Instituto da Conservação da Natureza e das Florestas, IP
Av. da República, 16-16B, 1069-040 LISBOA
1- The intervention executed on the land allowed to establish a protection break strip along the middle of the property.
2- The fire behavior models changed significantly.
3- The building plans did fit in the areas of lesser forest fire fuels combustion risk.
4- The hazard was calculated based on a forest patch that has changed significantly.
5- There is a water point of significant dimensions on the neighbor’s land.
6- The road network in the property allows accessibility from the main entrance until the lowest point in it.
7- There are conditions to create turnaround points and guarantee the circulation without problems.
8- It’s possible to have two car access entrances on the lateral borders of the property, which can be used as alternative exits.
9- The water network conditions of the plans, should be registered.
(From the Architecture Project Memorandum delivered in the Municipal City Hall)
The definition of buildings’ implementations present in the Preliminary Information Request (Pedido de Informação Prévio – PIP) VO 38/2014, was accompanied by a topographic and forestal survey started by Filipe Catry (Forest Engineer, PhD) and Pedro Marrecas (Forest Engineer), later prepared and presented by PERTIS, Consultants Engineers, which established the bases for the recognition of existing native and exotic floral species, the areas to preserve and recover with its natural values to protect, with those areas that are most suitable for the implementation of the buildings.
The construction sites are located mainly in the areas previously cleared from eucalyptus (Ec) and eucalyptus-pine (EcPb). As indicated in the study ‘Characterization and Proposal of Forest Management’, the land was subsequently cleaned in these areas and the remaining property. This work allowed to verify even more accurately the implementation locations for the constructions, with slight changes to those initially foreseen. Although these changes didn’t alter the principle of the locations, they permitted to adapt the construction topography, respecting the species to preserve better.
From the Mafra Municipality land cover study on determining the forest fire hazard risk, most of the property located in ‘Carrasqueira de Cima’ – parish of Ericeira, County of Mafra – is comprised by the Land Cover 313 – Mixed Forests of conifers and deciduous in Corine Land Cover – a patch with around 17 hectares. To this patch, two types of combustible models of Rothermel are associated, models 5 and 9. These are the models that allow us to describe the behavior of fire in case of forest fires.
The intervention done on the vegetation covering the land, altered substantially the hazard conditions as can be confirmed in – http://sumedharama.pt/terreno/. In terms of composition, it was privileged the selection of maritime-pine in the highest areas of the land and all the eucalyptus was cleared, thus avoiding excessive densities. In the most humid lower zones, the cork-oak was selected, having been cleared all the other species competing for the same space, including pine and eucalyptus.