Articles | Volume 9, issue 3
Earth Surf. Dynam., 9, 445–462, 2021
https://doi.org/10.5194/esurf-9-445-2021
Earth Surf. Dynam., 9, 445–462, 2021
https://doi.org/10.5194/esurf-9-445-2021

Research article 31 May 2021

Research article | 31 May 2021

Interactions between deforestation, landscape rejuvenation, and shallow landslides in the North Tanganyika–Kivu rift region, Africa

Arthur Depicker et al.

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Cited articles

Aleman, J. C., Jarzyna, M. A., and Staver, A. C.: Forest extent and deforestation in tropical Africa since 1900, Nature Ecology and Evolution, 2, 26–33, https://doi.org/10.1038/s41559-017-0406-1, 2018. a, b
Baynes, E. R., Lague, D., Attal, M., Gangloff, A., Kirstein, L. A., and Dugmore, A. J.: River self-organisation inhibits discharge control on waterfall migration, Sci. Rep., 8, 1–8, https://doi.org/10.1038/s41598-018-20767-6, 2018. a, b
Bennett, G. L., Miller, S. R., Roering, J. J., and Schmidt, D. A.: Landslides, threshold slopes, and the survival of relict terrain in the wake of the Mendocino Triple Junction, Geology, 44, 363–366, https://doi.org/10.1130/G37530.1, 2016. a, b, c, d
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Brooks, S. M., Crozier, M. J., Preston, N. J., and Anderson, M. G.: Regolith stripping and the control of shallow translational hillslope failure: Application of a two-dimensional coupled soil hydrology-slope stability model, Hawke's Bay, New Zealand, Geomorphology, 45, 165–179, https://doi.org/10.1016/S0169-555X(01)00153-2, 2002. a
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We investigated how shallow landslide occurrence is impacted by deforestation and rifting in the North Tanganyika–Kivu rift region (Africa). We developed a new approach to calculate landslide erosion rates based on an inventory compiled in biased © Google Earth imagery. We find that deforestation increases landslide erosion by a factor of 2–8 and for a period of roughly 15 years. However, the exact impact of deforestation depends on the geomorphic context of the landscape (rejuvenated/relict).