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Paysages de guerre et Lidar : de la caractérisation des polémoformes à la conservation des patrimoines naturel et culturel de la forêt domaniale de Verdun (Meuse, France)

Abstract : In 2013, an airborne LiDAR mission conducted over the Verdun battlefield has brought to light landforms from the First World War. Concealed by a large forest cover of 10,000 ha, these landforms, called polemoforms, have a significant archaeological value because they constitute artefacts from the past. They should be inventoried to improve their conservation for the sustainable management of the forest. However, at the scale of the entire site, this work is only possible if an automatised mapping method is developed. To achieve this, the methodology used is threefold: (i) It consists in extracting landforms from the digital terrain model by means of a semi-automatic algorithm; (ii) Landforms geometry is studied using a combined approach of multivariate analyses, which allows to classify similar polemoforms; (iii) Classes interpretation is carried out on the field site and supplemented by historical documents collected in ten French and German archives centres. The resulting map reveals the presence of a huge number of remaining polemoforms, approximately 600,000, in addition to more than 400 km of fire and communication trenches. Their morphological signature is rich and due to the different ways of building facilities. Their location is determined by clearly defined spatial patterns such as distance to the frontline and pre-war landscapes parameters. Beyond the reproducible nature of the method, which may contribute to the fundamental research development on other battlefields, this thesis provides operational tools for management and conservation of the historical, cultural and natural heritage of the Verdun forest. As a result, the produced iconographic and cartographic corpus will be directly used in the next forest management plan, in order to optimise the safeguarding of polemoforms and associated remnants
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Submitted on : Tuesday, May 14, 2019 - 10:45:18 AM
Last modification on : Friday, September 18, 2020 - 2:34:59 PM

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  • HAL Id : tel-02128272, version 1

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Rémi de Matos-Machado. Paysages de guerre et Lidar : de la caractérisation des polémoformes à la conservation des patrimoines naturel et culturel de la forêt domaniale de Verdun (Meuse, France). Géographie. Université Sorbonne Paris Cité, 2018. Français. ⟨NNT : 2018USPCC033⟩. ⟨tel-02128272⟩

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