Delineating boundaries of social-ecological systems for landscape planning: A comprehensive spatial approach

An increasing number of studies demonstrate the need of applying a social-ecological system approach for landscape planning. However, there is a lack of empirical research that operationalizes the concept of social ecological system for landscape planning through the characterization of social-ecological interactions. In this study, we develop a methodological framework to delineate the boundaries of social-ecological systems and to characterize their main social-ecological units in a spatially explicit way. Social-ecological units represent the interactions between the biophysical and socio-economic sub-systems at local scale. The methodology is structured in four phases: (1) ecological regionalization, i.e. identification and mapping of consistent ecological units based on biophysical variables; (2) socio-economic regionalization, i.e. identification and mapping of homogeneous groups of municipalities based on socio-economic variables; (3) identification of social-ecological systems boundaries and characterization of social-ecological units; and (4) validation of the social-ecological systems boundaries with key informants through participatory mapping. By applying the proposed methodological framework to three different Mediterranean cultural landscapes, we define the boundaries of social ecological systems and illustrate how social and ecological sub-systems interact at local scale. We conclude that the proposed methodological framework is useful to operationalize the concept of social-ecological systems in landscape planning.