Growth and yield models for uneven-sized forest stands in Finland

Pukkala, Timo; Lähde, Erkki; Laiho, Olavi

doi:10.1016/j.foreco.2009.03.052

Cited by 133 publications

(149 citation statements)

References 22 publications

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“…In addition, the ingrowth model by Wikberg (2004) that is currently in use was included, as well as the Finnish ingrowth model by Pukkala et al (2009) for "uneven-sized" forest stands. Mortality models were not explored.…”

Section: Selection Of Concepts and Models Which Mightmentioning

confidence: 99%

“…Simulation periods longer than 30 or 40 years are not often recommended for individual tree models (Hasenauer, personal communication;Nagel et al 2006). However, the Finnish model by Pukkala et al (2009) was used for simulations over 100 years. The two Finnish matrix models for predicting the future stand structure in particular stands using transition probabilities between different tree size classes (Kolström 1993;Tahvonen et al 2010) were also designed to cover the whole rotation period.…”

Section: Overview Of Concepts and Models Applicable To Multi-layered mentioning

confidence: 99%

“…The number of multi-layered forest stands is rather limited with respect to the data used for parameterization, both for the Nordic and the other models. One interesting exception is Pukkala (2009), who parameterized his model with data from experiments with "uneven-sized" trees and old NFI data originating from a time when multi-layered forest was more common. Hasenauer (1994) and Sterba and Monserud (1997) developed age-independent growth models suitable for mixed or uneven-aged stands in Austria.…”

Section: Description Of Parameterization and Validation Datamentioning

confidence: 99%

“…The ingrowth is the weakest component in many growth models designed for multi-layered stands (Hasenauer 2006;Pukkala 2009). Wikberg (2004) used information about new trees found on re-measured NFI plots, whilst Pukkala (2009) examined Table 2.…”

Section: Ingrowthmentioning

confidence: 99%

See 3 more Smart Citations

Application and limitations of growth models for silvicultural purposes in heterogeneously structured forest in Sweden

Drößler¹,

Fahlvik²,

Elfving³

2013

J. For. Sci.

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ABSTRACT:The paper addresses the problem of estimating future stand development in heterogeneously structured forests in Sweden; specifically, multi-layered spruce stands and mature pine stands with advanced spruce undergrowth. We first introduce various supporting concepts and models with their empirical databases, model validation and constraints. Secondly, Swedish single-tree growth functions designed for more heterogeneously structured forest are tested using data from inventory plots, a thinning experiment in an uneven-aged forest stand, and yield plots in pristine forest. Future growth of a managed, multi-layered forest was simulated and is compared with other selected functions. Simulation results, expected errors and time constraints are discussed. For most models, projected stand basal area growth deviated 10-20% from the observed growth in individual stands. In single stands, the deviation ranged from 0 to 60%. Validation periods were often 5-15 years, sometimes even more than 30 years. For Swedish single-tree basal area growth functions, on average, a 5% overestimate was found for heterogeneously structured forest across Sweden. Observed growth in a boreal single-tree selection forest was underestimated by 12.5% fifteen years after thinning from above.

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Section: Selection Of Concepts and Models Which Mightmentioning

confidence: 99%

Section: Overview Of Concepts and Models Applicable To Multi-layered mentioning

confidence: 99%

Section: Description Of Parameterization and Validation Datamentioning

confidence: 99%

Section: Ingrowthmentioning

confidence: 99%

See 2 more Smart Citations

Application and limitations of growth models for silvicultural purposes in heterogeneously structured forest in Sweden

Drößler¹,

Fahlvik²,

Elfving³

2013

J. For. Sci.

View full text Add to dashboard Cite

show abstract

“…Diameter of trees in a specific time and location can reflect the sustainability aspect of community forest management (Widayanti 2004). Further, Pukkala et al (2009) suggested that equation model that can be used to calculate diameter increment is logarithmic model in which the diameter can be a logarithmic function of trees height.…”

Section: Introductionmentioning

confidence: 99%