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Soil salinity assessment and coping strategies in the coastal agricultural landscape in Djilor district, Senegal

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  • Thiam, Sophie
  • Villamor, Grace B.
  • Kyei-Baffour, Nicholas
  • Matty, François

Abstract

Soil salinity remains one of the most severe environmental problems in the coastal agricultural areas in Senegal. It reduces crop yields thereby endangering smallholder farmers’ livelihood. This paper aims to investigate soil salinity pattern and relationship with some environmental factors based on 304 soil sample plots (at 0–30 cm depth) coupled with farm household survey in Djilor district, Fatick Region. Elevation, slope, groundwater depth, and normalized difference vegetation index (NDVI) values of each sample plots were extracted using the ArcGIS. Through statistical analyses, the results showed that bare land, land under fallow, rice plots and Fluvisols (soil type) registered high content of salt. Clay content, soil pH, elevation, distance to river and Fluvisols were significant factors associated with the increased salt content. Contrary to expectations, soil salinity had no relationship with groundwater depth in the study area. Ninety-six percent of the respondents were affected by salinization. Women group engaged in rice farming appeared to be more affected by soil salinity. To cope with the negative impact of soil salinity in the study area, the farmers’ strategies are the application of chemical fertilizer and manure, planting and conservation of trees, and installation of soil bunds. Smallholder farmers also expressed their need for support on adaptation and mitigation from the government or any concerned organizations involved in this environmental issue. This study provides a baseline in soil salinity assessment and helps decision makers regarding land management and salt-affected areas restoration.

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  • Thiam, Sophie & Villamor, Grace B. & Kyei-Baffour, Nicholas & Matty, François, 2019. "Soil salinity assessment and coping strategies in the coastal agricultural landscape in Djilor district, Senegal," Land Use Policy, Elsevier, vol. 88(C).
    • Handle: RePEc:eee:lauspo:v:88:y:2019:i:c:s0264837718314947
    DOI: 10.1016/j.landusepol.2019.104191
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    References listed on IDEAS

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    Cited by:

    1. Chi, Yuan & Liu, Dahai & Wang, Jing & Wang, Enkang, 2020. "Human negative, positive, and net influences on an estuarine area with intensive human activity based on land covers and ecological indices: An empirical study in Chongming Island, China," Land Use Policy, Elsevier, vol. 99(C).
    2. Thiam, Habibatou I. & Owusu, Victor & Villamor, Grace B. & Schuler, Johannes & Hathie, Ibrahima, 2024. "Farmers’ intention to adapt to soil salinity expansion in Fimela, Sine-Saloum area in Senegal: A structural equation modelling approach," Land Use Policy, Elsevier, vol. 137(C).
    3. Nguru, Wilson & Abera, Wuletawu & Ouedraogo, Issa & Chege, Christine & Kane, Babacar & Bougouma, Katiana & Mwongera, Caroline, 2023. "Spatial estimation of flood residual water cultivation (FRWC) potential for food security in Sédhiou and Tambacounda regions of Sénégal," Agricultural Water Management, Elsevier, vol. 287(C).
    4. Tharani Gopalakrishnan & Lalit Kumar, 2020. "Modeling and Mapping of Soil Salinity and its Impact on Paddy Lands in Jaffna Peninsula, Sri Lanka," Sustainability, MDPI, vol. 12(20), pages 1-15, October.

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