Browsing by Author "Velarde, Jacinto Garrido"
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- Analysis of the Settlement Systems of the Population Located in the International Basin of the River GuadianaPublication . Aliseda, Julián Mora; Mora, Consuelo; Velarde, Jacinto GarridoThe knowledge of effective and the characteristics of the population has been one of the objectives pursued by states since ancient times to today, due to military and economic interests. In this sense, this study is inserted in the studies that analyse the changes that have taken place in the settlement system of the population and its effect on the spatial organization of the urban network. The objective of this research is to study the distribution of the population of the municipalities located in the international basin of the River Guadiana.
- Dinámicas socio-espaciales y previsiones demográficas en la cuenca Internacional del río DueroPublication . Aliseda, Julián Mora; Velarde, Jacinto Garrido; González, Manuel DíazEn las últimas décadas se ha producido un acelerado proceso de urbanización en la escala global, dando lugar a una heterogénea distribución de la población sobre el espacio geográfico y propiciando desequilibrios territoriales. La intensidad espacial y la rapidez de los cambios recientes en España y Portugal ofrecen un ejemplo paradigmático del cambio rápido hacia un nuevo sistema de relaciones rurales urbanas de la cuenca internacional del río Duero. El objetivo de esta investigación es analizar las mudanzas acaecidas en la distribución de la población de los municipios ubicados en dicha cuenca. Se trata de una investigación de tipo cuantitativa, en su instrumento metodológico, a través de la utilización de datos censales de población considerando el período 2001-2011. En el estudio de los municipios localizados en la cuenca internacional del río Duero se aplicarán categorías de tamaño de población. Asimismo, se examinará la estructura de la población actual y se realizará un modelo predictivo de la evolución de la población con el fin de podernos anticipar racionalmente a las tendencias futuras de las poblaciones analizadas.
- Estimation of Optical Porosity or Canopy Structure of Two Species of Tree with Hemispherical and Vertical ImagesPublication . Velarde, Jacinto Garrido; Blanco, Julio Hernández; Aliseda, Julián MoraMeaningful, reliable and fast estimates of woodland canopy are essential to the characterization of forest ecosystems. In this document, the accuracy of the technology of hemispherical digital photography and its comparison with a measuring proposal via vertically-arranged photography is evaluated for the estimation of canopy porosity in two deciduous tree species: oak and Sweet chestnut. Complementarily, estimative models are proposed of porosity capacity of the species under study, in function of allometric variables of statistical weight in tree growth: canopy diameter and DBH (diameter breast height). For the execution of this study an experimental area of rural character was chosen in the Ambroz Valley, in Cáceres Province (Spain), where Quercus pyrenaica and Castanea sativa were selected as the most representative species. The data was gathered in the season with greatest foliage development for both species: the summer. The average tree canopy porosity obtained via the two methods under evaluation is very similar when compared through regression analysis (R²=0,919 for Sweet chestnut; R²=0,952 for oak). Therefore both methods would be eligible for measuring OP of the species proposed for this study. The equivalence of measurements in vertical perspective as opposed to hemispherical makes viable the use of porosity percentages as indicators of what the average observer is able to visualize through the canopy. Starting from these preliminary conclusions, it would be feasible to develop a quantification tool for degrees of filtering with application to landscape planning and reduction of visual impact. Complementary research on other species could be recommendable in order to standardize and validate this proposal.
- Gobernanza de los recursos hidricos transfronterizos: Una propuestaPublication . Aliseda, Julián Mora; Velarde, Jacinto Garrido; Aliseda, Consuelo MoraExisten numerosos precedentes de aplicación de la planificación estratégica y de los sistemas de planificación integrada a distintos ámbitos de la gestión de los recursos naturales. El antecedente más claro y evidente es la Estrategia Territorial Europea, consistente en un ambicioso proyecto y esfuerzo de homogeneización terminológica y de convención técnica en materia de ordenación territorial y urbana en el que se han involucrado todos los países de la Unión Europea. El modelo de la Estrategia Territorial Europea es sin duda un modelo muy válido, tanto como metodología de trabajo como de sistema de concertación de la clase investigadora y la clase política de los países implicados. En lo que toca específicamente a la planificación estratégica de los recursos hídricos y de la gestión del agua, evidentemente las experiencias existentes son escasas. Debe tenerse presente que hasta la fecha la gestión de los recursos hídricos y de las cuencas hidrográficas ha tenido un carácter muy sectorial y ha estado muy restringida al ámbito de actuación de las respectivas instituciones gubernamentales responsables de la gestión, esto es, las Confederaciones Hidrográficas en el caso español y el Instituto Nacional del Agua (INAG) en el caso portugués. Por ello, el presente estudio realiza un análisis de la Estrategia Territorial Europea como punto de partida para establecer la cooperación transfronteriza Hispano-Lusa en la gestión de los recursos hídricos, estableciendo tras dicho análisis las propuestas metodológicas a seguir para abordar y concretar dicha cooperación fronteriza transnacional, en pro de la gestión de los recursos hídricos de la Península Ibérica.
- Governance: Territorial and Urban Planning. Case Study of Mérida (Spain)Publication . Aliseda, Julián Mora; Velarde, Jacinto Garrido; Cabrera, Enrique PozoThe purpose of any territorial strategic planning process, in its urban or environmental component, is to influence the future dynamics of the city and its area of influence by making coordinated and consensual decisions, that will be carried out by political, economic and social agents. Strategic planning is the key to achieving a 21st century city, according to the Challenges of the New Urban Agenda (III Habitat Conference of the United Nations, Quito, 2016). These challenges are to plan a city with this multiple approach: Compact, Inclusive, Connected and Resilient. In this sense, this study makes a methodological proposal for the development of a Strategic Plan as an instrument capable of merging and articulating the physical planning of the land (urban, urbanizable, rustic and protected), with the socio-economic strategies of the city, so that the development was matched to the requirements and needs of each moment, given the flexibility of this tool to design new scenarios, such as the selected case of Mérida, autonomous capital of Extremadura (Spain).
- Methods of quantifying the visual filtering of vegetation to minimize the impact of buildings on the landscapePublication . Velarde, Jacinto Garrido; Blanco, Julio Hernández; Aliseda, Julián MoraVegetation is used by landscape planners and designers to reduce the visual impact of buildings. The choice of the species to be used depends on the characteristics of the crown canopy filtering. Nevertheless, the information on crown canopy filtering is scarce. This work examines the degree of filtering in canopy architecture of Quercus pyrenaica. The district of the Ambroz Valley, in Cáceres Province was chosen as the experimental area for the purposes of this research, and here Quercus pyrenaica were chosen as the most representative species. Two methods were selected for this study: hemispheric photography and vertical photography. All data was gathered during the summer as this is when the canopy of the species analyzed reaches its maximum leaf area index. The main aim of this research is to compare the hemispherical photographic method for calculating the amount of light that passes through the canopy, with that of vertical photography to obtain filtering percentages in plants.
- Population Analysis of the Spanish-Portuguese Basin of the River TajoPublication . Aliseda, Julián Mora; Velarde, Jacinto Garrido; González, Manuel DíazOver the last few decades, distribution and redistribution of the population within the territory has gained in importance as a subject of social interest, both regionally and nationally. This study is part of research which analyzes changes in how the population is settled and its effect on spatial organization of the urban network. The aim of this research is to analyze the changes in the population distribution of the municipalities located in the international basin of the River Tajo. This is an investigation of a quantitative nature, in its methodological approach, through the use of population census data covering the period 2001-2011. In the study of the municipalities in the international basin of the River Tajo, population size categories are applied. Likewise, the structure of the current population is examined and a predictive model of the population evolution will be performed to enable us to anticipate rationally future trends in the populations analyzed.
- A proposal of resilience indicators for Monfragüe National ParkPublication . Velarde, Jacinto Garrido; Aliseda, Julián MoraNatural spaces represent environmental systems with a double function, both social and ecological, where environmental sustainability conditions can be assessed. One of the most important features of the socio-ecological systems is called resilience, which is related to the magnitude of the forces or pressures that a system can absorb remaining in a stable state and thus being able to self-organize and improve their ability to learn and adapt. The main objective of this study is to design and propose a resilience indicator system for Monfragüe National Park, in response to the need for a set of enough data to monitoring the short, medium and long term persistence of protected area against changes or environmental impacts, social and economic environment of the Park. We expect that, by laying down the objectives, it will be possible for the relevant authorities to adopt strategies of sustainable management. The resilience indicators systems proposed in this study for Monfragüe National Park, could be recommended for subsequent application of resilience indicators in other National Parks.