Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 16.
  1. Library Resource

    Land Use Policy Volume 97

    Publication évaluée par des pairs
    septembre, 2020
    Espagne, États-Unis d'Amérique

    The design of efficient Green Infrastructure —GI— systems is a key issue to achieve sustainable development city planning goals in the twenty-first century. This study’s main contribution is the identification of potential GI elements to better align the environmental, social and economic perspectives in the GI design by including information about the use, activities, preferences and presence of people. To achieve this, user generated content from Location Based Social Network —LBSN— Foursquare is used as a complementary data source.

  2. Library Resource

    Volume 9 Issue 12

    Publication évaluée par des pairs
    décembre, 2020
    Espagne, Mexique, États-Unis d'Amérique

    The ejido is an institution of communal land tenure and governance administered by the Mexican government. This paper assesses the current visual appearance of landscapes and implicit land use in ejidal lands on the periphery of Guadalajara, Mexico, using Google Street View (GSV) images tagged for signs of urban distress. Distressed landscapes are associated with the temporal process of urban expansion—newer settlements tend to be more visibly impoverished.

  3. Library Resource

    Volume 7 Issue 3

    Publication évaluée par des pairs
    septembre, 2018
    Portugal, Espagne

    This work aims to provide a comprehensive, wall-to-wall analysis of land use/cover changes in the continental areas of Portugal and Spain between 1990 and 2012. This overall objective is developed into two main research questions: (1) Whether differences between the extent and prevalence of changes exist between both countries and (2) which are the hotspots of change (areas where a given land use/cover transition dominates the landscape) in each country.

  4. Library Resource
    Articles et Livres
    janvier, 2013
    Espagne

    No existe una definición comúnmente aceptada de dispersión urbana (urban sprawl), de modo que la investigación aplicada ha trabajado con diferentes indicadores que pretenden a su vez capturar los distintos significados con que se ha dotado al término. En este trabajo se mide cómo ha evolucionado la dispersión de la población y del empleo de la Región Metropolitana de Barcelona (RMB) entre 1986 y 2001. Las dimensiones exploradas se dividen en dos grupos: i) forma urbana (desconcentración, baja densidad y discontinuidad) y ii) estructura urbana.

  5. Library Resource
    Articles et Livres
    décembre, 2014
    Espagne, Europe

    Knowledge of the factors determining species distributions is essential for developing conservation strategies. Sandgrouse Pterocles alchata and P. orientalis are threatened in Spain, the stronghold of European populations. Spatial modelling was used to: (1) assess the relative importance of abiotic, anthropogenic and geographical factors in the distribution of both sandgrouse species, (2) determine the most important anthropogenic predictors for each species occurrence, and (3) identify areas where conservation efforts should be prioritized.

  6. Library Resource
    Articles et Livres
    décembre, 2016
    Espagne

    Urban sprawl along the Mediterranean coast is characterized by single-family houses and domestic gardens. Many new residences are secondary homes for socio-demographically diverse tourists. We explore the differences between the residence types in terms of their garden structures and plant compositions using socioeconomic and legacy attributes. Outdoor areas of 245 primary and secondary homes were investigated to determine plant compositions, land cover and household characteristics. Then, the outdoor land cover was compared between the two residence types.

  7. Library Resource
    Articles et Livres
    décembre, 2016
    Espagne

    CONTEXT: The role of agricultural landscapes in biodiversity conservation is an emerging topic in a world experiencing a worrying decrease of species richness. Farm systems may either decrease or increase biological diversity, depending on land-use intensities and management. OBJECTIVES: We present an intermediate disturbance-complexity model (IDC) of cultural landscapes aimed at assessing how different levels of anthropogenic disturbance on ecosystems affect the capacity to host biodiversity depending on the land matrix heterogeneity.

  8. Library Resource
    Articles et Livres
    décembre, 2015
    Espagne, Europe

    Maytenus senegalensis subsp. europaea communities are unique vegetal formations in Europe. In fact, they are considered Priority Habitat by Directive 92/43/EEC. These are ecologically valuable plant communities found in the southeast of Spain. By combining modeling methods of environmental variables, historical photo-interpretation, and fieldwork, a chronosequence of the evolution of their extent of occurrence (EOO) has been reconstructed in 1957 and 2011. Results showed a strong regression range of M. senegalensis subsp. europaea populations.

  9. Library Resource
    Articles et Livres
    décembre, 2013
    Espagne

    The United Nations Convention to Combat Desertification (UNCCD) does not distinguish between natural and human drivers, and between active and inherited desertification. Partly as a result of these ambiguities the UNCCD has attracted a low level of international attention. As the Spanish case study shows, this vagueness hinders the implementation of effective strategies to combat this global challenge.

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