Simulation of the Dynamics of Land Cover and Land Use in the Lobo River Watershed Upstream of Nibéhibé (Center-West of Côte d’Ivoire)

Abstract

From medium-resolution satellite images (Landsat TM, ETM+ and OLI), the spatial dynamics of land cover and land use are highlighted. The objective of this study is to quantify the evolution of land use in the watershed of the Lobo River upstream of Nibéhibé between 1986 and 2019 in order to analyze the impacts of human activities on the landscape. The study method was based, on the one hand, on the processing of satellite images, for the analysis of the dynamics of land use and, on the other hand, on the CA-Markov model, for the prediction of land use by 2050. It emerged from this study that the land use maps produced made it possible to highlight the spatio-temporal dynamics of land use on the basin. For the period from 1986 to 2019, there is a decrease in the area of forests in favor of built-bare ground and crops and fallows. A land use scenario for the years 2019 and 2050 was simulated with an accuracy of 87.11%. The regressive trend in forests seems to continue in the future with current land use practices.

Land Use Dynamics in the Department of Séguéla, Northwestern Côte D’Ivoire

“…This leads to an increase in agricultural land and a loss of natural vegetation. These same observations were made by [7] in their respective studies of the Lobo River watershed in Nibehibe and the RAMSAR of Grand-Bassam. Indeed, projections made according to the predict a population of 597,680 inhabitants in 2050, which is more than double the current population of the department of Seguela.…”

“…These confusions could be explained by the heterogeneity of the study area. Variation in woody cover and the passage of bushfires provide a diversity of spectral signatures relatively close to certain formations during the dry season ( [7] [21] [22] [23]), these authors have conducted similar studies to ours in different areas and have also reported these difficulties. They argue that, the confusions are due to a similarity of spectral responses of some woody formations.…”

“…We can therefore ask ourselves about the spatial translation of this landscape degradation. Land use changes therefore have a direct impact on land use and on the landscape configuration of this environment [7]. Given the worrying situation and the importance of agriculture in the Ivorian economy, studies must be undertaken to provide solutions to this problem.…”

“…This model has in fact been used by other authors [8] [9] [10]. To conduct such a study, it is important to use reliable quantitative and qualitative data [7]. To this end, satellite imagery has become an excellent source of wide-area data revealing the historical and intra-seasonal dynamics of crop performance, as well as agricultural yield under the influence of local growing conditions combined with current weather patterns.…”

The spatiotemporal evolution and impact of green land use efficiency in resource-based cities in the yellow river basin under the background of sustainable development

“…The YRB is the geographical and ecological area affected by the Yellow River system from its source to the sea (Kouassi et al, 2020;Jian et al, 2022). The mean altitude of the western Heyuan region is over 4000 m, consisting of plenty of high-mountains, with year-round snow covering; The altitude of the central region is loess landform, with serious soil erosion; The east is mainly composed of the Yellow River alluvial plain (Hai-Kun et al, 2020;WangHuang et al, 2021;Zhu et al, 2022).…”