Encontrados 64 documentos, a visualizar página 1 de 7
A decision support system for a multi stakeholder's decision process in a portu...
Garcia-Gonzalo, J.; Palma, J.H.N.; Freire, J.P.A.; Tomé, Margarida; Mateus, R.; Rodriguez, L.C.E.; Bushenkov, V.; Borges, J.G.Aim of study: In this paper, we present a decision support system (DSS) to support decision making where different stakeholders have to generate landscape and forest level strategic plans. We further present an interactive approach that may take advantage of a posteriori preference modelling (i.e. Pareto frontier technique) to facilitate the specification of the levels of achievement of various objectives. Area...
Modelo para a predição de indicadores de gestão florestal sustentável em povoam...
Nunes, Luís; Tomé, José; Tomé, MargaridaO Pinheiro bravo (Pinus pinaster Ait.) é a espécie resinosa autóctone mais representativa em Portugal continental. Segundo os resultados da mais recente revisão do Inventário Florestal Nacional (IFN5), a espécie ocupa uma área de 885,000 hectares, representando 27% da área florestal do país. Neste trabalho apresenta-se o resultado do desenvolvimento de um conjunto de ferramentas de modelação para a predição de ...
Livro Verde dos Montados
Lauw, Alexandra; Gonçalves-Ferreira, Alfredo; Gomes, Alberto; Moreira, Ana Cristina; Fonseca, Ana; Azul, Anabela; Mira, António; Murilhas, AntónioO Livro Verde dos Montados apresenta diversos objectivos que se interligam: Em primeiro lugar, o Livro Verde pretende reunir e sistematizar, de uma forma simples e acessível ao público, o conhecimento produzido em Portugal pelos investigadores e técnicos de várias instituições de investigação ou de gestão que estudam o Montado. Assume-se como uma oportunidade de caracterizar o sistema tendo em conta as suas vár...
Assessing wildfire risk probability in Pinus pinaster Ait. stands in Portugal.
Marques, Susete; Botequim, Brigite; Garcia-Gonzalo, Jordi; Borges, José Guilherme; Tomé, Margarida; Oliveira, ManuelaMaritime pine (Pinus pinaster Ait.) is an important conifer from the western Mediterranean Basin extending over 22% of the forest area in Portugal. In the last three decades nearly 4% of Maritime pine area has been burned by wildfires. Yet no wildfire occurrence probability models are available and forest and fire management planning activities are thus carried out mostly independently of each other. This paper...
Assessing wildfire occurrence probability in Pinus pinaster Ait. stands in Port...
Marques, S.; Garcia-Gonzalo, J.; Botequim, B.; Ricardo, A.; Borges, J.G.; Tomé, Margarida; Oliveira, M.M.Maritime pine (Pinus pinaster Ait.) is an important conifer from the western Mediterranean Basin extending over 22% of the forest area in Portugal. In the last three decades nearly 4% of Maritime pine area has been burned by wildfires. Yet no wildfire occurrence probability models are available and forest and fire management planning activities are thus carried out mostly independently of each other. This paper...
Biomass expansion factors for Eucalyptus globulus stands in Portugal
Soares, P.; Tomé, MargaridaOne of several procedures for estimating carbon stocks in forests is the estimation of tree or stand biomass based on forest inventory data. The two approaches normally used to convert field measurements of trees to stand biomass values are allometric biomass equations and biomass expansion factors (BEFs). BEFs are used in published National Forest Inventory results in which biomass is not estimated or as a com...
Stand, tree and crown variables affecting cone crop and seed yield of Aleppo pi...
Ayari, A.; Zubizarreta-Gerendiain, A.; Tomé, Margarida; Tomé, José; Garchi, S.; Henchi, B.In Tunisia, the Aleppo pine seed has a great importance, since in the last decades human consumption has risen considerable. Thus its regeneration and seed production capacities are important factors to take into account to reach the necessities of the country. To study the production of cones and seeds of Aleppo pine, Tunisia’s native Aleppo pine forests were surveyed in summer 2006, using 79 plots (40 × 25 m:...
Prediction of annual tree growth and survival for thinned and unthinned even-ag...
Nunes, Luís; Tomé, José; Patrício, Maria do Sameiro; Tomé, MargaridaThe Portuguese national forest strategy published in 2006 divided the Portuguese forest territory into three main functions: wood production, multifunctional systems and protected areas. Wood production is mostly related with pure even-aged stands of two species, the maritime pine (Pinus pinaster Ait.) and the blue gum (Eucalyptus globulus Labill.). Sustainable forest management of these productive areas requir...
Integration of empirical and process-based models for maritime pine in Portugal
Tomé, Margarida; Fontes, Luís; Nunes, Luís; Tomé, JoséForests are very important in Portugal, covering 39% of the land (agriculture occupies 33% and shrubland 21%). From those, the production forest represents 51% (28% maritime pine and 23% eucalyptus) while evergreen oaks represent 36% (23% cork oak and 13% holm oak). Other minor species cover just 12%. Maritime pine is the most important softwood in the country and the only one relevant for wood production (annu...
Prediction of annual tree growth and survival for thinned and unthinned evenage...
Nunes, Luís; Tomé, José; Patrício, Maria do Sameiro; Tomé, MargaridaThe Portuguese national forest strategy (Direcção Geral dos Recursos Florestais, 2006) proposed a specialization of the Portuguese forest territory according to three main functions: wood production, multifunctional systems and protected areas. Wood production is mostly related with pure even-aged stands of two species, the maritime pine (Pinus pinaster, Ait.) and the blue gum (Eucalyptus globulus Labill.). Sus...
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