Research on the Factors Influencing the Security of Grain Supply Capacity in Sichuan Province Based on PLS Structural Equation Modelling

Sichuan Province, distinguished as one of the top performers among China’s 13 main grain-producing provinces, holds unique advantages in the western region. The continuous increase in grain production lays a solid groundwork for upholding the country’s food security. Grounded in five dimensions—social, economic, technological, resource, and environmental—this article establishes a security evaluation system for the grain supply capacity of Sichuan Province, incorporating 14 specific indicators, and utilizes a PLS structural equation model to investigate the diverse factors influencing the security of Sichuan Province’s grain supply capacity. Findings reveal that social and technological advancements directly negatively affect the security of the grain supply capacity, while economic growth, environmental progress, and resource enhancement directly positively influence grain supply capacity security. It also corroborates that a sustainable grain supply capacity necessitates the harmonious development of these five facets, each being essential. As a result, strategies to safeguard the security of Sichuan Province’s grain supply capacity are put forward, aiming to offer decision-making references for strengthening and elevating Sichuan’s grain supply capability and constructing an advanced “Heavenly Granary”.