Process-based models for forest ecosystem management: current state of the art and challenges for practical implementation

Mäkelä, Annikki; Landsberg, J. J.; Ek, Alan R.; Burk, Tammie; Ter‐Mikaelian, Michael T.; Ågren, Göran I.; Oliver, Chadwick Dearing; Puttonen, Pasi

doi:10.1093/treephys/20.5-6.289

Cited by 323 publications

(70 citation statements)

References 64 publications

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“…Conventional yield tables have been criticized and there have been great advancements (Pretzsch, 2009;Weiskittel et al, 2011), e.g. in the development of process based models (Mäkelä et al, 2000). The current portfolio of advanced modeling techniques is wide and also focused on complex systems, so that hypothetical indications on future states of forest stands and landscapes can be actually provided over a wide range of conditions (e.g.…”

Section: The Issue Of Low Predictabilitymentioning

confidence: 99%

Managing forests in a changing world: the need for a systemic approach. A review

et al. 2017

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Aim of study: The paper is a scientific commented discussion with the aim of defining a framework which allows both a comprehensive vision of forest dynamics, as well as an adaptive management approach and policy procedures more suited to a changing and inherently unpredictable world.Main results: We identify the main challenges facing forestry in relation to recent developments in forestry thinking, i.e. the paradox of aiming at sustainability in a changing environment, a shifting perception of the relationship between ecological and social systems, the recognition of forest ecosystems as complex adaptive systems, the need for integrating the social and ecological dimensions of forestry into a single framework, and the growing awareness of the importance of the ethical approach to the forest. We propose the concept of "systemic forestry" as a paradigm for better understanding forest dynamics and for guiding management and public actions at various levels. We compare the systemic approach with different silvicultural and forest management approaches which have been proposed in the last decades.Research highlights: Our analysis shows that a systemic approach to forestry has five main consequences: 1. forestry is viewed as a part of landscape dynamics through a multi-sectoral coordination, 2. the logic of action changes from norm to process, 3. conservation is a dynamic search for resilience, 4. multi-functionality is achieved through a multi-entries approach integrating ecological, social and economic components of sustainability, 5. forestry institutions are reframed to address the issue of changing interactions among actors, 6. a change in the ethical approach to the forest is needed.

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Section: The Issue Of Low Predictabilitymentioning

confidence: 99%

Managing forests in a changing world: the need for a systemic approach. A review

et al. 2017

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“…to judge carbon sequestration or nitrate leaching. Therefore, they consider a multitude of environmental influences (see reviews in Constable and Friend, 2000;Landsberg, 2003;Mäkelä et al, 2000). PBMs have also been introduced as management tools, particularly for plantations, where the concept of the «average tree» applies best e.g.…”

Section: Introductionmentioning

confidence: 99%

Challenges for evaluating process-based models of gas exchange

Grote

Korhonen²,

Mammarella³

2011

For. syst.

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Physiologically-based (or process-based) models are commonly applied to describe plant responses mechanistically in dependence on environmental conditions. They are increasingly evaluated with eddy-covariance measurements that integrate carbon and water exchange of an area of several hectares (called the fetch). However, almost all models applied to date in such exercises have considered only the dominant tree species and neglected other species that contributed to the measured gas exchange rates-either in separate patches or in mixture. This decreases the transferability of the model from one site to another because the contributions from other species might be different. It is therefore a major challenge in modeling today to separate the measured gas exchanges by sources.In this study, a detailed physiologically-based biosphere model is applied that allows distinguishing between tree species in mixed forests, considering them as «vegetation cohorts» that interact with each other. The sensitivity of the model to different assumptions about how different tree species contribute to an integrated measurement of standscale gas exchange is investigated. The model exercise is carried out for a forest site in Finland with dominant Scots pine but presence of significant amounts of Norway spruce and birch. The results demonstrate that forest structure affects simulated gas exchange rates indicating a possible importance of considering differences in physiological properties at the species level. It is argued that the variation of stand structure within the range of eddy-covariance measurements should be better accounted for in models and that inventory measurements need to consider this variation.Key words: forest structure; understorey; physiologically-oriented model; eddy-flux measurements; sensitivity analysis. ResumenRetos para la evaluación de modelos basados en procesos de intercambio de gases en rodales con diversas especies Los modelos con base fisiológica (o basados en procesos) se aplican habitualmente para describir las respuestas de la planta mecanísticamente dependiendo de las condiciones ambientales. Son evaluados cada vez más frecuentemente con mediciones de eddy-covariance que integran el intercambio de carbono y el agua de una superficie de varias hectáreas. Sin embargo, casi todos los modelos aplicados hasta la fecha han considerado sólo las especies arbóreas dominantes y se han descuidado otras especies que contribuyen a las tasas de intercambio gaseosos medidas-ya sea en zonas separadas o en mezcla. Esto disminuye la posibilidad de transferir el modelo de un sitio a otro debido a que las contribuciones de otras especies pueden ser diferentes. Por tanto, es un reto importante en la modelización separar el intercambio gaseoso medido por fuente emisora.En este estudio, se aplica un modelo detallado con base fisiológica de la biosfera que permite distinguir entre las especies de árboles en bosques mixtos, considerándolas como «cohortes de vegetación» que interaccionan unos con otros. Se estudia l...

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“…Simulated processes involve primary productivity (3-PG -Landsberg & (Nolé et al 2009) and autotrophic respiration (Minunno et al 2010). Models in the process-based family that are closest to the operational application stage can simulate growth and yield of a single stand (Makela et al 2010). However, there are also models being developed to address larger, regional and successional scale problems, e.g., GIS-based models of stand development in the tropics (Ditzer et al 2000).…”

Section: Matter-balance Modelsmentioning

confidence: 99%

Modeling Italian forests: state of the art and future challenges

Vacchiano¹,

Magnani²,

Collalti³

2012

iForest

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This review is a follow-up to the first meeting of the Forest modeling working group (FMWG) of the Italian Society of Silviculture and Forest Ecology (SISEF), held in December 2009. 18 talks were delivered to an audience of 40 researchers. We review the state of the art of forest ecosystem modeling in Italy, highlight findings from Italian research groups, and summarize relevant issues. Developing on the discussion session of the meeting, we indicate current research gaps and future challenges for modelers, forest ecologists and foresters alike, with a special emphasis on model validation, data availability, and communication between researchers and managers.

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Process-based models for forest ecosystem management: current state of the art and challenges for practical implementation

Cited by 323 publications

References 64 publications

Managing forests in a changing world: the need for a systemic approach. A review

Managing forests in a changing world: the need for a systemic approach. A review

Challenges for evaluating process-based models of gas exchange

Modeling Italian forests: state of the art and future challenges

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