Single-family residential, mixed-family residential, mixed use, and industrial landuse when compared with urban forest, urban grass, paved urban, grass, and forested landcovers (Alberti 2007)
Forested landscapes tend to be found more often in single-family residential areas than in other land-use types, according to a 2007 paper by Marina Alberti, a professor of urban and environmental planning in the Department of Urban Design and Planning at the University of Washington. In her paper entitled Ecological Signatures: The Science of Sustainable Urban Forms in Places (19(3)), Alberti uses GIS data to identify the primary ecological signatures of urban development. As shown in her graph above (2007), an analysis of the Seattle metropolitan area shows that single-family residential (SFR) ranked high in urban forests and conserved forests but lower in impermeable paved urban surfaces (concrete and asphalt). Mixed-family residential (MFR) and mixed-use (residential and commercial zones) tended to have less forests but more urban lawns. Industrial landscapes tended to be highly paved with some grass and little forested land. As your community grows and expands with residential, commercial, or industrial properties; what impacts does that expansion mean for urban biodiversity?
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