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Landscape dynamics of the classified forest of Lama in Southern Benin
Abstract
The Lama (South Benin) classified forest has undergone profound changes as a result of the restoration and conservation efforts that need to be quantified using landscape ecology techniques and phytosociology. Aiming to map land cover and to evaluate landscape dynamics we assessed two Landsat images (2000 Landsat ETM+ and 2015 Landsat OLI TIRS), using transition matrix and decision tree algorithm model. Phytosociological inventories were carried out to assess the conservation status of the classified forest from 80 records on a transect of 50 m long and 10 m wide. Analyzes show that in 2015 the forest covers 27.85% of the landscape compared with 8.02% in 2000, to the detriment of anthropogenic classes after management. The main spatial transformation processes in the landscape were aggregation, creation and attrition. Phytosociological classification showed two physiognomic vegetation groups based on 192 species. These groups are specifically diversified with the predominance of species from the Guinea-Congolese base-element which confirms acceptable conditions in the forest.
... First, the mastery of the study area but also the choice of a reduced number of land use classes. Indeed, a solid knowledge of the field is an element that improves the quality of classification [23]. But also, many studies have shown that the fewer classes are, the more errors of confusion between them decrease [16,20,24]. ...
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