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A first typology of Oak and Scots pine mixed stands in the Orleans forest (France), based on the canopy spatial structure

Abstract : In recent years there has been a growing interest in uneven-aged or mixed forest stands. This interest is the result of both new demands of society and changing forestry practices. Unfortunately, due to their high complexity, the dynamics of these stands are more difficult to understand than those of pure and even-aged stands. Thus, new research questions have arisen in terms of stand description, stand dynamics and growth modelling. The first step toward better management of such mixed or uneven-aged stands is to describe them precisely, and especially to take into account their variability by defining different types of stands. This step corresponds to a classical typological approach. As spatial structure plays a key role in the dynamics of such stands, spatial structure analysis can be used to infer certain types of information on the biological processes involved in the growth and the dynamics of heterogeneous stands, and thus to build a typology. The aim of this paper is to present a first typology of oak and Scots pine mixed stands, based on a spatial structure analysis of canopy trees. In order to answer this question, we analysed the spatial structure in a mixed stand of oak and Scots pine from the French Centre region. We used the classical Ripley function L(r), and intertype function L12(r) to characterise the specific spatial structure of each population, and the structure of the interaction between populations. We then used the results of this analysis to build a typology for these stands, with four main types. Finally we discuss how the four types may have resulted from ecological processes and historical management, and how such a typology could be used to simulate realistic virtual stands when real data are unavailable.
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Submitted on : Friday, May 15, 2020 - 12:47:45 PM
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  • HAL Id : hal-02588508, version 1
  • IRSTEA : PUB00020653



Marie Ange Ngo Bieng, Christian Ginisty, F. Goreaud, Thomas Perot. A first typology of Oak and Scots pine mixed stands in the Orleans forest (France), based on the canopy spatial structure. New Zealand Journal of Forestry Science, 2006, 36 (2-3), pp.325-346. ⟨hal-02588508⟩



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