Évaluation d'un paysage à l'aide d'indices de diversité

Jules WILMET; Vinciane TIRTIAUX; Jean-Pierre HEYLEN

Bulletin de la Société Géographique de Liège

0770-7576 2507-0711

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Jules WILMET, Vinciane TIRTIAUX & Jean-Pierre HEYLEN

Évaluation d'un paysage à l'aide d'indices de diversité

(32 (1996/1) - Recherches en Géographie Humaine)

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Index de mots-clés : entropie, indices texturaux, mesure de densité, paysage, télédection

Abstract

In the framework of a systemic conception of the geographic landscape, a study of its diversity is performed using textural indices issued from remote sensing images Among several tested relations, the etropy and the density of land cover boundaries seem to be the most efficient parameters. They have been computed into circular landscape units of 81.7 ha of size. A PCA has been realized in order to obtain a synthesis of the landscape structure. The first component was selected explaining more than 80% of the total variance. Its is weakly correlated with a digital elavation model. The latter was elaborated as a roughness indicator in order to enhance the attractivity of the landscape. In conclusion, these two parameters seem to be complementary indicators well suited to evaluate this attractivity.

Index by keyword : density measurements, entropy, landscape, remote sensing, textural indices

Pour citer cet article

Jules WILMET, Vinciane TIRTIAUX & Jean-Pierre HEYLEN, «Évaluation d'un paysage à l'aide d'indices de diversité», Bulletin de la Société Géographique de Liège [En ligne], 32 (1996/1) - Recherches en Géographie Humaine, URL : https://popups.uliege.be/0770-7576/index.php?id=3680.