The achievement of resilient food systems requires an integrated approach between optimal localization of productions and changes in food consumption and between local evaluations of the food system and global visions. In this regard, we developed a Food Self-Sufficiency Index. The index evaluates food self-sufficiency achievable in a study area where its community chooses between alternative suggested diets, and the food productions are relocalized using crop suitability maps. The index can be used at different geographical scales, from a single rural settlement to regional and country-level, up to worldwide. It revisits the food components of the ecological footprint and biocapacity to build a tool for supporting local institutions' decisions in food planning at different levels. In this paper, we discuss how the FSSI could help in increasing the resilience of food production and consumption systems. The paper outlines these essential points for the improvement of the food resilience of an area that aims to improve its self-sufficiency (i) Improving technical solutions, (ii) Improving the communities' involvement, (iii) Improving agro-biodiversity, and (iv) Using complex system approaches in food planning. The Food Self-Sufficiency Index is a powerful supporting decision tool to achieve all the previous goals.

实现有弹性的粮食系统需要在生产的最佳本地化和粮食消费的变化之间以及对粮食系统的当地评估和全球愿景之间采取综合方法。在这方面，我们制定了食品自给自足指数。该指数评估研究区域内可实现的粮食自给自足，社区在替代建议饮食之间进行选择，并使用作物适宜性地图重新定位粮食生产。该指数可以在不同的地理范围内使用，从单一的农村住区到区域和国家层面，再到全球范围。它重新审视了生态足迹和生物承载力的食物组成部分，以构建一个工具，以支持地方机构在不同层面进行食物规划的决策。在本文中，我们讨论了 FSSI 如何帮助提高粮食生产和消费系统的弹性。该文件概述了提高该地区粮食复原力的这些要点，旨在提高其自给率（i）改进技术解决方案，（ii）提高社区参与度，（iii）提高农业生物多样性，以及（ iv) 在食品规划中使用复杂的系统方法。粮食自给自足指数是实现所有先前目标的有力支持决策工具。(iv) 在食品规划中使用复杂的系统方法。粮食自给自足指数是实现所有先前目标的有力支持决策工具。(iv) 在食品规划中使用复杂的系统方法。粮食自给自足指数是实现所有先前目标的有力支持决策工具。