Agricultural system sustainability is influenced by different factors related to local agricultural structure. The impact of these factors on the farm functionality may provide an estimate, albeit crude, of the agricultural system dynamism and weaknesses. The paper proposes a tool useful for territory planning and agricultural policies programs to assess the viability of an agricultural system in Developing Countries, focused on a farm scale. The methodology is based on some agricultural variables affecting farm functionality and stability. The analysis was applied to the Marjayoun Plain, a Lebanese agricultural enclave. The results clearly disclose the existence of some vulnerability areas in the Plain but also some positive elements in terms of sustainability. The results are mapped by Geographical Information Systems tools.
Keywords: Sustainability, farm resilience, food security, Geographical Information System, PCA, Lebanon