Impact of Climate Change on Rainfall Erosivity in Nigeria

  • Olayiwola A. Akintola WMA dept, FUOYE
  • Samuel O. Akande Federal University Oye Ekiti, Federal University of Technology, Akure
  • Obianuju C. Emmanuel National Horticultural Research Institute, Ibadan, Nigeria
  • Opeyemi S. Sajo Joseph Ayo Babalola University, Ikeji-Arakeji, Osun State, Nigeria.
  • Ayoola O. Oluwadare lizade University Ilara-Mokin, Ondo state, Nigeria
  • Olabanji O. Olajire Federal University of Technology, Akure, Ondo State, Nigeria

Abstract

Nigeria, like many other countries, is vulnerable to the effects of climate change. This study investigated the effects of climate change on rainfall erosivity in Nigeria. Changes in rainfall patterns, such as increased intensity or duration, can significantly affect erosivity. In this study, rainfall data spanning a period of 62 years, obtained from the website archive of the Climate Research Unit-Time Series v4.3 (CRU-TS v4.3) from the University of East Anglia, United Kingdom, were used to compute rainfall erosivity indices for 46 selected stations in Nigeria, across five agroecological zones of Nigeria. The processed rainfall data for the selected locations were used to develop rainfall erosivity map for Nigeria. The erosivity map developed was compared with the one produced in 2005. Values of rainfall erosivity indices ranged from 30.92 (indicating low erosion risk) in Benin City to 85.81 (signifying very severe erosion risk) in Potiskum. Notably, the Southwest agroecological zone, previously categorized as having low erosion risk, has now transitioned to moderate erosion risk zone. Meanwhile, the Southeast and Central agroecological zones persist in the moderate erosion risk category, while the Northwest and Northeast agroecological zones are predominantly classified as severe erosion risk zones. Findings of this study can improve understanding of the threats posed by climate change to Nigerian soils. This information will help in developing strategies to mitigate soil erosion and ensure sustainable land management practices.

Author Biographies

Samuel O. Akande, Federal University Oye Ekiti, Federal University of Technology, Akure
Center for Space Research and Application, Federal University of Technology, Akure, Ondo State, Nigeria
Obianuju C. Emmanuel, National Horticultural Research Institute, Ibadan, Nigeria
Farming Systems Research Programme, National Horticultural Research Institute, Ibadan, Nigeria; Research Scientist
Opeyemi S. Sajo, Joseph Ayo Babalola University, Ikeji-Arakeji, Osun State, Nigeria.
College of Agriculture and Natural Sciences, Joseph Ayo Babalola University, Ikeji-Arakeji, Osun State, Nigeria; Lecturer I
Ayoola O. Oluwadare, lizade University Ilara-Mokin, Ondo state, Nigeria
Department of Physical and Chemical Sciences, Elizade University Ilara-Mokin, Ondo state, Nigeria; Senior Lecturer
Olabanji O. Olajire, Federal University of Technology, Akure, Ondo State, Nigeria
Center for Space Research and Application, Federal University of Technology, Akure, Ondo State, Nigeria

References

Chen, F., Hu, H., Pan, D., Wang, J., Zhang, H., & Pan, Z. (2023). Distribution Characteristics of Rainfall Erosivity in Jiangsu Coastal Areas. Agronomy, 13(7). https://doi.org/10.3390/agronomy13071829

Dash, S. S., & Maity, R. (2023). Effect of climate change on soil erosion indicates a dominance of rainfall over LULC changes. Journal of Hydrology: Regional Studies, 47(April), 101373. https://doi.org/10.1016/j.ejrh.2023.101373

Denis, M. K. A., & Toyin, A. O. (2014). Estimation of soil erodibility and erosivity of rainfall patterns in Njala land resource area of southern Sierra Leone. Research Journal of Agricultural Sciences, 5(2), 163–167.

Ezemonye, M., & Emeribe, C. (2012). Rainfall Erosivity in Southeastern Nigeria. Ethiopian Journal of Environmental Studies and Management, 5(2), 112-122–112–122. https://doi.org/10.4314/EJESM.V5I2.1

Fournier, F. (1960). Climat et érosion : la relation entre l’érosion du sol par l’eau et les précipitations atmosphériques.

Nkwunonwo, U. C., Okeke, F. I., Ebinne, E. S., & Chiemelu, N. E. (2020). Free, open, quantitative and adaptable digital soil map data and database for Nigeria. Data in Brief, 31(June), 105941. https://doi.org/10.1016/j.dib.2020.105941

Nkwunonwo, U., & Okeke, F. (2013). GIS-based production of digital soil map for Nigeria. Ethiopian Journal of Environmental Studies and Management, 6(5). https://doi.org/10.4314/ejesm.v6i5.7

Nwankwoala, H.O, Igbokwe, T., & and Orluchukwu, J. . (2022). Nwankwoala et al., 2022.pdf (pp. 30–38). Journal of e-Science Letters. https://doi.org/http://dx.doi.org/10.46890/SL.2022.v03i02.005

Obiora-Okeke, O. A., Adewumi, J. R., & Ojo, O. M. (2021). Impact of Climate Change on Runoff Prediction in Ogbese River Watershed. FUOYE Journal of Engineering and Technology, 6(4), 392–396. https://doi.org/10.46792/fuoyejet.v6i4.721

Oduro-Afriyie, K. (1996). Rainfall erosivity map for Ghana. Geoderma, 74(1–2), 161–166. https://doi.org/10.1016/S0016-7061(96)00054-7

Ogedengbe, K., Akintola, O., & Idowu, O. (2005). Development Of Rainfall Erosivity Map For Nigeria. Global Journal of Pure and Applied Sciences, 11(2). https://doi.org/10.4314/GJPAS.V11I2.16495

Pal, S. C., & Chakrabortty, R. (2022). Climate Change Impact on Soil Erosion in sub-tropical Environment. 22(November), 140. https://doi.org/10.1007/978-3-031-15721-9

Pal, S. C., Chakrabortty, R., Towfiqul Islam, A. R. M., Roy, P., Chowdhuri, I., Saha, A., Islam, A., Costache, R., & Alam, E. (2023). Land use and climate change-induced soil erosion mapping in a sub-tropical environment. Geomatics, Natural Hazards and Risk, 14(1). https://doi.org/10.1080/19475705.2023.2270129

Shaib, B., Aliyu, A., Bakshi, J. S., & Nigeria. Department of Agricultural Sciences. (1997). Nigeria : National agricultural research strategy plan 1996-2010. Department of Agricultural Sciences, Federal Ministry of Agriculture and Natural Resources,.

Suif, Z., Razak, M. A. A. A., & Ahmad, N. (2018). Predicting of soil erosion with regarding to rainfall erosivity and soil erodibility. AIP Conference Proceedings, 1930(February). https://doi.org/10.1063/1.5022948

Uber, M., Haller, M., Brendel, C., Hillebrand, G., & Hoffmann, T. (2023). Past , present and future rainfall erosivity in Central Europe based on convection-permitting climate simulations. May, 1–30.

Ufoegbune, G. C., Bello, N. J., Ojekunle, Z. O., Orunkoye, a R., Eruola, a O., & Amori, a a. (2011). Rainfall Erosivity Pattern of Ogun River Basin Area ( Nigeria ) using Modified Fournier Index. European Water, 35(July 2015), 23–29.

Xiao, Y., Yin, S., Yu, B., Fan, C., Wang, W., & Xie, Y. (2023). The most extreme rainfall erosivity event ever recorded in China up to 2022: the 7.20 storm in Henan Province. Hydrology and Earth System Sciences, 27(24), 4563–4577. https://doi.org/10.5194/hess-27-4563-2023

Published
2024-07-01