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    Setting the Scale of Sustainable Urban Form 1(10)

    Setting the Scale of Sustainable

    Urban Form

    Some scale-related problems discussed in thecontext of a Swedish urban landscape

    MATTIAS KRRHOLMArchitect, PhDDepartment of Architecture & Built Environment, LTH, LULund, SwedenTEL: +46 46 222 73 [email protected]

    AbstractIn this paper I will investigate spatial scale as one vital aspect that needs to be more

    carefully addressed in discussions on sustainable urban forms. First, I discuss problems of

    spatial scales in the light of recent urban transformations, focusing on the Malm-Lund

    region. Second, I discuss the discourse of sustainable urban forms, pointing at some scale

    related problems that need to be more carefully addressed .In the third, and main part of

    the article, I discuss plans and projects of urban development in Malm, focusing and

    elaborating on three tendencies of scale stabilisation: territorial, geometrical andhierarchical. Concluding, I suggest that if we want research on sustainable urban forms to

    inform us on how to build better urban environments, we need to think of it is as a tool for

    integrating issues and problems that formerly were specialised or sub-optimized,

    counteracting splintering urbanism; one foundational issue of such an effort would be a

    multi-scalar approach that does not handle scale as a pre-given entity.

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    In architecture, one cannot say that 2 is to 4 as

    200 is to 400

    E. Viollet-le-Duc

    1. Introduction

    The idea of applying the concept of sustainable

    development to that of urban and architectural

    form has increasingly been addressed and

    discussed by researchers, planners and architects

    during the last decade. The issue of sustainable

    urban form has, however, both in discourse and

    practice, been a problematic one, leading to

    different and contradictory results, e.g. in

    discussions for and against the compact city (Frey

    1999, Jenks & Dempsey 2005, Kaido 2005). The

    progress of the field is often quite contradictoryand complex, but nevertheless implemented in

    different guidelines and directives (Williams et. al.

    2000).

    One core issue is that of methodology. How do

    we find and define sustainable urban forms?

    How do we investigate the question? How should

    we even pose the question? To actually judge

    whether a certain urban form is sustainable or not,

    does not seem to be an easy task. To some extent

    the problem echoes the old modernistic dilemmaof function and form. Both problems are set up as

    a relationship between cause and effect, between

    urban form and outcome. I do not contest that

    there could be some stable relationships between a

    set of activities or relations agreed upon as

    sustainable, and a certain urban structure. This

    relationship is however not so easily generalized

    in terms of such dichotomies as nature-culture,

    object-subject or form/function (cf. Latour 1993).

    In this paper I will investigate spatial scale asone vital aspect that needs to be more carefully

    addressed if we are to talk about sustainable

    urban forms. I will specifically look at the scales

    at which different sustainable urban forms are

    implemented and discussed (in research as well as

    in planning). The argument of the paper is based

    on the notion that urban forms participate in the

    production of effects on different scales (they are

    multi-scalar), and that these effects might vary

    accordingly. If we want to discuss the meanings

    and effects of built form, scale is thus an issue of

    key importance. The paper uses the concept of

    scale as related to urban form, taking its cue

    primarily from urban morphology but indirectly

    also from scale as discussed in a more eclectic

    architectural discourse (by such diverse authors

    as Rasmussen 1957, Gehl 1980, Boudon 1999,

    Lawson 2001). Although the aspect of

    architectural and spatial scale has been widely

    discussed in architectural theory the actual

    impacts of built environment as analysed through

    different scales has rarely be studied (although see

    Yaneva 2005). I will here use Caniggias and

    MaffeisArchitectural Composition (being one of

    the classics within the field of urban morphology)

    to define scale as: different level of complexity

    of the components internally arranged to construct

    a whole (Caniggia & Maffei, 2001 (1979):245).

    Although my field of interest is that of an urban

    morphologist, I will use the perspective of actor-

    network theory (Latour 2005), and regard spatial

    scale as continuously produced by different

    collectives (in, what can be called, an ontology of

    becoming). The description of Caniggia & Maffei

    thus suits me fine since, components is abstractenough to include actors (and actants) of different

    sorts: social, material, political, etc.

    My urban-morphology-perspective on spatial

    scale differs from the scale analysis and theories

    developed lately, largely within the field of

    political geography (Marston 2000, Brenner 2001,

    Swyngedow 2000, Randles & Dicken 2004,

    Collinge 2005, to mention a few). Although I do

    agree with some points made in this quite

    heterogenic field of research: e.g. that scales arenot pre-given, but produced by human

    interactions, social relations and political actions

    I also think it is important to stress more heavily

    that materialities, forms, shapes, artefacts, etc. of

    different kind are indispensable co-producers of

    such scales and scale-related effects. This, in turn,

    often means that scalar outcomes are non-direct,

    unintended and even unpredictable (cf. Randles &

    Dicken 2004). Keeping this in mind, the politics

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    of space must be discussed not just by analysing

    intentions and discourses, but also by taking the

    issue of form and materiality more seriously.

    The aim of the paper is to investigate research

    and planning discourses on sustainable urban

    form, posing the question: at what scales are these

    sustainable urban forms discussed and

    implemented? First, I give a short introduction to

    the primary context of the paper: the region and

    the expanding urban landscape,1 as well as the

    discourse of sustainable urban forms. In the main

    part of the article I look at Malm and some of the

    UD projects planned there during the last decade

    in order to discuss three tendencies of scale

    stabilisation that seem to be reproduced in the

    discourses and plans that I have analysed.

    2. The scale of the urban

    landscape

    Although perhaps seldom addressed as a subject

    of its own, scale has always been one of the main

    issues of urbanity and urban form debate. The

    French architect and theorist Phillippe Boudon

    even regard it as the key concept of an

    autonomous architectural science, a field that he

    refered to as architecturology (Boudon 1999, cf.Lundequist 1999). Today regional scale seems to

    be an issue of growing importance in a much

    larger context than that of architectural research.

    The transformation of towns and cities to urban

    regional landscapes has been going on all through

    the 20th century, starting with the trends of

    suburbanization, garden cities, etc., in the

    beginning of the century. Lewis Mumford

    1 Sustainability and scale have been addressed at muchlarger scales at other places, e.g. discussing howpolitical issues can be set at a global scale,depoliticiszing or repudiating the activites taking placeat a national or local scale (Baeten 2000). Although theeffects of the built environment indeed might take us toa global level (and a network context) I constrainmyself in this paper to a regional context (See Law &Mol 2002, on different spatialites and contexts from anANT-related perspective). See also Marcotullio &McGranahan 2007 on scaling urban environmentalchallenges on both local and global levels.

    commented in the 1930s seeing how motor ways

    and railroads enabled a non-hierarchical region

    where: no single centre will, like the metropolis

    of old, become the focal point of all regional

    advantages: on the contrary the whole region

    becomes open for settlement (Mumford 2005

    (1937), p. 96). Although this transformation of the

    urban structure was noted early on, it did not

    become thoroughly conceptualised until the

    1990s (partly due to a vast number of influential

    hierarchical conceptualizations, e.g. Christallers

    central place theory, The Chicago School ring

    model, The Athens-charter zoning systems,

    NewmansDefensible Space, SCAFT). Today,

    however, we are witnessing a conceptual

    production discussing these urban transformations

    at the scale of the region in terms such as e.g.

    Zwischenstadt(Sieverts 2003),Netzstadt(Oswald

    & Baccinin 2003), citta diffusa (Boeri 2003),

    lurbanisme des reseaux (Dupuy 1991), the

    network city (Abrechts & Mandelbaum 2005), the

    regional city (Calthorpe & Fulton 2001), and

    splintering urbanism (Graham & Marvin 1998).

    These conceptualizations, and to some extent also

    mappings (Boeri 2003, Abrams & Hall 2005) of

    urban landscapes, networks and nebulae implythat regional scale is rapidly becoming an issue of

    growing importance (and where Boeri et. al. 2003,

    even plays with the idea of seeing the whole of

    Europe as an urban region). New regional

    developments, infrastructures and politics also

    affect and involve the everyday life. People

    commute more and longer, tourism is an ever-

    growing industry, and new institutions are

    established at new scale levels. In the end, this

    does of course also affect spatial planning, that hasto come to terms with a new context where

    distance has more to do with time than kilometres

    and social process such as urbanisation,

    greenbelts, investments, centres etc, seem to be

    scaled up (this planning shift has sometimes been

    refered to as shift to network planning, Hajer &

    Zonneweld 2000, Albrechts & Mandelbaum 2005,

    cf. Healy 2005). Planning and strategies for

    development are still very much treated as

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    territorial issues set within the frames of a hard-

    edged container, (Healy 2005: 151), not fully

    dealing with the fact that a lot of relations,

    problems and phenomena are more and more

    enacted on new and multiple scales. Even though

    the scale of the urban landscape is increasingly

    conceptualized and discussed by researchers as an

    empirical phenomenon, it has not yet reached its

    potential, one could argue, in more normative

    texts, in planning visions and in new ideas on how

    to build. To some extent this is also a result of

    with how planning practice is organized with

    responsibilities hierarchically divided at different

    levels of scales, often focused on intra-territorial

    issues and different fields of interest, such as an

    organization might lead to the optimisation of

    isolated elements, areas or aspects, but could have

    harder to cope with the multiple relations of the

    urban landscapes (cf. Healy 2005).

    3. Sustainable urban form in

    research

    What is sustainable architecture, sustainable urban

    design or form? InAchieving Sustainable Urban

    Form (2000), Williams et. al. conclude that

    sustainable urban forms are characterized bycompactness (in various forms), mix of uses and

    interconnected street layouts, supported by strong

    public transport networks, environmental controls

    and high standards of urban management

    (Williams et. al. p. 355.). Compactness and

    concentration of the built environment to transit

    nodes are two of the most common statements

    (and can for example also be seen in Swedish

    reports such as SOU 1997:35 and Boverket

    Vison 2009, cf. Westford 1999, 2004).

    In research on sustainable urban forms (Jabareen

    2006, Frey 1999, anthologies such as Jenks et al

    1996, Williams et al 2000, Jenks & Dempsey

    2005) there seem to be some kind of agreement on

    the themes that are relevant (summarised above).

    But what kind of forms are sustainable? Looking

    at the discourse from the perspective of

    (morphological) spatial scale, three things come to

    mind.

    First, and perhaps most striking, is the lack of

    differentiation when it comes to the notion of

    form. The key themes for sustainable urban form

    is often represented as e.g. a formless statistical

    number of density, number of uses, or distances

    (one-dimensional form), discussing some wanted

    effects characterised as sustainable, rather than the

    urban forms that could accommodate for them.

    Using Kevin Lynchs definition of urban form as:

    the spatial pattern of the large, inert, permanent

    physical objects in a city (Lynch in Jabareen

    2006:39), one can note that the notion of pattern

    or shape is seldom addressed at all in a more

    concrete manner. The differentiation of form is

    often quite weak, listing some ideal models (such

    as Jabareen listing four idealised models) rather

    than discussing different morphological aspects.

    Discourse on sustainable urban form surprisingly

    seldom takes its cue from urban morphology,

    though there are of course exceptions (notably

    Scoffman & Marat-Mendes 2000, and to some

    extent also e.g. Westford 2004 & Frey 1999). To

    illustrate the problem of neglecting form, we can

    take the example of density. Density does ofcourse fluctuate with scale, changing borders and

    perimeters of the place also changes density. Even

    within the same borders the same density or floor

    space ratio could very well represent totally

    different building typologies and ways of life (cf.

    Jenks & Dempsey 2005). For diagrams on how

    different building types relate to number of

    storeys, floor space index, and density ratio, see

    Rdberg & Johansson (1997:75), and Bergshauser

    Pont & Haupt (2007).Second, although scale is addressed, it is often

    done in a quite simplistic and hierarchical manner,

    where scales are set by administrative borders or

    typological area classifications. Furthermore, most

    discussions seem to focus either at the scale of the

    city (e.g. the compact city) or at a

    neighbourhood scale. Some look at the region, in

    discussion of e.g. polycentric versus monocentric

    models (Frey 1999, Okabe 2005). However,

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    changing scales, jumping surging scaling up and

    down, lies in the very heart of the design process.

    (Yaneva 2005). This kind of scaling (done in

    architectural practice) often take a more

    phenomenological approach, producing scales

    from the perspective of lived space: how does this

    particular building affect the skyline, the life on

    the street, the view from the park, the light in the

    rooms of the building next door, etc. Just setting

    the height or the width of the building could

    immediately affect all of these scales and of

    course many more. Sadly, this activity of scaling

    is not yet much verbalized or conceptualized in

    discourse. In what networks is this building (or

    parts of the building) an actor/actant? What roles

    does it play in different scales? Mixed uses within

    a city district does not per se mean that people

    walk or cycle that has to do with other things

    like urban design, spatial structure, but also with

    scale. At what scale are these activities mixed, at

    the level of the building, the street, the block, the

    district, is the mix to some extent repeated on

    several streets within the district or the located to

    one street, or a mall?

    Third, there seem to be a tendency of favouring

    certain aspects, such as density and mixed use,looking for a one-rule model. Whereas, e.g.

    Jabareen, develops a matrix for the evaluation of

    particular suggestions, one could argue for the

    possibility of several futures and pathways (Guy

    & Marvin 2000). The possibility of scaling

    problems and solutions differently, together with a

    diversity of social interest, etc. seem to suggest

    that there could not be one optimal solution. Thus,

    a discussion on sustainable urban form need to

    take a more heuristic trail, addressing a pluralityof important issues and methods rather than

    producing one-rule-models, one-liners or optimal

    solutions.

    4. Three tendencies of scale

    stabilisation

    In the following I suggest and discuss three

    tendencies of scale stabilisation found in

    sustainability planning and discourse. My

    empirical material mainly consists of plans and

    programs for Malm urban development during

    the last decade. These tendencies are not to be

    read as a critique toward the planning going on

    but as a suggestion for issues that need to be

    conceptualised and elaborated on further.

    Malm is a Swedish municipality, working quite

    consciously and ambitiously with aspects of

    sustainability and how to implement them in

    planning. Malm has been acknowledged

    internationally for its sustainable urban

    development in Vstra hamnen and the Housing

    exhibition Bo 01 of 2001 (State of the World

    2007, Giddings et. al. 2005). Malm is also a good

    city for a discussion on scale, since it is very much

    part of an ongoing urban development and

    transformations at the scale of the region,

    involving scalar shifts from one hierarchical level

    to another, as old villages and towns becomes

    transit-nodes for commuters, local squares and

    services decline and retail spaces increasingly

    appear at inter-district or even interurban levels.

    Bo 01 was a pilot-project, trying to build the

    city of the future, by focusing on e.g. ecological

    sustainability and promoting the compact city. Italso stressed the important role of architectural

    and urban design in sustainable development. The

    evaluations made (Larson et. al 2003) argues that,

    although Bo01 could be regarded as successful in

    terms of ecology and technology, the aspects of

    social and economical sustainability tended to be

    weaker. Sandstedt & st also trace of functional

    planning ideology in the effort of planning for a

    general user, where socio-economical

    stratification and differentiation of the populationare not addressed (Sandstedt & st 2003:164; on

    user, cf. Forty, 2000: 312 ff.).

    In the complement toMalm comprehensive

    plan (2005) one can now see a general and wider

    approach to sustainability than the one

    accomplished in Bo 01. The focus is now very

    much on how to integrate the three aspects of

    sustainability, social, economical and ecological.

    This integration might cause contradictions as

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    different aspects of sustainability rely on different

    criterias for success. However, the contradictions

    of sustainability go deeper still, as the same efforts

    might increase a certain aspect of sustainability at

    one scale, while decreasing it at another

    (Marcotullio & McGranahan 2007). So far such

    aspects have been discussed at national, global

    and regional level, but not so much at the level of

    the urban.

    a. Stabilising scale at the level of an area (intra-

    territorial bias)

    There seem to be a clear tendency in most plans

    and planning documents of setting a territory, and

    thus a scale at which sustainability is discussed, be

    it the city region (Frey 1999), Bo 01 (Dahlman

    2003), the municipality (Malm P), or the inner

    city area (Malm 2005), and then keeping to that

    scale. Bo 01 was, at first, planned to be socially

    more heterogeneous, but at one point the city

    chosed to look upon the question of integration at

    the scale of the municipality claiming that Malm

    needed more wealthy tax-payers. They thus

    argued for social homogeneity at the scale of the

    area to increase a greater heterogeneity in terms of

    income at the scale of the municipality (Sandstedt& st 2003:165).

    To some extent the planning of Bo01 has focused

    on the area as an isolated object of itself. It was

    planned as a spatial enclave and the aspects of

    sustainability were primarily dealt with as an

    intra-territorial issue. Evaluations and discussions

    have tended to do the same, focusing on the scale

    of the area, or a certain building, not just at an

    actantial level, but at the level of a network (cf.

    Larsson et al 2003, Dahlman 2003 & Laurell2002).

    This intra-territorial fetishism (to put it blunt)

    should not be confused with spatial fetishism,

    which is much discussed in scale theory. In

    Amsterdam Zuidas European Space,

    Swyngedouw criticises the tendency of solving

    certain social problems by way of territorial

    planning, changing focus from comprehensive

    planning to projects for urban development

    (Swyngedouw 2005:70 f). This, might in turn lead

    to a spatial fetishism, treating space in itself

    rather than the social relationships that are present

    in (and produce) that space (Lefebvre 1991,

    Collinge 2005). This is to some extent a critique

    of solving problems that are social by spatial

    interventions, Following the trail of actor-

    network-theory, one could guess that problems are

    indeed always both social and material/spatial

    (Latour 1003, 2005). Thus leaving the question of

    spatial (or social) fetishism aside there is,

    however, another related problem at stake here:

    that of a fixed scale, delegating sustainability to be

    solved within the boundaries of one (or at best a

    number of) territories, an intra-territorial bias.

    Even though the sustainability of the area at hand

    is prioritized in planning, its effects are in fact

    multi-scalar.

    Indeed, the modernist tendency of

    territorialisation, building the city as molecules,

    objects, zones or big boxes, is a well known one.

    Modernist architects often discussed their

    architectural projects and buildings as enclosed,

    self-contained systems (Forty 2000:94). Panaeri

    et al (2004) points at Le Corbusiers Unite

    dHabitation (Paneari et al 2004:116) as ahistorical key example of how the urban

    morphology of block and street was transformed

    to the single building, reducing city building to the

    building of monuments. The issue of sustainability

    seems to have triggered a new interest in the

    neighbourhood as a unit for the city or urban

    region, conceptualising them as TODs, TNDs,

    urban villages, or communities of different sorts,

    etc. (Frey 1999:41). However, the neighbourhood

    as a base for intervention is sometimes too largefor some questions, such as safety, and too small

    for others, such as integration and employment

    (Lahti Edmark 2004:165ff). As for now, urbanist

    issues are mainly described in terms of nodes and

    connections reducing the discussion of mobilities

    to relationships between nodes and subnodes or

    centres and peripheries. Such models still have the

    problem of non-differentiation; they set up a rather

    homogenous morphology, echoing modernistic

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    examples such as the Linear city, Broadacre city,

    Ville Radieuse, etc. (cf. Dupuy 2005). Such

    uniform, standardized ways of living seem even

    more utopia now than ever. To host all the

    activities of contemporary society, one would

    expect differentiation at least at the level of the

    region. Regional structure can not be built from

    bottom up alone, neither from a few uniform

    elements such as centres and sub centres.

    Malm planning seems to be more careful in its

    attendance to important routes (capital routes)

    than planning in general, and also than most

    research on sustainability. An explicit focus on

    strkplanering, planning around important routes

    has been advocated for example in projects in

    stergatan, Norra Sorgenfri and Bennets vg

    (Malm 2006, cf. Persson 2003). These projects

    play important roles on different scales as they

    both enhance the local city spaces and connect

    different parts of Malm with each other.

    Morphological literature often tends to point at

    the road structure and the urban grid as important

    and generative aspects of urban form (Caniggia &

    Maffei 2001, Hillier 1996, Hillier & Hanson

    1984). If one adds mixed mobilities to the often

    repeated demand for mixed uses (in debates onsustainable urban form), the question of

    intermingling scales would be addressed in a more

    explicit way.

    b. Stabilising the scale to that of the city centre

    district (the geometrical bias)

    The model of the compact city often explicitly

    or implicitly refers to the old European city

    cores (cf. Guy & Martin 2000). In the planning

    material of Malm we can see a lot of examplesof this, from the planning of Bo 01, explicitly set

    up with old Venice as a model, to the large

    emphasis put on Malm innerstad in the

    Comprehensive Plan and other planning

    documents, such as Mten i Staden. At some

    points this is not just an intra-territorial bias (as

    suggested above) but also the fetishisation of a

    special area, grain and thus a scale: Malms

    styrka och utvecklingsmjligheter ligger i stor

    utstrckning i innerstaden (Malm 2005:28).

    According to Malm planning documents, the

    Malm work of sustainability focuses on the

    integration of all three aspects of sustainability. It

    is also stated that Malms most important

    contribution to an ecologically sustainable city is

    to maintain a compact city; the inner, denser city,

    good for cycles and pedestrians. Economical

    sustainability is focused on enhancing and

    expanding the inner city, it is the stadsmssiga

    (urban) businesses that should grow. When it

    comes to social sustainability, the main buzz word

    isMtesplatser. In the textMten i Staden (part of

    the sustainability work through the project Vlfrd

    fr alla), good examples of meeting places are

    named, and about 80 % of these are located

    wholly, or partly, in the inner city.

    Discourse on sustainability started a process of

    de- and reinsitutionalization (Lundquist 2004,

    Hajer & Zonneveld 2001), where a lot of the old

    planning issues needed to be reappropriated

    within the new discourse. After one hundred

    years of deurbanization it does not come as a

    surprise that the pro-urban rhetoric of post-

    modern urbanism has survived, and beenadopted by the sustainable form discourse.

    The fetishisation of the inner city, setting its

    spatial scale and extensions as a model, is also

    problematic in the perspective of recent changes

    of urban development. In a sense it seems as if

    the inner city is gradually becoming a district of

    consumption (Krrholm 2008) and mono-

    functionality. Its role as a live model for mixed

    uses is hence running the risk of becoming out-

    dated.

    c. Stabilising the process of scaling (the

    hierarchic bias)

    The discourse on sustainability actually still

    echoes the Ebenezer Howard triad-perspective, be

    it town, town-country and country, or urban-

    suburban-rural. There are centrists, decentrists and

    compromisers (Frey 1999:27), monocentrists and

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    polycentrists (Okabe 2005). However, a lot of

    urbanists of today seem confident in that a simple

    hierarchy no longer works as a metaphor for the

    city. The urban region consists of a whole range of

    overlapping hierarchies and even non-hierarchical

    structures. In discourse as well as in planning, one

    can sometimes find a tendency of establishing one

    hierarchy for the city, setting the process on how

    to scale up and down (bias towards a specific scale

    hierarchy).In Malm for example there is the inner

    city, the districts, and the municipality. Most

    hierarchical planning seems to create a focus and

    competition between municipalities, since these

    make up the strongest nodes of the hierarchical

    structure. The scale of the region is still quite

    weak in Swedish planning, but at least discussed

    and analysed by Lnsstyrelsen and Region Skne.

    Latour has always focused on processes rather

    than places (2005), arguing that space and times

    are constructed in networks of heterogeneous

    actants. He has also criticizes the notion of scales,

    (other criticism of scale see Brenner 2001,

    Collinge 2005):The whole metaphor of scales going from the

    individual, to the nation state, through family,

    extended kin, groups, institutions, etc. is replaced

    by a metaphor of connections. A network is never

    bigger than another one, it is simply longer or

    more intensely connected. (Latour, 1997:3, cf.Tryselius 2007:68)

    The quote could, in a sense, be read as a pleading

    for a non-fixed concept of scales, where scales are

    produced rather than pre-given. Scale is the level

    of complexity set by the size of the network and a

    different scale imply a network of a different size.

    It is sometimes assumed that cities change in

    parts rather that in their entity (e.g. Frey 1999:45).One has to come up with district and build the city

    from bottom and up. Caniggia & Maffei suggest

    that different scales have different time intervals

    of change. Caniggia & Maffei have, however also

    pointed to the of scalar change

    It might be argued that the old city centre in

    some aspects might be loosing its place as a

    privileged node in the urban region: the

    Mumfordian shift(as we might call it in this

    paper) when the old urban and rural centres are

    deterritorialized and dispersed. Centres are,

    however, also reterritorialized and we might

    perhaps also talk of a Caniggian shift(if such an

    expression is allowed) where centres de- and

    reterritorialize not just geographically but also

    hierarchically. Svgetorp-Hyllie is a retail centre

    that will not just have impact on the neighbouring

    local retail centres. It already has a considerable

    impact on all the local retail centres in Malm

    where new retail areas now are produced and

    enacted at a new and different spatial scales (e.g.

    Svgertorp, the pedestrian malls of the inner city,

    Pilelyckan, Center Syd, etc.). This also includes a

    shift of territorial scales. As the pedestrian

    precinct has been territorialized as an urban type

    on a scale between the urban core and the street, a

    lot of issues, activities and forms, formerly

    handled or enacted on certain scales, now seem to

    take place at a scale produced by the pedestrian

    precinct. New retail is thus established at new

    spatial scales affecting the whole field of retail

    establishments, destabilising previous structures

    and starting the process of finding a new balance

    and hierarchic structure at other scale levels(Caniggia & Maffei, Alppi 2006).

    5. Concluding remarks

    If the discourse on sustainable urban forms could

    inform us on how to build better urban

    environments, I think it is as a tool for integrating

    issues and problems that formerly were

    specialised or sub-optimized, counteracting a

    splintering urbanism (Graham & Marvin). One

    main issue here is a multi-scalar approach. Suchan approach need to address the current tendencies

    of scale stabilisation discussed above, including

    the problems of scales being territorially,

    geometrically and hierarchically fixed and pre-

    given.

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