Conjunctural Building Area Interface Charter 2021

The Conjunctural Building Area Interface Charter 2021 is a product of the Soil Occupation Monitoring System (SMOS), an innovative initiative, designed and developed by the Directorate-General of the Territory, with the aim of continuously producing cartographic information on land use and occupation. SMOS uses the latest developments in space technologies and Artificial Intelligence to create products with more detail, quality, speed and made available with open data policy. All products can be viewed in vismos. https://smos.dgterritorio.gov.pt/vi-smos This product is experimental and represents the segments that integrate the perimeter (interface) of the Charter of Building Areas (2018), classified according to its proximity to fuel stains and the area of such stains (2021). The fuel cover was identified from the Conjuntural Soil Occupation Cartography (COSc2021), which is a raster product with pixels of 10 meters. The spatial analysis developed on predefined COSC classes (isolated or grouped) enabled the identification of four types/categories of fuel cover: The Densa Forest; Open forest; Matos; Spontaneous herbaceous vegetation. After subdivision of the perimeter of each area built 2018 into segments of regular size (25 meters), each segment was classified according to its proximity to fuel stains and the area of such stains, in one of the following types of conjunctural interface: • Direct: segments that have a fuel-covered stain(s) of 0.1 ha or more at a distance of 10 metres or less. Indirect 1: segments that are not directly interfaced and have a fuel-covered stain(s) of 0.1 ha or more at a distance of more than 10 metres but not exceeding 100 metres. Indirect 2: segments that are neither direct nor indirect interface 1 and have a fuel-covered stain(s) of 1 ha or more at a distance of more than 100 metres but not more than 500 metres. * Null and void: remaining segments (plus 100 meters of fuel stains with ≥ 0.1 ha and more than 500 meters of fuel stains ≥ 1 ha). DGT currently produces two types of Built Area Interface Cards: the structural and the conjunctural. In addition to small methodological differences in their production, these two charts differ in the source used to identify the fuel cover. In the structural chart the fuel cover is identified through the Land Occupation Use Chart (COS) and in the conjunctural chart the fuel covered is identified through the COSC. These two maps have different minimum cartographic units (UMCs), i.e. the COS has a UMC of 1 ha and the COSC has pixels of 10 m, but the main difference is due to the fact that COS is a land use and occupation cartography and soil occupation COSC. For example, an area of forest use in the SOC can be classified in COSC as Matos or spontaneous Herbaceous Vegetation if in that year it is temporarily deforested. This product was developed by DGT under the POSEUR-02-1810-FC-000504 project. Additional information about this dataset and its attributes is available at: https://geo2.dgterritorio.gov.pt/info/CartografiaAreasEdificadas2021_DGT_POSEUR_Visualizador_junho2022.pdf If you are not familiar with the provision of spatial data through visualisation services (e.g., WMS) and download can be found in the Support Guides on the open data page of DGT (https://www.dgterritorio.gov.pt/dados-abertos).