Nowadays in China, one of the most challenges of improving agri-food quality safety is that millions of fragmented and small scale farmers are organized and structured well, which is how to integrate them into the closer agri-food supply chain. The overall goal of this study is to simulate and analyze the structural evolution in agri-food supply chain by building an agent-based model of supply chain for the sake of improving the agri-food quality safety. Based on the simulation experiments, this study shows that contract transaction mode contributes to agri-food food quality safety by connecti...
