O SIG desempenha um papel fundamental no desenvolvimento dos Sistemas de Apoio à Decisão para a G... more O SIG desempenha um papel fundamental no desenvolvimento dos Sistemas de Apoio à Decisão para a Gestão dos Recursos Hídricos. O Sistema de Apoio à Decisão apoia-se no SIG para a constituição de uma base da informação georeferenciada com elementos inter-relacionados que visam dotar este DSS de algumas funcionalidades dos sistemas de informação (recolha, entrada, armazenamento, tratamento, análise e visualização de informação). Na Gestão dos Recursos Hídricos a componente informação deve ser apresentada de forma (geo)gráfica, numérica ou alfanumérica, de modo a permitir a criação de associações ou relações de carácter espacial significativas para quem tenha de decidir. Este SIG permite desenvolver um conjunto de elementos espacialmente referenciados que se relacionam para a identificação/caracterização de uma unidade (sub-bacia do Rio Caia), que se insere num sistema mais amplo (bacia do Rio Guadiana). Uma das componentes essenciais deste DSS é a abordagem dos principais problemas dos...
This paper aims at presenting the dynamics of land cover changes in coastal areas. These dynamics... more This paper aims at presenting the dynamics of land cover changes in coastal areas. These dynamics were identified, Coastal Alentejo (Portugal), by the application of an integrated methodology that associated the land cover data with the socioeconomic data. The use of Geographic Information Systems made possible the association of land cover data and socioeconomic data using different levels of analysis. Being land cover and land use changes one of the main issues integrating the large debate on sustainable development, its analysis demand clearly an integration of spatial / landscape data with the socioeconomic data, which has been recently widely recognised. The question is how this integration is possible, and how can it best being achieved to understand the change. Moreover, the land use changes studies must be a contextualised analysis centred in the individual inside the context where he acts. This departing point assumes that the individual induces land use changes but he also reflects these changes, which were made by him or by other agents that intervene, directly or indirectly, in the land use. Thus we must consider and analyse the impact of external driving forces such as the national and international policies and regulations, being necessary, therefore, an effort to make this kind of analysis at Regional, Local and Individual Level. The coastal areas are special focus given the increasing importance that they had assumed in the global frame of the present economic development. The number and diversity of agents that are searching for space in coastal areas increases the needs for an integrated management in a way to minimise the negative impacts of the increasing number of activities conflicting in these areas. The nature and distribution of human activities on coastal areas result from the action of a range of driving forces-demographic, institutional, commercial and market, cultural and technological. The impact of these forces explains the land use changes and the way in which the coastal resources are affected.
This paper intends to present and discuss the causes and consequences of the land use changes occ... more This paper intends to present and discuss the causes and consequences of the land use changes occurring in the area, based in the information from a case-study located in the municipality of Alcoutim. This study has been developed under an European research project regarding Belgium, Denmark and Portugal,“Monitoring and Managing Changes in Rural Marginal Areas: a comparative research”.
The importance of Global Change research and Land-Use and Land-Cover Change (LUCC) studies reflec... more The importance of Global Change research and Land-Use and Land-Cover Change (LUCC) studies reflects concerns about the need to understand the influence of human activities on the biogeochemical foundation of the biosphere as well as their impacts on climate change. Nowadays, since 1995, it is assumed the importance of LUCC as a substantial agent of change with great significance in climate change, loss of biodiversity, use of natural resources, human health and quality of life. Therefore we must perceive the influences of land-use and land-cover changes as a significant driving-force for Global Change. LUCC is an interdisciplinary project designed to improve the understanding and projections of the dynamics of land-use and land-cover change as inputs to and consequences of global environmental change and sustainable development. The scientific framework of this core project of IGBP is defined by major strategies reflected in three interlocking research foci (Table ): Table 1 -Research Foci of LUCC Focus 1 Land Use Dynamics Comparative Analysis Focus 2 Land Cover Changes Direct Observations and diagnostic models Focus 3 Integrated Models Regional and Global Models Activities 1. Land use decision making 2. Local land use and regional-global levels Activities 1. Hot-spots and critical areas 2. Socialising the pixel 3. Patterns to processes Activities 1. Modelling review 2. Scale issues 3. Urban / Rural and water issues
O SIG desempenha um papel fundamental no desenvolvimento dos Sistemas de Apoio à Decisão para a G... more O SIG desempenha um papel fundamental no desenvolvimento dos Sistemas de Apoio à Decisão para a Gestão dos Recursos Hídricos. O Sistema de Apoio à Decisão apoia-se no SIG para a constituição de uma base da informação georeferenciada com elementos inter-relacionados que visam dotar este DSS de algumas funcionalidades dos sistemas de informação (recolha, entrada, armazenamento, tratamento, análise e visualização de informação). Na Gestão dos Recursos Hídricos a componente informação deve ser apresentada de forma (geo)gráfica, numérica ou alfanumérica, de modo a permitir a criação de associações ou relações de carácter espacial significativas para quem tenha de decidir. Este SIG permite desenvolver um conjunto de elementos espacialmente referenciados que se relacionam para a identificação/caracterização de uma unidade (sub-bacia do Rio Caia), que se insere num sistema mais amplo (bacia do Rio Guadiana). Uma das componentes essenciais deste DSS é a abordagem dos principais problemas dos...
This paper aims at presenting the dynamics of land cover changes in coastal areas. These dynamics... more This paper aims at presenting the dynamics of land cover changes in coastal areas. These dynamics were identified, Coastal Alentejo (Portugal), by the application of an integrated methodology that associated the land cover data with the socioeconomic data. The use of Geographic Information Systems made possible the association of land cover data and socioeconomic data using different levels of analysis. Being land cover and land use changes one of the main issues integrating the large debate on sustainable development, its analysis demand clearly an integration of spatial / landscape data with the socioeconomic data, which has been recently widely recognised. The question is how this integration is possible, and how can it best being achieved to understand the change. Moreover, the land use changes studies must be a contextualised analysis centred in the individual inside the context where he acts. This departing point assumes that the individual induces land use changes but he also reflects these changes, which were made by him or by other agents that intervene, directly or indirectly, in the land use. Thus we must consider and analyse the impact of external driving forces such as the national and international policies and regulations, being necessary, therefore, an effort to make this kind of analysis at Regional, Local and Individual Level. The coastal areas are special focus given the increasing importance that they had assumed in the global frame of the present economic development. The number and diversity of agents that are searching for space in coastal areas increases the needs for an integrated management in a way to minimise the negative impacts of the increasing number of activities conflicting in these areas. The nature and distribution of human activities on coastal areas result from the action of a range of driving forces-demographic, institutional, commercial and market, cultural and technological. The impact of these forces explains the land use changes and the way in which the coastal resources are affected.
This paper intends to present and discuss the causes and consequences of the land use changes occ... more This paper intends to present and discuss the causes and consequences of the land use changes occurring in the area, based in the information from a case-study located in the municipality of Alcoutim. This study has been developed under an European research project regarding Belgium, Denmark and Portugal,“Monitoring and Managing Changes in Rural Marginal Areas: a comparative research”.
The importance of Global Change research and Land-Use and Land-Cover Change (LUCC) studies reflec... more The importance of Global Change research and Land-Use and Land-Cover Change (LUCC) studies reflects concerns about the need to understand the influence of human activities on the biogeochemical foundation of the biosphere as well as their impacts on climate change. Nowadays, since 1995, it is assumed the importance of LUCC as a substantial agent of change with great significance in climate change, loss of biodiversity, use of natural resources, human health and quality of life. Therefore we must perceive the influences of land-use and land-cover changes as a significant driving-force for Global Change. LUCC is an interdisciplinary project designed to improve the understanding and projections of the dynamics of land-use and land-cover change as inputs to and consequences of global environmental change and sustainable development. The scientific framework of this core project of IGBP is defined by major strategies reflected in three interlocking research foci (Table ): Table 1 -Research Foci of LUCC Focus 1 Land Use Dynamics Comparative Analysis Focus 2 Land Cover Changes Direct Observations and diagnostic models Focus 3 Integrated Models Regional and Global Models Activities 1. Land use decision making 2. Local land use and regional-global levels Activities 1. Hot-spots and critical areas 2. Socialising the pixel 3. Patterns to processes Activities 1. Modelling review 2. Scale issues 3. Urban / Rural and water issues
Uploads
Papers by Enrique Peña