Urban Food Supply Under Constrained Land Resources in Beijing: Potential and Optimization

Urban Farm DB summary

This study analyzed changes in Beijing's food footprint and food self-sufficiency rate over a 30-year period from 1981 to 2011. During this time, the food footprint grew from 11,800 to 29,400 km2, while the self-sufficiency rate for vegetables dropped from 59.3% to 39.0%, with significant declines also seen for fruit, grain, and edible oil. It was concluded that with proper shifts in farmland use, full utilization of temporary idle land, and the development of rooftop farming, Beijing could increase its vegetable self-sufficiency rate to 60% without significantly reducing the production of other types of local food.