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The morphology of built up landscapes in Wallonia Belgium a classification using fractal indices Abstract The spatial pattern of built up areas within a NUTS European region Wallonia in Belgium is analysed using fractal indices Methodologically this paper illustrates the usefulness of fractal indices in measuring built up morphologies and also shows that clustering techniques have to be adapted for the non Euclidean nature of the fractal measurements An expectation maximisation algorithm EM combined with a Bayesian information criterion BIC is used Empirically we show that fractal indices partition the region into sub areas that do not correspond to “natural landscapes” but result from the history of urbanisation Urban sprawl seems to affect most communes even the remotest villages: traditional compact ribbon etc villages are transformed into more complex and heterogeneous shapes These indices seem to be useful for characterising and understanding the built landscapes as well as for modelling and planning urban realities Keywords: fractal dimension built up geometry pattern analysis peri urbanisation Belgium

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44 Pages
English

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Niveau: Supérieur, Doctorat, Bac+8
2 The morphology of built-up landscapes in Wallonia (Belgium): a classification using fractal indices 5 Abstract The spatial pattern of built-up areas within a NUTS-1 European region (Wallonia in Belgium) is analysed using fractal indices. Methodologically, this paper illustrates the 10 usefulness of fractal indices in measuring built-up morphologies, and also shows that clustering techniques have to be adapted for the non-Euclidean nature of the fractal measurements. An expectation maximisation algorithm (EM) combined with a Bayesian information criterion (BIC) is used . Empirically, we show that fractal indices partition the region into sub-areas that do not correspond to “natural landscapes” but result from 15 the history of urbanisation. Urban sprawl seems to affect most communes, even the remotest villages: traditional (compact, ribbon, etc.) villages are transformed into more complex and heterogeneous shapes. These indices seem to be useful for characterising and understanding the built landscapes, as well as for modelling and planning urban realities. 20 Keywords: fractal dimension, built-up geometry, pattern analysis peri-urbanisation, Belgium. 25

  • up surfaces

  • urban growth

  • formulation can

  • measuring built

  • rural areas

  • classification method used

  • classification using fractal

  • fractal dimension

  • all built


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