This paper is based on a research work developed over 25 years that aims to consolidate a method for making biogeographical inventories and evaluations of vegetal landscapes in mid and high latitudes. To date, the method has been applied to different ecosystems within the Iberian Peninsula, Scandinavia, Balkans, Chile, Nicaragua, Brazil. As consequence of a research stay in 2008 recorded the highest score by applying the method to a specific formation, the Mediterranean forest with Palm, Chile However, in order to assess the robustness of the method, it has been also applied to other areas. This article exposes and analyzes the overall results obtained in the area of two populations of this same formation but located in the northernmost area of their distribution limit. The methodology is based on a systematic inventory of different units along with an assessment based on natural, territorial, cultural, management and risks criteria. The results again confirm general values which, however, in this case do not reach the registered in the area of Valparaiso and Viña del Mar. However, criteria such as the territorial or mesological are still counting on big scores.