Thirty years of land cover and fraction cover changes over the Sudano-Sahel using landsat time series
- Author
- Niels Souverijns, Marcel Buchhorn, Stéphanie Horion, Rasmus Fensholt, Hans Verbeeck (UGent) , Jan Verbesselt, Martin Herold, Nandin-Erdene Tsendbazar, Paulo N. Bernardino, Ben Somers and Ruben Van De Kerchove
- Organization
- Project
- Abstract
- Historical land cover maps are of high importance for scientists and policy makers studying the dynamic character of land cover change in the Sudano-Sahel, including anthropogenic and climatological drivers. Despite its relevance, an accurate high resolution record of historical land cover maps is currently lacking over the Sudano-Sahel. In this study, 30 m resolution historically consistent land cover and cover fraction maps are provided over the Sudano-Sahel for the period 1986–2015. These land cover/cover fraction maps are achieved based on the Landsat archive preprocessed on Google Earth Engine and a random forest classification/regression model, while historical consistency is achieved using the hidden Markov model. Using these historical maps, a multitude of variability in the dynamic Sudano-Sahel region over the past 30 years is revealed. On the one hand, Sahel-wide cropland expansion and the re-greening of the Sahel is observed in the discrete land cover classification. On the other hand, subtle changes such as forest degradation are detected based on the cover fraction maps. Additionally, exploiting the 30 m spatial resolution, fine-scale changes, such as smallholder or subsistence farming, can be detected. The historical land cover/cover fraction maps presented in this study are made available via an open-access platform.
- Keywords
- cavelab, Landsat, land cover classification, cover fractions, remote sensing, Sahel, Sudano-Sahel, random forest, VEGETATION TRENDS, FOREST COVER, ENVIRONMENTAL-CHANGE, INDEX, MALI, CLASSIFICATION, PERFORMANCE, COMPOSITES, DYNAMICS, SAVANNA
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8682333
- MLA
- Souverijns, Niels, et al. “Thirty Years of Land Cover and Fraction Cover Changes over the Sudano-Sahel Using Landsat Time Series.” REMOTE SENSING, vol. 12, no. 22, 2020, doi:10.3390/rs12223817.
- APA
- Souverijns, N., Buchhorn, M., Horion, S., Fensholt, R., Verbeeck, H., Verbesselt, J., … Van De Kerchove, R. (2020). Thirty years of land cover and fraction cover changes over the Sudano-Sahel using landsat time series. REMOTE SENSING, 12(22). https://doi.org/10.3390/rs12223817
- Chicago author-date
- Souverijns, Niels, Marcel Buchhorn, Stéphanie Horion, Rasmus Fensholt, Hans Verbeeck, Jan Verbesselt, Martin Herold, et al. 2020. “Thirty Years of Land Cover and Fraction Cover Changes over the Sudano-Sahel Using Landsat Time Series.” REMOTE SENSING 12 (22). https://doi.org/10.3390/rs12223817.
- Chicago author-date (all authors)
- Souverijns, Niels, Marcel Buchhorn, Stéphanie Horion, Rasmus Fensholt, Hans Verbeeck, Jan Verbesselt, Martin Herold, Nandin-Erdene Tsendbazar, Paulo N. Bernardino, Ben Somers, and Ruben Van De Kerchove. 2020. “Thirty Years of Land Cover and Fraction Cover Changes over the Sudano-Sahel Using Landsat Time Series.” REMOTE SENSING 12 (22). doi:10.3390/rs12223817.
- Vancouver
- 1.Souverijns N, Buchhorn M, Horion S, Fensholt R, Verbeeck H, Verbesselt J, et al. Thirty years of land cover and fraction cover changes over the Sudano-Sahel using landsat time series. REMOTE SENSING. 2020;12(22).
- IEEE
- [1]N. Souverijns et al., “Thirty years of land cover and fraction cover changes over the Sudano-Sahel using landsat time series,” REMOTE SENSING, vol. 12, no. 22, 2020.
@article{8682333,
abstract = {{Historical land cover maps are of high importance for scientists and policy makers studying the dynamic character of land cover change in the Sudano-Sahel, including anthropogenic and climatological drivers. Despite its relevance, an accurate high resolution record of historical land cover maps is currently lacking over the Sudano-Sahel. In this study, 30 m resolution historically consistent land cover and cover fraction maps are provided over the Sudano-Sahel for the period 1986–2015. These land cover/cover fraction maps are achieved based on the Landsat archive preprocessed on Google Earth Engine and a random forest classification/regression model, while historical consistency is achieved using the hidden Markov model. Using these historical maps, a multitude of variability in the dynamic Sudano-Sahel region over the past 30 years is revealed. On the one hand, Sahel-wide cropland expansion and the re-greening of the Sahel is observed in the discrete land cover classification. On the other hand, subtle changes such as forest degradation are detected based on the cover fraction maps. Additionally, exploiting the 30 m spatial resolution, fine-scale changes, such as smallholder or subsistence farming, can be detected. The historical land cover/cover fraction maps presented in this study are made available via an open-access platform.}},
articleno = {{3817}},
author = {{Souverijns, Niels and Buchhorn, Marcel and Horion, Stéphanie and Fensholt, Rasmus and Verbeeck, Hans and Verbesselt, Jan and Herold, Martin and Tsendbazar, Nandin-Erdene and Bernardino, Paulo N. and Somers, Ben and Van De Kerchove, Ruben}},
issn = {{2072-4292}},
journal = {{REMOTE SENSING}},
keywords = {{cavelab,Landsat,land cover classification,cover fractions,remote sensing,Sahel,Sudano-Sahel,random forest,VEGETATION TRENDS,FOREST COVER,ENVIRONMENTAL-CHANGE,INDEX,MALI,CLASSIFICATION,PERFORMANCE,COMPOSITES,DYNAMICS,SAVANNA}},
language = {{eng}},
number = {{22}},
pages = {{21}},
title = {{Thirty years of land cover and fraction cover changes over the Sudano-Sahel using landsat time series}},
url = {{http://doi.org/10.3390/rs12223817}},
volume = {{12}},
year = {{2020}},
}
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