Land use land cover change in the African Great Lakes Region: a spatial–temporal analysis and future predictions

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License: CC BY 4.0
Serval ID
serval:BIB_9E12BAC5EE82
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Land use land cover change in the African Great Lakes Region: a spatial–temporal analysis and future predictions
Journal
Environmental Monitoring and Assessment
Author(s)
Kayitesi Naomie M., Guzha Alphonce C., Tonini Marj, Mariethoz Gregoire
ISSN
0167-6369
1573-2959
Publication state
Published
Issued date
09/2024
Peer-reviewed
Oui
Volume
196
Number
9
Language
english
Abstract
The African Great Lakes Region has experienced substantial land use land cover change (LULCC) over the last decades, driven by a complex interplay of various factors. However, a comprehensive analysis exploring the relationships between LULCC, and its explanatory variables remains unexplored. This study focused on the Lake Kivu catchment in Rwanda, analysing LULCC from 1990 to 2020, identifying major variables, and predicting future LULC scenarios under different development trajectories. Image classification was conducted in Google Earth Engine using random forest classifier, by incorporating seasonal composites Landsat images, spectral indices, and topographic features, to enhance discrimination and capture seasonal variations. The results demonstrated an overall accuracy exceeding 83%. Historical analysis revealed significant changes, including forest loss (26.6 to 18.7%) and agricultural land expansion (27.7 to 43%) in the 1990–2000 decade, attributed to political conflicts and population movements. Forest recovery (24.8% by 2020) was observed in subsequent decades, driven by Rwanda’s sustainable development initiatives. A Multi-Layer Perceptron neural network from Land Change Modeler predicted distinct 2030 and 2050 LULC scenarios based on natural, socio-economic variables, and historical transitions. Analysis of explanatory variables highlighted the significant role of proximity to urban centers, population density, and terrain in LULCC. Predictions indicate distinct trajectories influenced by demographic and socio-economic trends. The study recommends adopting the Green Growth Economy scenario aligned with ongoing conservation measures. The findings contribute to identifying opportunities for land restoration and conservation efforts, promoting the preservation of Lake Kivu catchment’s ecological integrity, in alignment with national and global goals.
Keywords
Lake Kivu catchment, Explanatory variables, Seasonal composites, Future scenarios, Machin learning, Green growth economy
Pubmed
Web of science
Open Access
Yes
Funding(s)
University of Lausanne
Create date
11/10/2024 15:08
Last modification date
18/10/2024 16:08
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