Abstract
Using a newly developed model approach and combining it with remote sensing, population, and climate data, first insights are provided into how local diets, urbanisation, and climate change relates to local urban food self-sufficiency. In plain terms, by utilizing the global peri-urban (PU) food production potential approximately 1bn urban residents (30% of global urban population) can be locally nourished, whereby further urbanisation is by far the largest pressure factor on PU agriculture, followed by a change of diets, and climate change. A simple global food transport model which optimizes transport and neglects differences in local emission intensities indicates that CO2 emissions related to food transport can be reduced by a factor of 10.
Highlights
Using a newly developed model approach and combining it with remote sensing, population, and climate data, first insights are provided into how local diets, urbanisation, and climate change relates to local urban food self-sufficiency
By utilizing the global peri-urban food production potential approximately 1bn urban residents (30% of global urban population) can be locally nourished, whereby further urbanisation is by far the largest pressure factor on peri-urban agriculture, followed by a change of diets, and climate change
peri-urban i (PU) agriculture could be extensified around North-American cities, it is in general not desirable to convert all natural areas into farmlands, as this would mobilize even more greenhouse gas emissions from land conversion and the subsequent agricultural production
Summary
Hungry Cities: how local food self-sufficiency relates to climate change, diets, and urbanisation.
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