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Modelos de pegadas de carbono ecologicos e de agua estao sendo cada vez mais usado para monitorar uso pessoal e domestico dos recursos naturais. As pegadas humanas sao uma seria ameaca global e cada nacao esta olhando para as opcoes possiveis para reduzi-las pois suas consequencias sao alarmantes. Este trabalho propoe uma pegada integrada como ferramenta para avaliar os impactos ambientais diretos e indiretos da atividade humana. Com base nas definicoes das pegadas de carbono, hidrica e ecologica, um modelo empirico foi construido para a avaliacao dos impactos ambientais da producao e consumo. Neste trabalho, foi definido, pela primeira vez, o termo “pegada ambiental” como um conjunto de indicadores para acompanhar a pressao humana sobre o planeta sob ângulos diferentes, constituindo-se, assim, o Indice de Sustentabilidade Ambiental Multidimensional (ISAM). Esse indice foi construido na premissa de que nenhum indicador, por si so, e capaz de monitorar de forma abrangente o impacto humano sobre o meio ambiente; os indicadores precisam ser usados e interpretados em conjunto. Semelhancas e diferencas entre os tres indicadores sao, entao, destaque para mostrar como esses indicadores se sobrepoem, interagem e se complementam. A revisao conclui que a “pegada ambiental” e adequada para avaliar sustentabilidade. Abstract Carbon, ecological and water footprints models are increasingly being used for monitoring personal and domestic use of natural resources. These human footprints are a serious global threat and every nation is looking at the possible options to reduce it since its consequences are alarming. This work proposes an integrated footprint as a tool for assessing the direct and indirect environmental impacts from human activity. Based on the definition of carbon, water and ecological footprints, an empirical model was built for the assessment of the environmental impacts of production and consumption. In this work the term “environmental footprint” was first defined as a set of indicators to track human pressure on the planet from different angles, constituting, therefore, the Environmental Sustainability Index Multidimensional (ISAM). This index is built on the premise that no indicator by itself is able to comprehensively monitor human impact on the environment, but indicators must be used and interpreted together. Similarities and differences among the three indicators are then highlighted to show how these indicators overlap, interact, and complement each other. The review concludes that “footprint environmental” is appropriate to assess sustainability.

An integrated approach based on water, ecological and carbon footprint for tracking human pressure on the planet