The benefits and trade-offs of agricultural diversity for food security in low- and middle-income countries: A review of existing knowledge and evidence
2022
Waha, Katharina | Accatino, Francesco | Godde, Cecile | Rigolot, Cyrille | Bogard, Jessica | Domingues Santos, João Pedro | Gotor, Elisabetta | Herrero, Mario | Martin, Guillaume | Mason-D’croz, Daniel | Tacconi, Francesco | van Wijk, Mark | CSIRO Ecosystem Sciences ; CSIRO Ecosystem Sciences ; Commonwealth Scientific and Industrial Research Organisation [Australia] (CSIRO)-Commonwealth Scientific and Industrial Research Organisation [Australia] (CSIRO) | Sciences pour l'Action et le Développement : Activités, Produits, Territoires (SADAPT) ; AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Territoires (Territoires) ; AgroParisTech-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA) | Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) [Rome] (Alliance) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Cornell University [New York] | AGroécologie, Innovations, teRritoires (AGIR) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Ecole d'Ingénieurs de Purpan (INP - PURPAN) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Wageningen University and Research [Wageningen] (WUR) | Tasmanian Institute of Agriculture (TIA) ; University of Tasmania [Hobart] (UTAS) | International Livestock Research Institute [CGIAR, Nairobi] (ILRI) ; International Livestock Research Institute [CGIAR, Ethiopie] (ILRI) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Elsevier
International audience
Mostrar más [+] Menos [-]Inglés. Diversity in agricultural systems is often presented as having benefits for multiple purposes like food and nutrition security in low-and middle-income countries. Our review aims to give an overview of the strength and direction of the diversity-food security relationship as presented in research published since 2010, based on a comprehensive search in Web of Science. We present an overview and synthesize results for different spatial scales and units of observation, from individual to global and for the four dimensions of food security: availability, access, stability and utilisation. Eighty-eight of the 924 surveyed publications meet the inclusion criteria and report the direction and magnitude of 314 individual diversity-food security relationships. In almost two thirds of all cases, agricultural diversity had a positive effect on food security. In about one third of the relationships there was no effect of agricultural diversity on food security, or the results were mixed. These numbers hold for the availability, access and utilisation dimensions of food security and at individual, household and farm scales, but the number of studies was too small to draw robust conclusions on the stability dimension and at global scale. Diversity can be an important driver of food security, but the magnitude of the contribution depends on the broader socioeconomic and biophysical characteristics of the local farming system. We conclude that diversification can be a potential strategy to improve food and nutrition security. Yet, it is not a necessary characteristic of all agricultural systems at all costs especially in the presence of other strategies that can potentially achieve similar outcomes. We make several recommendations to strengthen future studies that can help identify how strongly related agricultural diversity and food security are.
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Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique