- Factors of plants vegetation fragmentation are not only human but also natural; - The vulnerability of vegetation fragmentation factors is varied. II. MATERIAL AND METHODS The data used is from the results of previous work on the study area, satellite images and thematic maps. The main features of these thematic maps and satellite images are presented in table 1. Table 1: Main characteristics of image data and thematic maps used N° Data Sources Format Scale/ Spectral resolution Date Scène Spatial used (micrometers) coordinates résolution 1 Landsat 5 GLCF Digital 30 TM2: from 0,52 to 23 – TM Image (Raster) meters 0,60 (green) ; TM3 : Nov. 0,63 to 0,69(red); 2000 TM4 : 0,76 to 0,90 p192 / r055 (near infrared);TM7 (2,10 to 2,35) middle infrared 2 SRTM Image GLCF Digital 90meters - 23 (Raster) Nov. 2 000 3 Topographic IGN Benin, Raster 1/200 000 - 1955 - map sheet of IGN France Zagnanado NB 31-20-21 Table 1: Main characteristics of image data and thematic maps used (follow) N° Data Sources Format Scale/ Spectral Date Scène Spatial resolutionused coordinates résolution (micrometers)
- Factors of plants vegetation fragmentation are not only human but also natural; - The vulnerability of vegetation fragmentation factors is varied. II. MATERIAL AND METHODS The data used is from the results of previous work on the study area, satellite images and thematic maps. The main features of these thematic maps and satellite images are presented in table 1. Table 1: Main characteristics of image data and thematic maps used N° Data Sources Format Scale/ Spatial résolution Spectral resolution used (micrometers) Date Scène coordinates 1 Landsat – 5 TM Image GLCF Digital (Raster) 30 meters TM2: from 0,52 to 0,60 (green) ; TM3 : 0,63 to 0,69(red); TM4 : 0,76 to 0,90 (near infrared);TM7 (2,10 to 2,35) middle infrared 23 Nov. 2000 p192 / r055 2 SRTM Image GLCF Digital (Raster) 90meters - 23 Nov. 2 000 3 Topographic map sheet of Zagnanado NB 31-20-21 IGN Benin, IGN France Raster 1/200 000 - 1955 - Table 1: Main characteristics of image data and thematic maps used (follow) N° Data Sources Format Scale/ Spatial résolution Spectral resolutionused (micrometers) Date Scène coordinates
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