15 documents found, page 1 of 2
A climate change adaptive dynamic programming approach to optimize eucalypt sta...
Ferreira, L.; Constantino, M.; Borges, J.G.; Garcia-Gonzalo, J.; Barreiro, S.The aim of this paper is to present approaches to optimize stand-level, short-rotation coppice management planning, taking into account uncertainty in stand growth due to climate change. The focus is on addressing growth uncertainty through a range of climate scenarios so that an adaptive capacity may be possible and the vulnerability of the stand to climate change may be reduced. The optimization encompasses f...
With addressing multicriteria forest management Pareto frontier methods: An app...
Borges, J.G.; Garcia-Gonzalo, J.; Bushenkov, V.; McDill, M.E.; Marques, S.; Oliveira, M.M.The practice of multicriteria forest management planning is often complicated by the need to explicit a priori goals and preferences of the decisionmaker. This manuscript aims at describing an approach that may take advantage of a posteriori preference modeling to facilitate the specification of the levels of achievement of various objectives in a typical forest management planning framework. The goal is to pro...
A Decision Support System for Assessing Trade-Offs between Ecosystem Management...
Garcia-Gonzalo, J.; Bushenkov, V.; McDill, M.; Borges, J.G.Cork oak (Quercus suber L.) and holm oak (Quercus rotundifolia) ecosystems are characteristic of Mediterranean forestry in Portugal. Even though cork is the most valuable product, these ecosystems provide multiple products and services. Assessing trade-offs between multiple goals is thus critical for the effectiveness of oak ecosystem management planning. This paper focuses on the development of a decision supp...
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.; Tome, M.; 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...
Computer-based tools for supporting forest management. The experience and the e...
Borges, J.G.; Nordstrom, E.M.; Garcia-Gonzalo, J.; Hujala, T.; Trasobares, A.Computer-based tools for supporting forest management. The experience and the expertise world-wide answers a call from both the research and the professional communities for a synthesis of current knowledge about the use of computerized tools in forest management planning. According to the aims of the Forest Management Decision Support Systems (FORSYS) (http://fp0804.emu.ee/) this synthesis is a critical succes...
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...
Assessing impacts of Common Agricultural Policy changes on regional land use
Borjes, P.J; Fragoso, R.; Garcia-Gonzalo, J.; Borges, J.G.; Marques, S.; Lucas, M.R.This paper discusses research aiming at assessing Common Agricultural Policy impacts on agriculture and forestry. For this purpose an approach is developed that includes a linear programming model to estimate the Positive Mathematical Programming production cost function coefficients of current agricultural– forestry activities. It further includes a heuristic — simulated annealing — to generate solutions for e...
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...
A three-step approach to post-fire mortality modelling in maritime pine (Pinus ...
Garcia-Gonzalo, J.; Marques, S.; Borges, J.G.; Botequim, B.; Oliveira, M.M.; Tomé, J.; Tomé, MargaridaMaritime pine (Pinus pinaster Ait) is a very important timber-producing species in Portugal with a yield of ~67.1 million m3 year21. It covers ~22.6 per cent of the forest area (710.6 × 103 ha). Fire is the most significant threat to maritime pine plantations. This paper discusses research aiming at the development of post-fire mortality models for P. pinaster Ait stands in Portugal that can be used for enhance...
Assessing forest management strategies using a contingent valuation approach an...
Madureira, Lívia; Nunes, Luís C.; Borges, J.G.; Falcão, André O.The assessment of alternative forest management strategies should account not only for the private benefits to forest landowners but also for the ecological, environmental and economic benefits valued by society. There are a number of empirical valuation methods that may contribute to that assessment. These methods involve several steps: data acquisition, model specification and estimation. In this paper, this ...