Maize industry security in China, 2011–2020: a composite index across supply, market, technology, and environment

Background Maize industry security is defined in this study as an integrated, sustainability-oriented food-security posture of the maize sector, reflecting how basic security level, market operation situation, technological innovation capacity, and resource-environment conditions jointly shape the availability, stability, and long-term viability of maize production and use. Methods To construct a composite Maize Industry Security Index for China, data were synthesized from authoritative national