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Mitigating climate vulnerability: the crop diversification effect

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  • Ferry, Marin
  • de Montalembert, Jeanne

Abstract

Can adaptation strategies mitigate the impact of drought episodes on household food insecurity? Using longitudinal data on Malagasy rural households from 2011 to 2014 and a two-way fixed-effects model with an instrumental variable method to address endogeneity issues, this study demonstrates that crop diversification significantly reduces household food insecurity and provides mitigating benefits. Specifically, adding one additional crop reduces perceived food insecurity by 6%–8% and shortens the lean season by 20%–22% on average. Moreover, diversification helps alleviate the adverse effects of drought episodes, with cultivating 6 to 9 crops—particularly fruits and cereals—proving most effective. However, the effectiveness of diversification diminishes under severe drought conditions and varies across crop types.

Suggested Citation

  • Ferry, Marin & de Montalembert, Jeanne, 2025. "Mitigating climate vulnerability: the crop diversification effect," Ecological Economics, Elsevier, vol. 233(C).
    • Handle: RePEc:eee:ecolec:v:233:y:2025:i:c:s0921800925000515
    DOI: 10.1016/j.ecolecon.2025.108568
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    More about this item

    Keywords

    Crop diversification; Food insecurity; Drought; Adaptation strategy; Mitigating effect;
    All these keywords.

    JEL classification:

    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • I32 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - Measurement and Analysis of Poverty
    • Q18 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Policy; Food Policy; Animal Welfare Policy
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming

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