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Modélisation des effets de la compétition interspécifique et des pratiques sylvicoles sur la croissance de jeunes plants forestiers.

Abstract : Planting is an interesting tool for implementing forest management strategies and is also a critical step in the forest management cycle. During this period, site preparation is very often used to ensure the success of the plantation by alleviating constraints such as competition from accompanying vegetation.Growth models have been widely used for many years and are effective tools for simulating the impact of silvicultural operations and competition. However, there is currently no tree growth model in France to assess or compare silvicultural operations carried out during young stages, even for commonly cultivated commercial species. Most of them are phenomenological models describing the dendrometric variables as a function of the technical characteristics of the silvicultural operations carried out. These models generally produce robust predictions that are difficult to extrapolate outside of their application conditions. Other models, said to be functional, are based on ecophysiological processes in order to estimate the growth of the seedlings but however require a number of parameters which can be difficult to obtain and, in addition, produce tree growth forecasts which are not always accurate. Hybrid models that combine measurement methods and ecophysiological methods are a promising approach that allows the use of functional relationships expressing tree growth while obtaining a robust prediction of growth.The eagle fern (Pteridium aquilinum L. Kuhn) is one of the problematic species for the success of young plantions. It reacts quickly to the opening of the canopy and is very competitive for the resources of the environment (especially water and light), thus being able to delay the development of young trees for several years.
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https://pastel.archives-ouvertes.fr/tel-03191601
Contributor : Abes Star :  Contact
Submitted on : Wednesday, April 7, 2021 - 12:15:28 PM
Last modification on : Tuesday, April 13, 2021 - 2:04:11 PM

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  • HAL Id : tel-03191601, version 1

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Jean-Charles Miquel. Modélisation des effets de la compétition interspécifique et des pratiques sylvicoles sur la croissance de jeunes plants forestiers.. Sylviculture, foresterie. AgroParisTech, 2020. Français. ⟨NNT : 2020AGPT0003⟩. ⟨tel-03191601⟩

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