Inducement of sustainable management planning of Mozogo-Gokoro National Park (Cameroon) by images processing
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 11, Issue 5
Abstract
In accordance with the implementation of forest management sustainability of protected areas, this work is based on detection of changes in the vegetation of the Mozogo-Gokoro National Park, located in ecologically fragile semiarid region of the Far North of Cameroon, as well as a search for explanatory mechanisms. A processing of Landsat images of years 1982, 1987, 2001 and 2015 have been done and then put in combination with demographic and rainfall data. Three large vegetable mosaics classes are distinguished over the years. The analysis of their spatiotemporal evolution translated a decrease in area of galleries forests in favor of dense to clear dry forests or more open vegetation, with an annual reduction rate of -0.33 % between 1982 and 2015. The vegetation indices (Normalized Difference Vegetation Index and Generalized Difference Vegetation Index) have a decreasing trend between 1982 and 2001 and an increase between 2001 and 2015, proof of a reforestation. A few significant differences of their values are observed between years showing certain stability of the vegetation, but not in account statistically with rainfall and population density. There is a worry about the 1.73 % per year expansion speed in surface of more open vegetation. Therefore, control actions are envisaged to limit this extension of savannah, most likely related to human impacts.
Authors and Affiliations
Rodrigue Constant Sandjong Sani, Mama Ntoupka, Adamou Ibrahima, Vroumsia Toua, Joachim Etouna
Keywords
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