城乡居民食材消耗的多尺度地域差异及政策启示-基于烟台、兰州、新乡、九江家庭食谱的实证分析

Currently, due to China's continuous rise of international dependence on food, reducing food losses and avoiding waste has become an important way to solve the problem of the resilience of the food security system. However, thanks to the obvious variations in the dietary structure of residents in different regions, the implementation of food saving policies and regulations should pay attention to these regional differences. Thus, it is necessary to analyze the food consumption habits (especially the dietary structure or ratio) of residents in different areas. In this context, taking Yantai, Lanzhou, Xinxiang, and Jiujiang as examples, our study used a questionnaire survey to explore the differences of the food consumption and its corresponding production land demand in the four cities. The results show that: (1) There are significant regional differences between dietary structures and their corresponding consumption of land resources, and this difference is closely related to the urban natural conditions and local dietary customs. (2) The origins (global, local and domestic) of food consumption of residents in the four cities tend to be different, and such differences are relatively small in local origins but significant in global origins. Finally, based on the analysis results, the paper discusses the policy possibilities for food saving and anti-food waste. First of all, the implementation of anti-food waste policies and regulations should fully take into account the regional characteristics of residents' food consumption, in order to formulate targeted food consumption standards and dynamic monitoring systems. Secondly, in the context of global fluctuations and food security, local governments should pay more attention to the possibility of cities reserving strategic origins for local food supplies in combination with spatial planning, so as to reduce the food losses during transportation.