Intégration de fonctions topologiques du paysage dans le calcul des distances-coût
Distance is a basic concept in the issue of animal species motion. Cost distances are seeing increasing use, to measure a realistic distance, by means of resistance values given for each landscape types. Here, we propose a method to compute resistance values by using “topological functions of landsc...
| Main Authors: | , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Unité Mixte de Recherche 8504 Géographie-cités
2007-07-01
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| Series: | Cybergeo |
| Subjects: | |
| Online Access: | http://journals.openedition.org/cybergeo/9262 |
| Summary: | Distance is a basic concept in the issue of animal species motion. Cost distances are seeing increasing use, to measure a realistic distance, by means of resistance values given for each landscape types. Here, we propose a method to compute resistance values by using “topological functions of landscape”, i.e. by taking account of proximity to habitat/ non-habitat edges. We used a data set concerning the spreading of the fossorial water vole outbreak in the Franche-Comté region, and we tested several functions. The results show that statistical correlations clearly increase in comparison with usual cost-distances. |
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| ISSN: | 1278-3366 |