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Mushroom picking has become a widespread autumn recreational activity in the Central Pyrenees and other regions of Spain. Predictive models that relate mushroom production or fungal species richness with forest stand and site characteristics are not available. This study used mushroom production data from 24 Scots pine plots over 3 years to develop a(More)
It is reasonable to assume that there is a relationship between the spatial distribution of forest fuels and fire hazards. Therefore, if fire risk is to be included into numerical forest planning, the spatial distribution of risky and non-risky forest stands should be taken into account. The present study combines a stand-level fire risk model and landscape(More)
Heinonen, T. & Pukkala, T. 2004. A comparison of one-and two-compartment neighbourhoods in heuristic search with spatial forest management goals. Silva Fennica 38(3): 319–332. This study presents a comparison of the performance of four heuristic techniques with one-and two-compartment neighbourhoods in harvest scheduling problems including a spatial(More)
The existence of multiple decision-makers and goals, spatial and non-linear forest management objectives and the combinatorial nature of forest planning problems are reasons that support the use of heuristic optimisation algorithms in forest planning instead of the more traditional LP methods. A heuristic is a search algorithm that does not necessarily find(More)
Studies on optimal stand management often make simplifications or restrict the choice of treatments. Examples of simplifications are neglecting natural regeneration that appears on a plantation site, omitting advance regeneration in simulations, or restricting thinning treatments to low thinning (thinning from below). This study analyzed the impacts of(More)
Pinus pinea is one of the most important tree species in the Mediterranean region due to the economic value of its edible seeds called “piñones”. Timber also represents an important source of income from this species. Generally, P. pinea stands have been managed to maximize either timber or seed production, optimization of the joint production of both(More)
The present paper documents the practical applicability of growth simulators, gives an overview of current model approaches, defines standards for the description and evaluation of growth models and growth simulators and indicates research needs. The recommendations aim to give users of growth simulators confidence in the transition to modern prediction(More)
In Finland, management of biological diversity at the landscape level is complicated by the relatively small size of the holdings. To alleviate this problem, this study presents a hierarchical planning model that aims at combining spatial landscape-level ecological goals with holding-level owner-specific goals. The influence of ecological objectives extends(More)
Title: The visual preferences for forest regeneration and field afforestation-four case studies in Finland Karjalainen, Eeva. 2006. The visual preferences for forest regeneration and field afforestation-four case studies in Finland. ABSTRACT The overall aim of this dissertation was to study the public's preferences for forest regeneration fellings and field(More)