Volume 20, Numéro 1, Pages 16-41
The assessment carried out in the watershed landscape of three watersheds in central Togo is a contribution to the sustainable management of habitats. 122 sampling points made up of 5 ha plots following a 1000 m grid was regularly generated and then superimposed on the vector of the study area thanks to the QGIS software. The resulting grid was imported into the Collect Earth complex and constellation of spatial platforms (Google Earth, Bing Map, and Yahoo Map) with high-resolution images (Spot, IKONOS, Digital Globe ...). Then a floristic inventory was carried out from 30 plots of 900 m2 following a regular 100 m grid in the Agbandi community forest (FCA). According to the IPCC land classification system, 47,54%; 22,95% and 8,19% represent respectively the occupancy rates of cultivated land, wetlands/prairies and forest land for an accuracy rate of 98,36%. Spatial exploration also reveals that 55,73% of the sample plots are not accessible; however 15,57% and 13,93% of the plots are located respectively between 2-3 km and 3-5 km from the tracks. The FCA florula is composed of 131 species divided into 117 genera and 43 families. Fabaceae and Rubiaceae are the most important families. Sudano Zambézian and Sudano Guinean species dominate this flora. Four plant groups composed of Vitellaria paradoxa savannahs; Tectona grandis open forests; Isoberlinia doka and Pterocarpus erinaceus have been identified. This study, which is the first of its kind, opens perspectives for modeling forest production and productivity of these ecosystems protected by endogenous values.
sustainable management ; Collect Earth ; watershed ; forest ; Togo