Private forest owner willingness to mobilise wood from dense, small-diameter tree stands

Triplat, Matevž; Helenius, Satu; Laina, Rubén; Krajnc, Nike; Kronholm, Thomas; Ženko, Zdenka; Hujala, Teppo

doi:10.1016/j.forpol.2022.102901

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…Biological resources, such as fishes, crops, and livestock, are essential for the sustainability of human lives (Bont et al, 2022;Kang et al, 2022;Li et al, 2022;Vogel et al, 2023). The aim of biological resource management is to maximize the utility while minimizing the harvesting cost (Singh & Weninger, 2023;Triplat et al, 2023) as well as the disutility that is triggered by resource exhaustion or extinction (Segura et al, 2019;Upmann et al, 2021). Thus, optimal control theory provides normative descriptions to deal with the general resource management problem (e.g., Naevdal, 2023;Sethi, 2021).…”

Section: Introductionmentioning

confidence: 99%

Optimal harvesting policy for biological resources with uncertain heterogeneity for application in fisheries management

Yoshioka

2024

Natural Resource Modeling

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Conventional harvesting problems for natural resources often assume physiological homogeneity of the body length/weight among individuals. However, such assumptions generally are not valid in real‐world problems, where heterogeneity plays an essential role in the planning of biological resource harvesting. Furthermore, it is difficult to observe heterogeneity directly from the available data. This paper presents a novel optimal control framework for the cost‐efficient harvesting of biological resources for application in fisheries management. The heterogeneity is incorporated into the resource dynamics, which is the population dynamics in this case, through a probability density that can be distorted from reality. Subsequently, the distortion, which is the model uncertainty, is penalized through a divergence, leading to a nonstandard dynamic differential game wherein the Hamilton–Jacobi–Bellman–Isaacs (HJBI) equation has a unique nonlinear partial differential term. Here, the existence and uniqueness results of the HJBI equation are presented along with an explicit monotone finite difference method. Finally, the proposed optimal control is applied to a harvesting problem with recreationally, economically, and ecologically important fish species using collected field data.

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Section: Introductionmentioning

confidence: 99%

Optimal harvesting policy for biological resources with uncertain heterogeneity for application in fisheries management

Yoshioka

2024

Natural Resource Modeling

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Non-industrial Private Forest Owners’ Knowledge and Forest Management Preferences Regarding Forest Damage in Northern Sweden

Kronholm

2023

Small-scale Forestry

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In northern Sweden, large forest areas are affected by extensive damage caused by moose, fungi, beetle and other biological pests. For non-industrial private forest (NIPF) owners this leads to large losses of value, not only in economic terms but also in the form of loss of biodiversity and amenity values. Therefore, several research projects are underway to develop new silvicultural methods and other measures to reduce damage. However, a successful implementation of these will often depend on the willingness and knowledge of the forest owners. The objective of this study was, therefore, to elucidate NIPF owners’ knowledge about forest damage and their preferences regarding forest management alternatives that potentially could mitigate the damage situation. Data were collected through a questionnaire that was distributed to a random sample of 1,177 NIPF owners in northern Sweden, and the response rate was 31% (n = 368). The results show that 19% of the NIPF owners did not know the current damage situation in their own forest. In addition, NIPF owners judged that their knowledge to identify damage themselves is quite limited, except for damage caused by moose. Regarding future management options, many were positive towards avoiding clear-cuts in suitable areas, while many were negative towards implementing alternative tree species such as larch and lodgepole pine. The study concludes that there is a clear need to inform and educate NIPF owners about forest damage, but also that there will be challenges in reaching all types of owners.

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Private forest owner willingness to mobilise wood from dense, small-diameter tree stands

Cited by 2 publications

References 29 publications

Optimal harvesting policy for biological resources with uncertain heterogeneity for application in fisheries management

Optimal harvesting policy for biological resources with uncertain heterogeneity for application in fisheries management

Non-industrial Private Forest Owners’ Knowledge and Forest Management Preferences Regarding Forest Damage in Northern Sweden

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