Journal article

Grain self-sufficiency capacity in China’s metropolitan areas under rapid urbanization: trends and regional differences from 1990 to 2015

Food security Urbanisation Grains Sufficiency China
Description

Urbanization brings significant changes to the urban food system. There is growing attention to food self-sufficiency in metropolitan areas for the concern of greenhouse gas (GHG) mitigation in food transportation. In China, grain self-sufficiency in metropolitan areas is also an important issue for grain security and involves coordination among contradictory policy goals.

Based upon a comprehensive statistical analysis of 70 metropolitan areas in mainland China, the authors investigated the regional differences in the trends of grain self-sufficiency capacity in these areas from 1990 to 2015. The findings show a trend of decline in 3/4 of metropolitan areas, mainly located in the rapidly urbanizing eastern coastal areas and in the West. The increase of self-sufficiency mainly occurred in the North, in areas either specialized in grain production or originally low in grain self-sufficiency. The enlarging contradiction of decreasing supply and rising demand explained the sharp decrease in self-sufficiency, while the increase in self-sufficiency was due to the increase in supply. Land productivity contributed more significantly than land availability to supply change. There was a tradeoff between urban expansion (rather than economic growth) and grain production in metropolitan areas. The results provide implications to future research and policy-making for grain production management in China’s metropolitan areas.

Publication Details
Volume:
11
Issue:
9
Pagination:
2468
Publication Year:
2019