Effects of Catastrophic Insect Outbreaks on the Harvesting Solutions of Dahurian Larch Plantations

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dc.contributor University of Helsinki, Department of Forest Sciences en
dc.contributor University of Helsinki, Department of Forest Sciences en
dc.contributor.author Jin, Qi
dc.contributor.author Valsta, Lauri
dc.contributor.author Heliövaara, Kari
dc.contributor.author Li, Jing
dc.contributor.author Luo, Youqing
dc.contributor.author Shi, Juan
dc.date.accessioned 2017-03-01T14:16:01Z
dc.date.available 2017-03-01T14:16:01Z
dc.date.issued 2015-02-19
dc.identifier.citation Jin , Q , Valsta , L , Heliövaara , K , Li , J , Luo , Y & Shi , J 2015 , ' Effects of Catastrophic Insect Outbreaks on the Harvesting Solutions of Dahurian Larch Plantations ' , International Journal of Forestry Research , vol. 2015 , 421858 . https://doi.org/10.1155/2015/421858 en
dc.identifier.issn 1687-9368
dc.identifier.other PURE: 46253864
dc.identifier.other PURE UUID: 93670a8f-8f94-4d27-9a85-1ed865c19af4
dc.identifier.other ORCID: /0000-0002-7555-7271/work/29179681
dc.identifier.other ORCID: /0000-0003-0657-8885/work/29157132
dc.identifier.uri http://hdl.handle.net/10138/176383
dc.description.abstract Optimal harvesting under pest outbreak risk was studied on a set of even-aged Dahurian larch (Larix gmelinii) stands in northeastern Inner Mongolia, China. The effects of catastrophic pest outbreaks caused by the Siberian moth (Dendrolimus sibiricus) on the economic harvesting plan are compared through both deterministic and stochastic cases. Stand simulation is based on an individual-tree growth system. A scenario approach is applied when simulating the effects of catastrophic pest outbreaks. Insect damage is assumed to be a Poisson process with an average rate of 0.1 per year. One hundred scenarios of insect damage are created using the Poisson process to simulate the distribution of bare land value of each of the optimal regimes. Numerical results show that the optimal rotation is shortened with an increasing probability of a catastrophe. The average bare land values in the stochastic case are approximately 14.8% to 22.9% lower. Numbers of thinnings are decreased for most plots when seeking a highest bare land value, compared to the deterministic optima. If given a constant thinning rate, increasing risk-taking shortens the optimum rotation, as the model set used. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof International Journal of Forestry Research
dc.rights en
dc.subject 4112 Forestry en
dc.title Effects of Catastrophic Insect Outbreaks on the Harvesting Solutions of Dahurian Larch Plantations en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1155/2015/421858
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion
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