capacidad erosiva del sistema fluvial durante las últimas décadas, habiéndose incrementado de manera alarmante los volúmenes de sedimentos depositados en las marismas del Guadalquivir.
Registro sedimentario y flujos hídricos en el teatro romano de Itálica: un estudio de geoarqueología aplicada
(2012) Borja Barrera, César; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
Se propone un modelo integral del funcionamiento hídrico del subsuelo del Teatro Romano de I tálica. A partir del material aportado por una zanja y 1 1 sondeos mecánicos a rotación (de 8 a 20 m de profundidad), seis de ellos equipados con piezómetros, se describe el relleno sedimentario (litofacies, contactos, cronologías, registro arqueológico…), y se identifican los distintos tipos de flujos hídricos. Se analiza tanto el origen del agua y su comportamiento a lo largo del hemiciclo primavera-verano de 201 1 , como su vinculación con el input pluviométrico registrado durante dicho periodo. El modelo define la implicación de tres tipos de flujos inundando el área de la orchestra de manera alternativa durante el ciclo anual.
The diatom flora in temporary ponds of Doñana National Park (southwest Spain): five new taxa
(2013) Borja Barrera, César; Díaz del Olmo, Fernando; Cámara Artigas, Rafael; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
Making the city uninhabitable. The impacts of touristification on the commercial environment
(Elsevier, 2025) Ruiz Romera, Andrea; Villar Lama, Arsenio; Puche Ruiz, María del Carmen; Fernández Tabales, Alfonso; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Agencia Estatal de Investigación (AEI); Ministerio de Ciencia e Innovación (MCIN); Unión Europea – NextGenerationEU; Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos
This article examines touristification's impact on the commercial environment of urban centres, specifically on the reorientation of this environment towards the interests of visitors to the detriment of those of locals. It introduces and tests a new methodology for measuring tourism-related commercial transformations, using Seville (Andalusia, Spain) as a case study. This methodology classifies commercial activities based on their greater or lesser connection to tourist consumption and it uses Google Street View to learn about the commercial environment of previous periods (2008 and 2019, in this research) as points of comparison to the current situation (2023). The results show the growing functional specialisation of tourist activities align with a broader trend observed in European historical centres, which are gradually becoming monocultural tourist destinations. The article's main contribution is a novel methodology that is replicable in other historical cities undergoing touristification.
Addressing acceleration areas for renewable energy development in the European Union (EU): A case study of mainland Portugal
(Elsevier, 2025) Díaz Cuevas, María del Pilar; Pérez Pérez, Belén; Silva Lopes, Hélder; Ferreira, Paula; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
The urgent need to accelerate the energy transition in the European Union has made spatial planning a key tool for effective and equitable deployment of renewable energy. Directive (EU) 2023/2413 requires Member States to designate “renewable acceleration areas” where renewable projects can be rapidly implemented with minimal environmental impact. However, the methodological basis for identifying such areas remains underdeveloped and uneven across countries. This paper proposes a methodological framework for identifying areas for wind energy implementation in mainland Portugal, with implications for other EU countries. Results show that, under the most restrictive scenario, wind energy development is incompatible or highly inadvisable in 95 % of the territory. Still, land remains available for installing 11,513 turbines, equating to 23,026 MW (assuming 2 MW per turbine). A less conservative interpretation of slope restrictions would allow for the installation of 1194 additional turbines. These findings highlight that particular attention should be paid to technical criteria, such as slope, in the same way that environmental protection and population-related factors are critically reviewed. It also emphasizes the need to assess “incompatible” areas more critically, categorizing them by the type and number of constraints. Proximity to energy demand is highlighted as a key factor for enhancing self-sufficiency and reducing externalities. Finally, it is recommended that suitability weightings be delegated to local planners, fostering flexibility and local empowerment with the involvement of experts familiar with the territory to be planned. This approach promotes balanced and flexible renewable energy zoning to the implementation of EU renewable energy targets and planning mandates.
Integración de datos poblacionales y catastrales en estructuras GRID primeros resultados para el espacio residencial en el litoral andaluz
(2017) Pérez Alcántara, Pedro; Ojeda Zújar, José; Díaz Cuevas, María del Pilar; Álvarez Francoso, José Ignacio; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER); Universidad de Sevilla. RNM177: Ordenación del Litoral y Tecnologías de Información Territorial
El objetivo de este trabajo consiste en mostrar la metodología y los primeros resultados de la integración de datos de población y del espacio residencial utilizando rejillas multiescalares –GRID‐, así como su potencialidad para el análisis y caracterización del espacio residencial en el litoral andaluz y su representación espacial. Para ello se presenta la metodología para la generación de estructuras GRID multiescalares a partir de la información sobre inmuebles residenciales proporcionada por la información catastral y de los datos sobre población (hogares) proporcionada por el Instituto de Estadística y Cartografía de Andalucía, así como los primeros resultados de su análisis integrado.
Efectos del cambio climático sobre las necesidades de climatización en Andalucía
(Editorial Universidad de Sevilla, 2017) Díaz Cuevas, María del Pilar; Marzo Artigas, Xavier; Pita López, María Fernanda; Limones Rodríguez, Natalia; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Ministerio de Economía y Competitividad (MINECO). España; European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER); Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos
El trabajo realiza el cálculo de los grados‐día calefacción y refrigeración para el momento actual y para tres treintenios del siglo XXI. A partir de ellos se obtienen los grados‐mes y los grados‐año calefacción y refrigeración. El balance entre ambos permite obtener las necesidades totales de climatización para el territorio andaluz. El resultado es un balance perjudicial en las necesidades de climatización, siendo además las áreas perjudicadas a finales de siglo las más numerosas. La verdadera dimensión del reto se alcanza a partir de la ponderación de los grados‐día climatización con la población, dado que la mayor parte de ésta se localiza en zonas donde las necesidades de climatización aumentarán. Sin duda este tema deberá ser uno de los protagonistas de la adaptación al cambio climático en Andalucía.
Characterization of tirsification soil weathering processes: The case of Los Lirios wetland, Guadalquivir basin, Seville, Spain
(2017) Borja Barrera, César; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
The “Andalusian Black Lands” (Chromatic Vertisols) are soils of great ecological and productive importance, emphasizes their fertility, however, their formation is still a reason for discussion. The main objective of this work was to analyze the most recent geomorphological and environmental evolution and the physical-chemical behavior of some parameters along its profile (Chromatic Vertisols). This study was conducted in Los Lirios wetland of the Guadalquivir basin (Seville, Spain). In addition, samples were obtained in an exploration of the bottom of this wetland for a study on pollen. Samples were obtained to a depth of 260 cm every 6 cm in the 120 cm upper soil layer. Physicochemical characteristics of samples were determined in the laboratory. A total number of 20 samples were evaluated, 11 of which correspond to the 65 cm of compact horizons submitted to tirsification. Radiocarbon dating (C14) was performed by Beta Analytic (Miami, Florida, USA). The results indicate the formation of a cumulative glacis and a subsequent environmental change towards more hydromorphic conditions might account for the surface and physical-chemical processes that characterize this alterological process, which generates soils of high ecological significance and agricultural productivity.
Twenty years of energy policy in Europe: achievement of targets and lessons for the future
(Springer, 2023-07-05) Díaz Cuevas, María del Pilar; González Relaño, Reyes Manuela; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Ministerio de Ciencia e Innovación (MICIN). España; Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos; Universidad de Sevilla. HUM136: Estudios geográficos andaluces
The different energy transition efforts in the EU-27 countries are analysed, paying special attention to the achievement of set energy targets and the real influence on energy dependence and GHG reduction. Various methodologies were used, ranging from construction of timelines to geo-statistical analysis using Geographic Information Systems (GIS) and the implementation of machine learning techniques and models, using R. The results show how different modifications of the energy saving and efficiency targets, along with lower power consumption due to the COVID pandemic, resulted in that although most of the EU-27 countries have achieved their saving and efficiency targets, this has not been reflected in a real reduction in consumption (compared to 1990 levels). In addition, the fulfilment of the objectives has not resulted in a reduction in energy dependence, generating a false sense of security and satisfaction in the fulfilment of the targets. Concerning GHGs, almost all EU-27 countries decrease their GHG emissions per capita compared to 2000 (with the exception of Lithuania, Bulgaria, Croatia and Latvia), with this decrease being mainly related to the fulfilment of renewable energy targets in transport. The conclusion highlights the need to make greater efforts to achieve saving and efficiency in the near future; otherwise, higher power consumption via renewable energy sources, while helping meet future increases in energy demand, will not impact the reduction in energy dependence compared to current levels.
A Study of Coastal Geoforms Cartographed Post-Discovery
(2023) Borja Barrera, César; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
Geomorphological studies are crucial for understanding the evolution of relief, and when associated with cartography, they enhance the interpretation and knowledge of environmental dynamics. Hence, historical cartography is essential for the documental rescue of landscapes, which, based on the mapped geoforms, enhances post-discovery studies for the state of Ceará, Brazil. Historically, this state was intermittently mapped in the sixteenth and seventeenth centuries but gained greater attention from Portugalin the eighteenth and nineteenth centuries after its separation from Pernambuco. Despite this, cartographic studies on coastal geoforms are not typical for the Ceará coast over a given period, highlighting the importance of this investigation. Therefore, this article aimed to study the environmental history of the coastal geoforms mapped on the extreme west coast of Ceará in the seventeenth and eighteenth centuries. This research had a qualitative and exploratory basis, with cartographic documental surveysonline and in loco, covering the municipalities of Jijoca de Jericoacoara, Camocim, and Barroquinha. Fifty maps of different origins were collected, three of which were used: a French sketch and two Portuguese maps. In the French material of 1615, geoforms in the Cape de la Tortue indicated the presence of a rocky island separated from the mainland. From the Portuguese map of 1629, a well-cut coastline was noted, identifying Buraco das Tartarugas, where there were two islands of different sizes. In the 1794 map, an island in the cove called Geri qua Coá was noted, differing in landscape from the previous ones, as it did not have tombolos connected to the continent. The cartographies presented particularities for revealing a possible advance in the local sealevel. Thus, it is possible to motivate future research in the area of historical cartography as a tool for the analysis of the paleogeographic evolution of the coastal zones of Ceará.
Energías renovables y modelo energético, una perspectiva desde la sostenibilidad
(2010) Domínguez Bravo, Javier; Lago Rodríguez, Carmen; Prades López, Ana; Díaz Cuevas, María del Pilar; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
En la actualidad, las energías renovables forman parte de las estrategias adoptadas para fomentar el cambio hacia un nuevo sistema energético, más eficiente y diversificado. Esta aportación analiza el papel de la energía eólica en este proceso de transición y como una mejor gestión del territorio, donde el uso de los Sistemas de Información Geográfica (SIG) constituye una herramienta fundamental, puede contribuir a acelerar la implantación de un nuevo modelo energético, caracterizado por la sostenibilidad.
Geografía de la energía solar en Andalucía (Sur de España): Nuevos datos y posibilidades de análisis
(2023-07-26) Díaz Cuevas, María del Pilar; Orozco Frutos, Gabriel; Prieto Campos, Antonio; Pérez Pérez, Belén; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
El presente trabajo realiza un análisis de la distribución territorial y la superficie ocupada por las centrales solares instaladas en Andalucía a fecha de 2019. Entre los principales resultados, destaca la diferencia en los patrones de consumo de suelo por tipo de central detectándose, entre otros aspectos, un mayor promedio de con-sumo de suelo de las centrales termosolares respecto al resto de centrales. Asimis-mo, se han identificado los municipios en los que la presencia de estas instalaciones ocupa hasta 15% de suelo. La información espacial generada, que se corresponde con la digitalización de los polígonos de centrales solares en Andalucía, completada con información alfanumérica sobre el tipo de central y la potencia instalada, se pone a disposición para su uso por parte de investigadores y académicos, así como para las autoridades responsables de la ordenación y gestión del territorio. El ac-ceso y la reutilización de la información se garantizan mediante un mapa web con servicios Web Feature Services (WFS) que permitirá, no sólo la geovisualización, sino también la descarga de datos. La disponibilidad de esta información consi-gue superar los análisis realizados hasta el momento, basados en una capa puntual procedente de la Agencia Andaluza de la Energía y distribuida por el Instituto de Estadística y Cartografía de Andalucía. Además, el mapa web permitirá, a usuarios no expertos en Sistemas de Información Geográfica, valorar la intensidad de la im-plantación y argumentar la preocupación social derivada de la instalación de este tipo de centrales sobre el territorio andaluz.
Characterizing collaborative mapping projects. A methodological framework for analyzing volunteered geographic information and spatial data infrastructure convergence
(2024) Pedregal Mateos, Belén; Orozco Frutos, Gabriel; Osorio Arjona, Joaquín; Díaz Cuevas, María del Pilar; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional
In this article, we compile and characterize a total of 43 collaborative web map projects by a set of parameters that enable the understanding and comparability of current and future projects. We then develop a comprehensive methodological framework to explore volunteered geographic information (VGI) and spatial data infrastructure (SDI) convergence based on this review. The main results show the dominance of citizen science projects, followed by initiatives promoting sustainability values, local development, and governance. Although values remain low, the potential to achieve convergence in VGI–SDI features is very high in citizen science projects, where the presence of experts and the funding of these projects by governments and decision-making entities enable quality standards in the collection and distribution of the contributed information. The work concludes by addressing two major challenges facing current VGI projects: firstly, accessing affordable technological solutions that allow the creation of collaborative web maps with SDI-like functions. Secondly, guaranteeing the project's sustainability and the preservation of the information gathered.
Methodology for selecting potential CO2 sinks in Macaronesia: The case of Gran Canaria
(Elsevier, 2024-12) Oladipo, Seun; Quesada Ruiz, Lorenzo Carlos; Caparrós Santiago, José Antonio; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Universidad de Sevilla. RNM177: Ordenación del Litoral y Tecnologías de Información Territorial
Carbon dioxide (CO2) accounts for 80% of the greenhouse gas emissions in the atmosphere. One of the several ways to mitigate CO2 emissions is through afforestation, which prevents catastrophic environmental consequences. The mean average emission per tourist in the Canary Islands on their way to the islands is 0.48 Tn. Like most urban cities, the island of Gran Canaria faces the problem of CO2 emissions due to anthropogenic and human activities. Vegetation coverage significantly influences the distribution of temperature. The correlation between Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI) of Gran Canaria, using satellite images from Landsat 8 and Sentinel-2, revealed a strong inverse relationship within all land use types, with an R2 value of 0.39. Land suitability analysis is a prerequisite for optimum utilization of available land resources. This study developed a suitability map for afforestation based on land use land cover, topographic, meteorologic, and socio-economic factors. Eight factors, including distance from settlements, land use, distance from the road, distance from water, elevation, slope, precipitation, and temperature, were employed according to previous studies, expert consultation, and land suitability mapping experience. After the criteria decision and data acquisition, maps of each criterion were created and transformed using the Suitability Modeler of ArcGIS Pro. The current study results show that 87% of the total area is suitable for afforestation and reforestation projects in Gran Canaria. Instead of using reactive methods to lessen the effects, the study recommends a proactive approach to climate adaptation through nature-based solutions. The study is part of an umbrella project of the Canary Islands and Spain in general, which considers the contributions of local and institutional stakeholders at different stages of the project. The next stage will be to design a forest afforestation and reforestation project, considering the kind of tree species needed, the methods required to implement it, and the management guidelines about the initial years of installation and growth of the new trees. The most crucial technical choice is which forest species to choose, as it will determine the success of the reforestation effort. The new revegetated space's ability to sequester carbon dioxide will primarily rely on the productivity of the land used for forest reforestation, the species chosen, and the introduced planting density.
A controversial legacy from the Romantic period. Al-Andalus echoes in films featuring tourists (1905-1975)
(CSIC, 2025-02-07) Fernández Tabales, Alfonso; Puche Ruiz, María del Carmen; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Ministerio de Ciencia e Innovación (MICIN). España; Agencia Estatal de Investigación. España; Unión Europea; Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos
The central theme of the article is the role of the image of Al-Andalus in shaping the archetypes of Spain and Andalusia, and more specifically in the tourist image of the latter. Thus, the main objective of this article is to show the historical process through which the idea of and the features associated with Al-Andalus have become one of the components of the tourist image of Spain and, fundamentally, of Andalusia throughout most of the 20th century. Furthermore, the secondary objectives are to analyse the intense debate, running since the beginning of the 19th century, about the image of Al-Andalus among Spanish intellectuals; and analyse the (re)production of “phantom image” linked to Al-Andalus in films with tourists, using a qualitative method of film image analysis that can be considered novel (Grounded Theory built through visual analysis with NVivo software).
Calibration of GEDI footprint aboveground biomass models in Mediterranean forests with NFI plots: A comparison of approaches
(Elsevier, 2025-02) Pascual, Adrián; May, Paul B; Cárdenas Martínez, Aarón; Guerra Hernández, Juan; Hunka, Neha; Bruening, Jamis M.; Healey, Sean P.; Armston, John D.; Dubayah, Ralph O.; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Universidad de Sevilla. RNM177: Ordenación del Litoral y Tecnologías de Información Territorial
Observations from the NASA Global Ecosystem Dynamics Investigation (GEDI) provide global information on forest structure and biomass. Footprint-level predictions of aboveground biomass density (AGBD) in the GEDI mission are based on training data sourced from sparsely distributed field plots coincident with airborne laser scanning surveys. National Forest Inventories (NFI) are rarely used to calibrate GEDI footprint biomass models because their sampling and positional accuracy prevent accurate colocation with GEDI or ALS. This mission can limit the harmonization of jurisdictional biomass estimates from NFI’s and GEDI; however, there are methods available to improve the colocation of NFI plots with GEDI footprints. Focusing on Mediterranean forests in Spain, we compared different approaches to the collocation of NFI and GEDI data: (i) simulated waveforms from ALS; (ii) nearest-neighbor on-orbit GEDI waveforms; and (iii) imputed GEDI waveforms imputed to NFI plot locations using a novel geostatistical method. These methods are potential solutions to improve the local performance of biomass models and address potential local systematic deviations between GEDI and NFI estimates. We assess the advantages and limitations of these methods to locally calibrate GEDI biomass models and quantify the impact of geolocation errors in reference NFI plot data. The new biomass models from each method were used to predict footprint level AGBD, which were then gridded for a province in the North-West of Spain. It was found that the imputation approach is not sensitive to common errors in NFI plot geolocation, but it can outperform ALS-based simulation in some cases, highlighting the benefit of information from multiple GEDI footprints proximate to NFI plots for improving biomass predictions. This research provides users with benchmark of available techniques to locally-calibrate GEDI footprint biomass models.
La energía eólica en Andalucía. Incidencia en espacios naturales, paisaje y territorio. ¿Hacia una generación distribuida?
(Consejo Superior de Investigaciones Científicas: Instituto de Economía y Geografía, 2024-12-30) Pérez-Pérez, Belén; Díaz Cuevas, María del Pilar; Márquez-Sobrino, Patricia; Camarillo Naranjo, Juan Mariano; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Ministerio de Ciencia, Innovación y Universidades (MICIU). España; Unión Europea; Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos; Universidad de Sevilla. RNM177: Ordenación del Litoral y Tecnologías de Información Territorial
En este trabajo se digitalizan, mediante el uso de Sistemas de Información Geográfica (SIG), los aerogeneradores instalados en Andalucía en 2019, poniéndolos a disposición de la comunidad científica y del público en general. A continuación, se realiza una revisión documental y cartográfica de los planes de ordenación de los recursos naturales de los espacios protegidos de la región (RENPA y Red Natura 2000), analizando de forma espacial las limitaciones establecidas para la implantación de parques eólicos, para valorar si las infraestructuras eólicas cumplen con las restricciones ambientales determinadas en estos instrumentos. También se analiza el grado de afección de las infraestructuras eólicas a las distintas categorías paisajísticas y a los municipios de Andalucía. Los resultados muestran que los parques eólicos cumplen con los requisitos de la planificación de los espacios RENPA y Red Natura 2000 en Andalucía, si bien hay 314 aerogeneradores que se localizan en zonas de máxima sensibilidad ambiental según la zonificación establecida por el MITECO. Estas infraestructuras no están equidistribuidas en la región, concentrándose especialmente en las categorías paisajísticas serranías y campiñas y en los municipios de menos de 5000 habitantes, que son los menos consuntivos de energía. Se constata la dualidad del modelo energético actual, que por un lado apuesta por una generación distribuida y por otro reproduce la concentración infraestructural del anterior modelo, poniendo unos territorios al servicio de otros, lo que genera la marginación de lo local a través de una injusticia distributiva, procedimental y retributiva.
Urban heat stress in the context of socioeconomic and environmental challenges: Heat risk analysis and online surveys in northwestern Portugal
(Elsevier, 2025) Lopes, Hélder S.; Silva, Pedro F.; Pinto, B. G.; Díaz Cuevas, María del Pilar; Ribeiro, V.; Remoaldo, P.; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Fundação para a Ciência e a Tecnologia (FCT); Universidad de Sevilla. HUM875: Estudios Territoriales y Turísticos
The issue of Urban Heat Stress (UHS) is becoming increasingly critical, with the rising frequency and intensity of heatwaves serving to exacerbate the problem. It is of the utmost importance to gain insight into the preparedness levels of urban populations if we are to foster resilient cities. However, research on the perceived impacts of heat among city dwellers remains limited, particularly studies that integrate both objective and subjective assessments. To address this gap in the literature, a survey was conducted in Porto and Braga, two major cities in northwestern Portugal, after categorising the risk levels associated with extreme heat. The objective of the survey was to identify personal characteristics associated with knowledge about heatwave protection and preferred communication channels for receiving related information. The online household survey yielded 613 responses, with 365 from Braga and 248 from Porto. It focused on how different socioeconomic groups are impacted by heat stress and the relationship between perceived heat impacts and indicators of exposure and vulnerability across the different groups. The findings indicated that demographic groups typically perceived as vulnerable exhibited the highest levels of exposure and susceptibility to heat stress. The study indicates that respondents identified health authorities and civil protection agents as principal sources of information during extreme heat events. This emphasises the significance of targeted communication strategies aimed at vulnerable groups through these channels to enhance their comprehension of heatwave protection measures. These insights can facilitate the enhancement of urban resilience and the reduction of the impact of UHS, underscoring the necessity for policymakers to adopt more refined strategies in managing heat stress in urban environments.
Analysis of landslide explicative factors and susceptibility mapping in an andean context: The case of Azuay province (Ecuador)
(Cell Prex, 2023-09-15) Cobos-Mora, Sandra Lucía; Rodríguez Galiano, Víctor Francisco; Lima, Aracely; Universidad de Sevilla. Departamento de Geografía Física y Análisis Geográfico Regional; Universidad Católica de Cuenca; Instituto de Investigación Geológico y Energético; Universidad de Sevilla. RNM177: Ordenación del Litoral y Tecnologías de Información Territorial
Landslides are one of the natural phenomena with more negative impacts on landscape, natural resources, and human health worldwide. Andean geomorphology, urbanization, poverty, and inequality make it more vulnerable to landslides. This research focuses on understanding explanatory landslide factors and promoting quantitative susceptibility mapping. Both tasks supply valuable knowledge for the Andean region, focusing on territorial planning and risk management support. This work addresses the following questions using the province of Azuay- Ecuador as a study area: (i) How do EFA and LR assess the significance of landslide occurrence factors? (ii) Which are the most significant landslide occurrence factors for susceptibility analysis in an Andean context? (iii) What is the landslide susceptibility map for the study area? The methodological framework uses quantitative techniques to describe landslide behavior. EFA and LR models are based on a historical inventory of 665 records. Both identified NDVI, NDWI, altitude, fault density, road density, and PC2 as the most significant factors. The latter factor represents the standard deviation, maximum value of precipitation, and rainfall in the wet season (January, February, and March). The EFA model was built from 7 latent factors, which explained 55% of the accumulated variance, with a medium item complexity of 1.5, a RMSR of 0.02, and a TLI of 0.89. This technique also identified TWI, fault distance, plane curvature, and road distance as important factors. LR’s model, with AIC of 964.63, residual deviance of 924.63, AUC of 0.92, accuracy of 0.84, and Kappa of 0.68, also shows statistical significance for slope, roads density, geology, and land cover factors. This research encompasses a time-series analysis of NDVI, NDWI, and precipitation, including vegetation and weather dynamism for landslide occurrence. Finally, this methodological framework replaces traditional qualitative models based on expert knowledge, for quantitative approaches for the study area and the Andean region.

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