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Environmental footprint analysis of an urban community and its surrounding bioregion
Abstract
Environmental or ecological' footprints have been widely used as partial indicators of sustainability; specifically of resource consumption and waste absorption transformed in terms of the biologically productive land area required by a population. The environmental footprint of the Unitary Authority of Bath and North East Somerset (BANES) in the South West of England (UK) has been estimated in terms of global hectares (gha) required per capita. BANES has a population of about 184 870 and covers an area of 35 200 ha, of which two-thirds are on green belt' land. The UNESCO World Heritage City of Bath is the principal settlement, but there are also a number of smaller urban communities scattered among its surrounding area (hinterland' or bioregion'). The overall footprint for BANES was estimated to be 3.77 gha per capita (gha/cap), which is well above its biocapacity of 0.67 gha/cap and Earthshare' of 1.80 gha/cap. Direct energy use was found to exhibit the largest footprint component (a 31% share), followed by materials and waste (30%), food and drink (25%), transport (10%) and built land (4%), whereas the water footprint was negligibly small (1/40%) by comparison. Such data provide a baseline for assessing the Council's planning strategies for future development.