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Richard G. Davies Olga Barbosa Richard A. Fuller Jamie Tratalos Nicholas Burke Daniel Lewis Philip H. Warren Kevin J. Gaston 《Urban Ecosystems》2008,11(3):269-287
The growing proportion of human populations living in urban areas, and consequent trends of increasing urban expansion and
densification fuel a need to understand how urban form and land use affect environmental quality, including the availability
of urban green spaces. Here we use Sheffield as a case study of city-wide relationships between urban green space extent,
quality (vegetation cover and tree-cover), and gradients in urban form and topography. The total area of buildings and length
of the road network are equally strong negative predictors of extent of green space, while the former predictor is a more
important negative influence upon green space quality. Elevation positively influences extent of green space but negatively
influences tree-cover. In contrast, slope of terrain positively influences green space quality and is the best predictor of
tree-cover. Overall housing density is a more important negative predictor of extent of green space and tree-cover than the
densities of individual housing types. Nevertheless, the latter are more important influences upon levels of vegetation cover.
Threshold effects of densities of different housing types suggest opportunities for optimising green space quality, with implications
for housing policy. Variation in ecological quality of green space may partly reflect different historical intensities of
industrial activity. 相似文献
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