Local food crop production can fulfil demand for less than one-third of the population

Pekka Kinnunen*, Joseph H. A. Guillaume, Maija Taka, Paolo D'Odorico, Stefan Siebert, Michael J. Puma, Mika Jalava, Matti Kummu*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

634 Lataukset (Pure)

Abstrakti

The distance between the origin and end-point of food supply chains, and the ‘localness’ of food systems, are key considerations of many narratives associated with sustainability. Yet, information on the minimum distance to food crops is still scarce at the global level. Using an optimization model based on ‘foodsheds’ (that is, self-sufficient areas with internal dependencies), we calculate the potential minimum distance between food production and consumption for six crop types around the world. We show that only 11–28% of the global population can fulfil their demand for specific crops within a 100-km radius, with substantial variation between different regions and crops. For 26–64% of the population, that distance is greater than 1,000 km. Even if transnational foodsheds were in place, large parts of the globe would still depend on trade to feed themselves. Although yield gap closure and food loss reductions could favour more local food systems, particularly in Africa and Asia, global supply chains would still be needed to ensure an adequate and stable food supply.
AlkuperäiskieliEnglanti
Sivut229-237
Sivumäärä9
JulkaisuNature food
Vuosikerta1
Numero4
DOI - pysyväislinkit
TilaJulkaistu - 17 huhtik. 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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