20 documents found, page 1 of 2

Propriedades da geoinformação de uso e ocupação do solo na modelação e análise ...

Identificação das forças motrizes das alterações do uso e ocupação do solo em P...

Post-wildfires effects on physicochemical properties of surface water: the case...

In Portugal, wildfires are frequent and sometimes catastrophic and responsible for high damages and human losses. They have been especially intense in the Center Region of Portugal, where the Zêzere watershed is located. This research presents an analysis of the temporal and spatial occurrence of these events within the watershed. It was observed that the extent of the burned areas has a high annual variation a...

Effects of different land use and land cover data on the landslide susceptibili...

This work evaluates the influence of land use and land cover (LUC) data with different properties on the landslide susceptibility zonation of the road network in the Zêzere watershed (Portugal). The information value method was used to assess the landslide susceptibility using two models: one including detailed LUC data (the Portuguese Land Cover Map – COS) and the other including more generalized LUC data (the...

Perfis municipais de risco a cheias e inundações para aplicação ao ordenamento ...

Modelling the land use and land cover changes in Portugal: a multi-scale and mu...

Portuguese territory has experienced relevant land use and land cover changes (LUCC) in recent decades. The revision of existing land use and land cover (LUC) datasets and the production of new datasets have allowed us to better understand LUCC over time. This study furthers that analysis by using the most recent LUC datasets, which cover the entirety of the Portuguese continental area from 1990 to 2012 and pre...

The effects of land use and land cover geoinformation raster generalization in ...

Multiple land use and land cover (LUC) datasets are available for the analysis of LUC changes (LUCC) in distinct territories. Sometimes, different LUCC results are produced to characterize these changes for the same territory and the same period. These differences reflect: (1) The different properties of LUC geoinformation (GI) used in the LUCC assessment, and (2) different criteria used for vector-to-raster co...

Assessment of the recurrence interval of wildfires in mainland Portugal and the...

Wildfires are responsible for major land use and land cover (LUC) changes. These events are frequent and catastrophic in Portugal and are responsible for great damage and loss of human life. In this study, a map to assess the probability of wildfire occurrence (PWO) in mainland Portugal was created for the period 1975-2017 (first half of 2017). The PWO was obtained by the superimposition of all layers by adding...

Construction of a National Landslide Susceptibility Map for Portugal

Identificação das forças motrizes das alterações do uso e ocupação do solo em P...

Em Portugal continental ocorreram grandes transições de uso e ocupação do solo (LUCC) nos últimos anos, nomeadamente ao longo das áreas costeiras onde a artificialização do solo aumentou significativamente, mas também pela elevada redução da floresta. A avaliação das LUCC é fundamental para a identificação das dinâmicas territoriais, aplicação de novos investimentos, definição de políticas de preservação: na fl...