Estimating soil erosion and identifying erosion hotspots for conservation priority in Bidara watershed, upper catchment of Lake Ziway, central Rift Valley of Ethiopia

Authors

  • Melese Abula
  • Kebede Wolka
  • Mikias Mikias

DOI:

https://doi.org/10.20372/JFNR-hu/2025.1208

Keywords:

Erosion risk; Hotspot area; Slope; Conservation priority; Land degradation

Abstract

Soil erosion poses a global challenge on the environment and agriculture. Understanding soil loss in a specific watershed could assist in planning effective conservation measures. The objective of this study was to estimate annual soil loss, identify erosion hot-spots, and prioritize management strategies using Revised Universal Soil Loss Equation with Geographic Information System and Remote Sensing. Meteorology record (rainfall), lab analysis of soil properties, digital elevation model analysis of topography, normalized difference vegetation index-based land cover analysis, and field observation of conservation practices were inputs of the model. In the watershed, the annual soil loss ranged from 0–1129.47 t ha-1 yr-1, surpassing the tolerable limit. Approximately 74.6% of the study area exhibited low to moderate soil loss (<20 t ha-1 yr-1), while 25.4% faced high to extremely severe erosion (>20 t ha-1 yr-1). Upstream regions were identified as areas with high soil erosion risk mainly due to cultivation and grazing on steep slopes. The areas with >20 t ha-1 yr-1 soil loss require immediate, intensive and integrated soil and water conservation measures including bunds, terraces and tree planting. Implementation of soil and water conservation measures are required to reduce erosion particularly in the highly susceptible southern parts of the watershed. Implementing contour plowing, grass strips and bunds can reduce erosion in areas experiencing low erosion (<10 ha-1 yr-1). Mapping erosion hotspots provide valuable insights into the development and execution of effective and sustainable conservation plans. Planners and decision makers should prioritize implementation of integrated soil and conservation measures in areas with intolerable erosion.

References

Adugna, A., Abegaz, A., & Cerdà, A. J. S. E. D. (2015). Soil erosion assessment and control in Northeast Wollega, Ethiopia. Solid Earth Discussions, 7(4), 3511-3540.

Aga, A.O., Chane, B. and Melesse, A.M., 2018. Soil erosion modelling and risk assessment in data scarce rift valley lake regions, Ethiopia. Water, 10(11), p.1684. https://doi.org/10.3390/w10111684

Ahmed, B., Kamruzzaman, M. D., Zhu, X., Rahman, M. S., & Choi, K. (2013). Simulating land cover changes and their impacts on land surface temperature in Dhaka, Bangladesh. Remote sensing, 5(11), 5969-5998.

Ali, S. A., & Hagos, H. (2016). Estimation of soil erosion using USLE and GIS in Awassa Catchment, Rift valley, Central Ethiopia. Geoderma Regional, 7(2), 159-166. https://doi.org/10.1016/j.geodrs.2016.03.005

Belay, T., & Mengistu, D. A. (2021). Impacts of land use/land cover and climate changes on soil erosion in Muga watershed, Upper Blue Nile basin (Abay), Ethiopia. Ecological Processes, 10, 1-23.

Benavidez, R., Jackson, B., Maxwell, D., & Norton, K. (2018). A review of the (Revised) Universal Soil Loss Equation ((R) USLE): With a view to increasing its global applicability and improving soil loss estimates. Hydrology and Earth System Sciences, 22(11), 6059-6086.

Bewket, W., & Teferi, E. (2009). Assessment of soil erosion hazard and prioritization for treatment at the watershed level: case study in the Chemoga watershed, Blue Nile basin, Ethiopia. Land degradation & development, 20(6), 609-622.

Bhattacharyya, D., Mirihana Arachchilage, G., & Basu, S. (2016). Metal cations in G-quadruplex folding and stability. Frontiers in chemistry, 4, 38.

Brady, N. C., Weil, R. R., & Weil, R. R. (2008). The nature and properties of soils (Vol. 13, pp. 662-710). Upper Saddle River, NJ: Prentice Hall.

Borrelli, P., Robinson, D.A., Panagos, P., Lugato, E., Yang, J.E., Alewell, C., Wuepper, D., Montanarella, L. and Ballabio, C., 2020. Land use and climate change impacts on global soil erosion by water (2015-2070). Proceedings of the National Academy of Sciences, 117(36), pp.21994-22001. https://doi.org/10.1073/pnas.2001403117

Dabral, P. P., Baithuri, N., & Pandey, A. (2008). Soil erosion assessment in a hilly catchment of North Eastern India using USLE, GIS and remote sensing. Water Resources Management, 22, 1783-1798.

Dangiso, Y. and Wolka, K., 2024. Fanya Juu terraces improve soil properties of cultivated land in erosion-prone semi-arid area of Ethiopia. Scientific Reports, 14(1), p.25485.

Desta, G., & Hurni, H. (2011). Farmers' participatory soil erosion assessment and soil conservation improvement: application of local erosion indicators.

Eekhout, J. P., & de Vente, J. (2022). Global impact of climate change on soil erosion and potential for adaptation through soil conservation. Earth-Science Reviews, 226, 103921. https://doi.org/10.1016/j.earscirev.2022.103921

Farhan, Y., Zregat, D., & Farhan, I. (2013). Spatial estimation of soil erosion risk using RUSLE approach, RS, and GIS techniques: a case study of Kufranja watershed, Northern Jordan. Journal of Water Resource and Protection, 5(12), 1247.

Fenta, A.A., Tsunekawa, A., Haregeweyn, N., Tsubo, M., Yasuda, H., Kawai, T., Ebabu, K., Berihun, M.L., Belay, A.S. and Sultan, D., 2021. Agroecology-based soil erosion assessment for better conservation planning in Ethiopian river basins. Environmental research, 195, p.110786.

Fenta, H.M., Aynalem, D.W., Malmquist, L., Haileslassie, A., Tilahun, S.A., Barron, J., Adem, A.A., Adimassu, Z., Zimale, F.A. and Steenhuis, T.S., 2024. A critical analysis of soil (and water) conservation practices in the Ethiopian Highlands: Implications for future research and modeling. Catena, 234, p.107539. https://doi.org/10.1016/j.catena.2023.107539

Gadisa, N. and Midega, T., 2021. Soil and water conservation measures in Ethiopia: importance and adoption challenges. World Journal of Agricultural & Soil Science, 6(3).

Gebregergs, H.M. 2018. Sustainability of land and water resources in the marginal grabens of Northern Ethiopia's Rift Valley. PhD diss., Ghent University.

Girmay, G., Moges, A., & Muluneh, A. (2020). Estimation of soil loss rate using the USLE model for Agewmariayam Watershed, northern Ethiopia. Agriculture & Food Security, 9, 1-12.

Gitas, I. Z., Douros, K., Minakou, C., Silleos, G. N., & Karydas, C. G. (2009). Multi-temporal soil erosion risk assessment in N. Chalkidiki using a modified USLE raster model. EARSel eproceedings, 8(1), 40-52.

Hurni, H., 1985. Erosion-productivity-conservation systems in Ethiopia.

Hurni, H., Abate, S., Bantider, A., Debele, B., Ludi, E., Portner, B., Yitaferu, B. and Zeleke, G., 2010. Land degradation and sustainable land management in the highlands of Ethiopia.

Husen, D., Esimo, F. and Getechew, F., 2017. Effects of soil bund on soil physical and chemical properties in Arsi Negelle woreda, Central Ethiopia. African Journal of Environmental Science and Technology, 11(10), 509-516.

Hu, X., Næss, J. S., Iordan, C. M., Huang, B., Zhao, W., & Cherubini, F. (2021). Recent global land cover dynamics and implications for soil erosion and carbon losses from deforestation. Anthropocene, 34, 100291. https://doi.org/10.1016/j.ancene.2021.100291

Ighodaro, I. D., Lategan, F. S., & Yusuf, S. F. (2013). The impact of soil erosion on agricultural potential and performance of Sheshegu community farmers in the Eastern Cape of South Africa. Journal of Agricultural Science, 5(5), 140.

Jensen, J. R. (2009). Remote sensing of the environment: An earth resource perspective 2/e. Pearson Education India.

Karamage, F., Zhang, C., Ndayisaba, F., Shao, H., Kayiranga, A., Fang, X., Nahayo, L., Muhire Nyesheja, E. and Tian, G., 2016. Extent of cropland and related soil erosion risk in Rwanda. Sustainability, 8(7), p.609.

Keesstra, S., Mol, G., De Leeuw, J., Okx, J., De Cleen, M., & Visser, S. (2018). Soil-related sustainable development goals: Four concepts to make land degradation neutrality and restoration work. Land, 7(4), 133.

Kim, J. B., Saunders, P., & Finn, J. T. (2005). Rapid assessment of soil erosion in the Rio Lempa Basin, Central America, using the universal soil loss equation and geographic information systems. Environmental Management, 36, 872-885.

Kouli, M., Soupios, P., & Vallianatos, F. (2009). Soil erosion prediction using the revised universal soil loss equation (RUSLE) in a GIS framework, Chania, Northwestern Crete, Greece. Environmental geology, 57(3), 483-497.

Miller, H.G. and Singh, V., 1994. Potential field tilt—a new concept for location of potential field sources. Journal of applied Geophysics, 32(2-3), pp.213-217.

Moisa, M. B., Dejene, I. N., Hirko, O., & Gemeda, D. O. 2022. Impact of deforestation on soil erosion in the highland areas of western Ethiopia using geospatial techniques: a case study of the Upper Anger watershed. Asia-Pacific Journal of Regional Science, 6(2), 489-514.

Morgan R.P.C. 2005. Soil erosion and conservation, Third edition. National soil resource institute.

Mukanov, Y., Chen, Y., Baisholanov, S., Amanambu, A.C., Issanova, G., Abenova, A., Fang, G. and Abayev, N., 2019. Estimation of annual average soil loss using the Revised Universal Soil Loss Equation (RUSLE) integrated in a Geographical Information System (GIS) of the Esil River basin (ERB), Kazakhstan. Acta Geophysica, 67, pp.921-938.

Negasa, D.J. and Goshime, B., 2024. Evaluation of surface runoff and sedimentation into the Lake Ziway from selected land cover types, central rift valley of Ethiopia. Journal of Hydrology: Regional Studies, 51, p.101648. https://doi.org/10.1016/j.ejrh.2023.101648

Nigatu, A. (2014). Impact of land use land cover change on soil erosion risk: The case of Denki River catchment of Ankober Woreda. Addis Ababa University.

Pesaran, M. H., Shin, Y., & Smith, R. P. (1999). Pooled mean group estimation of dynamic heterogeneous panels. Journal of the American statistical Association, 94(446), 621-634.

Pimentel, D. 2006. Soil erosion: a food and environmental threat. Environ Dev Sustain 8:119–137, 2006.

Pimentel, D., & Burgess, M. (2013). Soil erosion threatens food production. Agriculture, 3(3), 443-463.

Prasannakumar, V., Vijith, H., Geetha, N., & Shiny, R. (2011). Regional scale erosion assessment of a sub-tropical highland segment in the Western Ghats of Kerala, South India. Water resources management, 25, 3715-3727.

Rabia, A. H. (2012, July). Mapping soil erosion risk using RUSLE, GIS and remote sensing techniques. In The 4th international congress of ECSSS, EUROSOIL, Bari, Italy (pp. 1-15).

Rao, C. V., Ashenafi, T., & Aminnedu, E. (2014). Erosion risk identification study using RUSLE model in G. Madugula Mandal, Visakhapatnam District, AP, India. Eur. Acad. Res, 2, 12246-12260.

Renard, K.G., Foster, G.R., Weesies, G.A., McCool, D.K., Yoder, D.C. 1997. Predicting soil erosion by water: a guide to conservation planning with the revised universal soil loss equation (RUSLE). Agriculture Handbook No. 703.

Rizeei, H. M., Saharkhiz, M. A., Pradhan, B., & Ahmad, N. (2016). Soil erosion prediction based on land cover dynamics at the Semenyih watershed in Malaysia using LTM and USLE models. Geocarto international, 31(10), 1158-1177.

Rodrigo-Comino, J., Taguas, E., Seeger, M. and Ries, J.B., 2018. Quantification of soil and water losses in an extensive olive orchard catchment in Southern Spain. Journal of Hydrology, 556, pp.749-758.

Samuel, J., Rao, C.R., Raju, B.M.K., Rao, K.V., Rejani, R., Dupdal, R., Sharma, K.L. and Maheshwari, M., 2014. Economic Implications of Soil Erosion: A methodological framework. Life sciences leaflets, 53, pp.22-30.

Tripathi, M. P., Panda, R. K., & Raghuwanshi, N. S. (2003). Identification and prioritisation of critical sub-watersheds for soil conservation management using the SWAT model. Biosystems Engineering, 85(3), 365-379.

Van der Knijff, J. M., Jones, R. J. A., & Montanarella, L. (2000). Soil erosion risk assessment in Europe.

Van Oost, K., Van Muysen, W., Govers, G., Deckers, J., & Quine, T. A. (2005). From water to tillage erosion dominated landform evolution. Geomorphology, 72(1-4), 193-203.

Williams, J.D., Wilkins, D.E., Douglas Jr, C.L. and Rickman, R.W., 2000. Mow-plow crop residue management influence on soil erosion in north-central Oregon. Soil and Tillage Research, 55(1-2), pp.71-78.

Wischmeier, W. H., & Smith, D. D. (1978). Predicting rainfall erosion losses: a guide to conservation planning (No. 537). Department of Agriculture, Science and Education Administration.

Woldesenbet, A.B., Wudmatas, S.D., Denboba, M.A. and Gebremariam, A.G., 2020. Enset-based land use land cover change detection and its impact on soil erosion in Meki river watershed, Western Lake Ziway Sub-Basin, Central Rift Valley of Ethiopia. Environmental Systems Research, 9, pp.1-23. https://doi.org/10.1186/s40068-020-00198-x

Wolka, K., Biazin, B., Martinsen, V., & Mulder, J. (2021). Soil and water conservation management on hill slopes in Southwest Ethiopia. I. Effects of soil bunds on surface runoff, erosion and loss of nutrients. Science of The Total Environment, 757, 142877. https://doi.org/10.1016/j.scitotenv.2020.142877

Wolka, K., Lemma, A.M. and Tadesse, M., 2024. Evaluating the impacts of area closure on soil properties in south central highland of Ethiopia. Heliyon.

Wolka, K., Tadesse, H., Garedew, E., and Yimer, F. 2015. Soil erosion risk assessment in the Chaleleka wetland watershed, Central Rift Valley of Ethiopia. Environmental Systems Research 4, no. 1: 1-12, 2015.

Zakerinejad, R., & Maerker, M. (2015). An integrated assessment of soil erosion dynamics with special emphasis on gully erosion in the Mazayjan basin, southwestern Iran. Natural Hazards, 79(Suppl 1), 25-50.

Zerihun, M., Mohammedyasin, M. S., Sewnet, D., Adem, A. A., & Lakew, M. (2018). Assessment of soil erosion using RUSLE, GIS and remote sensing in NW Ethiopia. Geoderma regional, 12, 83-90. https://doi.org/10.1016/j.geodrs.2018.01.002

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Published

2025-07-11

How to Cite

Estimating soil erosion and identifying erosion hotspots for conservation priority in Bidara watershed, upper catchment of Lake Ziway, central Rift Valley of Ethiopia. (2025). Journal of Forestry and Natural Resources, 4(1), 1-15. https://doi.org/10.20372/JFNR-hu/2025.1208

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