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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Optimal harvesting decision paths when timber and water have an economic value in uneven forests
Authors: Ovando, Paola
Speich, Matthias
et. al: No
DOI: 10.3390/f11090903
Published in: Forests
Volume(Issue): 11
Issue: 9
Page(s): 903
Issue Date: 2020
Publisher / Ed. Institution: MDPI
ISSN: 1999-4907
Language: English
Subjects: Optimal-control model; Uneven-aged forest; Water yield; Wald; Ökonomie; Waldwirtschaft
Subject (DDC): 333: Economics of land and resources
Abstract: We developed an uneven-aged forest economic decision-making framework that combines: (i) a size-structured matrix model, based on growth and mortality predictions of a dynamic process-based forest landscape model, (ii) an optimal control model that determines the dynamics of control and state variables, which in turn are defined by tree harvesting and forest stock, respectively, and (iii) a water yield function that depends on changes in the leaf area index (LAI), the latter being affected by forest management. This framework was used to simulate the effects of economic-driven harvesting decisions on water yields on a catchment of South-Western Swiss Alps when both timber and water benefits are considered. Water benefits are estimated as environmental prices considering current water demands for drinking, irrigation and hydropower production. We simulated optimal harvesting decisions given the initial forest structure at each 200 m × 200 m grid cells, a set of restrictions to harvesting, and specific species survival, recruitment and growth probabilities, all of which are affected by the stand’s LAI. We applied this model using different harvesting restriction levels over a period of 20 to 40-years, and accounting for single and joint timber and water benefits. The results suggested that at the environmental prices estimated at the catchment area, water benefits have a slight influence on harvesting decisions, but when water is accounted for, harvesting decisions would include more tree species and different diameter classes, which, in principle, is expected to favor more diverse forest structures.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Sustainable Development (INE)
Appears in collections:Publikationen School of Engineering

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