La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Land cover mapping and data availability in critical terrestrial ecoregions: A global perspective with Landsat thematic mapper and enhanced thematic mapper plus data
Auteurs :	Le Yu, Auteur ; Yichuan Shi, Auteur ; Peng Gong, Auteur
Type de document :	Article
Dans :	Biological Conservation (190 OCT 2015)
Article en page(s) :	34-42
Langues:	Anglais
Résumé :	Land cover provides objective and multi scale information on the extent and conditions of habitats both currently and retrospectively. Over four decades since the launch of the first land-observation satellite Landsat-1 in 1972, a tremendous number of earth observation images have been acquired and archived. Here we examined land cover mapping in 142 critical terrestrial ecoregions (identified by WWF Global 200) from three aspects: Landsat Thematic Mapper and Enhanced Thematic Mapper Plus (TM/ETM+) data availability, literature and existing global land cover map. We found that: (1) the availability of Landsat TM/ETM+ for historical land-cover change analysis in those ecoregions is poor. Only

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