China, with rice as its most important staple food, plays a significant role in the global rice economy. However, China's rice supply and demand throughout the supply chain remains poorly understood due to data inconsistencies and gaps. Here, based on a mass-balance consistent system approach and a meta-analysis of various existing data sources, we identified the plausibility and mutual consistency of different sources for each stage of the rice supply chain and mapped the flows and stocks of rice from farm to fork in China in the past two decades. The results showed that production and trade data of paddy rice on the supply side are relatively consistent, while consumption, stock, and loss and waste data on the utilization side are often uncertain. The reconciled results after error propagation for the entire rice supply chain showed that the production of rice has increased from 134 Mt to 151 Mt, while...

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