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Publication
Cartografia preditiva da vegetação natural florestal potencial no perímetro florestal de Valhelhas e áreas adjacentes
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 5.64 MB | Adobe PDF |
Authors
Abstract(s)
Na área das freguesias de Valhelhas e Vale de Amoreira, respectivamente pertencentes
aos concelhos da Guarda e Manteigas, ambos do distrito da Guarda,
existe um grande potencial florestal, estando cerca de 40% desta área abrangida
pelo Perímetro Florestal de Valhelhas e 67% pela área do Parque Natural
da Serra da Estrela.
Este estudo teve como principal objectivo, a cartografia preditiva das comunidades
da vegetação natural florestal potencial, com recurso à utilização de
um Sistema de Informação Geográfica (SIG), com base no levantamento e
caracterização das respectivas Séries de Vegetação.
Foi executada a elaboração da Carta preditiva da Vegetação Natural Florestal
Potencial (VNFP), na área de estudo, de acordo com o modelo de vegetação
conhecido e descrito para Portugal Continental, fazendo uma relação unívoca,
entre as condições ecológicas para a sua ocorrência e a informação geográfica
disponível sobre as características de bioclima, litologia e solos, num contexto
biogeográfico.
Com base no cruzamento de toda esta informação, foi possível estabelecer a
relação entre a combinação das variáveis referidas e as Séries de Vegetação
consideradas como o conjunto de etapas de sucessão de comunidades de
vegetação.
A carta preditiva da VNFP foi validada com base no conhecimento nas séries
de vegetação existentes no território e verificou-se, que a aplicação do modelo
apresentou resultados interpretáveis, dentro do conceito de nicho ecológico.
Abstract In the area of the of Valhelhas and Vale de Amoreira parishes, respectively belonging to the municipalities of Guarda and Covilhã, both on Guarda district, there is a lot of potential, and about 40% of this area covered by Forest Perimeter of Valhelhas and 67% of the area of the Serra da Estrela Natural Park. This study had as its main objective, the predictive mapping of forest potential natural vegetation communities, with recourse to the use of a geographic information system (GIS), based on the survey and characterization of the respective Vegetation Series. So ran the drafting of the predictive Map of Forestry Potential Natural Vegetation (VNFP) in the study area, according to the model of vegetation known and described for mainland Portugal, making an unambiguous relationship crossing the spatial information contained in themes about the characteristics of bioclimate, lithology and soils in a biogeographical context. Based on the crossing of all this information, it was possible to establish the relationship between the combination of the variables mentioned and the Vegetation Series considered as the set of stages of succession of vegetation communities. The VNFP predictive map was validated based on knowledge in the existing vegetation series in the territory and it was found that the application of the model presented interpretable results, within the concept of the ecological niche.
Abstract In the area of the of Valhelhas and Vale de Amoreira parishes, respectively belonging to the municipalities of Guarda and Covilhã, both on Guarda district, there is a lot of potential, and about 40% of this area covered by Forest Perimeter of Valhelhas and 67% of the area of the Serra da Estrela Natural Park. This study had as its main objective, the predictive mapping of forest potential natural vegetation communities, with recourse to the use of a geographic information system (GIS), based on the survey and characterization of the respective Vegetation Series. So ran the drafting of the predictive Map of Forestry Potential Natural Vegetation (VNFP) in the study area, according to the model of vegetation known and described for mainland Portugal, making an unambiguous relationship crossing the spatial information contained in themes about the characteristics of bioclimate, lithology and soils in a biogeographical context. Based on the crossing of all this information, it was possible to establish the relationship between the combination of the variables mentioned and the Vegetation Series considered as the set of stages of succession of vegetation communities. The VNFP predictive map was validated based on knowledge in the existing vegetation series in the territory and it was found that the application of the model presented interpretable results, within the concept of the ecological niche.
Description
Trabalho apresentado à escola Superior Agrária do Instituto Politécnico de Castelo Branco para obtenção do Grau de Mestre em Sistemas de Informação Geográfica - recursos Florestais e Ambientais.
Keywords
Cartografia preditiva Geoprocessamento Modelo Séries de vegetação Vegetação natural florestal potencial Predictive mapping Geoprocessing Vegetation series Forestry potential natural vegetation