Margherita Carlucci

Beyond the ‘Mediterranean city’: socioeconomic disparities and urban sprawl in three Southern European cities

ABSTRACT Swimming pools are together an exemplificative outcome of urban sprawl and an indicator of socio-spatial polarizations in metropolitan regions. A comparative analysis of the spatial distribution of pools in three Mediterranean cities (Barcelona, Rome and Athens) provides an alternative reading of recent urbanization in southern Europe, questioning the supposed homogeneity in socioeconomic patterns and processes across the region. In the present study, the socio-spatial structure underlying dispersed urban expansion in these three cities was studied using 53 background indicators at the spatial scale of municipalities. Four indicators were proposed to study variability in the spatial distribution of pools. Relevant differences between cities were observed in the density of pools, reflecting heterogeneous patterns of dispersed urbanization and class segregation: socioeconomic polarization in Athens, settlement scattering and social mix in Rome and a more balanced socio-spatial structure in Barcelona. The spatial distribution of pools in the three cities was found associated with different socioeconomic factors, outlining the role of spatial disparities between high-income and low-income neighbourhoods, the diverging economic base and place-specific attributes. Results from Barcelona, Rome and Athens case studies provide contrasting views of the relationship between class segregation and the local socioeconomic context. The resulting patterns of sprawl reflect distinct urban models belying the supposed homogeneity of the ‘Mediterranean city’ archetype.

Urban Growth and Land-Use Structure in Two Mediterranean Regions: An Exploratory Spatial Data Analysis

The present study develops an Exploratory Spatial Data Analysis (ESDA) with the aim to assess changes over time in the distribution of selected uses of land in two Mediterranean urban regions (Rome and Athens) with different morphology and economic functions. The study uses global and local Moran’s indexes of spatial autocorrelation to describe the land-use structure observed in the two cities in mid-1970s and late-2000s, and debates on the divergent contribution of compact growth and scattered urban expansion to changes in land use. The analysis identifies fringe landscapes as a key target for urban containment policies in sprawling cities.

Land-use structure, urban growth, and periurban landscape: a multivariate classification of the European cities

Assessment of urbanization and suburbanization patterns and processes in the European Union is becoming increasingly urgent for the formulation of common territorial policies. We hypothesize that the intrinsic characteristics of landscape at the city scale reflect both the local socioeconomic context and the regional trends towards urbanization, possibly representing the contrasting attitude towards suburbanization found in European countries. Using comprehensive information provided by Urban Atlas maps, we propose an exploratory multivariate analysis of eighty-five variables describing land-use composition, landscape structure, and urban form in 283 cities with the aim being to classify the urbanization patterns observed in five European macroregions. Landscape metrics seem to be more powerful in discriminating cities among regions than indicators of land-use composition. The most relevant metrics discriminating among cities are (i) those describing fragmentation processes along the urban gradient and (ii) those evaluating form and patchiness of discontinuous settlements. Landscape and class average patch size and edge density correctly classified cities in more than 80% of cases. In particular, cities in Southern, Eastern, and Northern Europe were identified as three homogeneous groups as far as landscape structure is concerned, confirming the converging urbanization trends in the Mediterranean countries and the peculiar morphological characteristics of post-socialist urban areas.

Forest transition and urban growth: exploring latent dynamics (1936–2006) in Rome, Italy, using a geographically weighted regression and implications for coastal forest conservation

Peri-urban Mediterranean landscapes preserve high-quality environments with biodiversity strictly dependent on relict forests and mixed agroforest systems. The assessment of long-term land-use changes at the urban-wildland interface is particularly interesting for policies coping with natural land conservation and management. The dynamics of Mediterranean fringe forests were rather mixed over the last century alternating decline due to deforestation and clear-cutting up to World War II and a recovery afterwards. Forest transition theory (FTT) has been used to describe a turnaround in land-use trends for a given territory from a period of net forest area loss to a period of net forest area gain. The present paper analyses forest expansion in Rome’s province in the light of the FTT using diachronic maps, which cover two time intervals (1936–1974 and 1974–2006) corresponding to distinct socioeconomic contexts at the local scale. Our results indicate a slight increase in forest areas along the whole study period owing to natural reforestation following the abandonment of agricultural land and the higher level of forest protection. Geographically weighted regression indicates the growing importance of the urban gradient in forest dynamics. This may reflect settlement dispersion and higher disturbance to forests due to soil sealing, wildland fires, habitat fragmentation, cropland abandonment, and invasive species increase. The tendency towards a more mixed and heterogeneous woodland structure at the urban-wildland interface, especially in coastal areas, should be contrasted through sustainable land management practices integrating urban planning and environmental policies into a unique strategy for the protection of relict agroforest systems.

Complexity in action: Untangling latent relationships between land quality, economic structures and socio-spatial patterns in Italy

Land quality, a key economic capital supporting local development, is affected by biophysical and anthropogenic factors. Taken as a relevant attribute of economic systems, land quality has shaped the territorial organization of any given region influencing localization of agriculture, industry and settlements. In regions with long-established human-landscape interactions, such as the Mediterranean basin, land quality has determined social disparities and polarization in the use of land, reflecting the action of geographical gradients based on elevation and population density. The present study investigates latent relationships within a large set of indicators profiling local communities and land quality on a fine-grained resolution scale in Italy with the aim to assess the potential impact of land quality on the regional socioeconomic structure. The importance of land quality gradients in the socioeconomic configuration of urban and rural regions was verified analyzing the distribution of 149 socioeconomic and environmental indicators organized in 5 themes and 17 research dimensions. Agriculture, income, education and labour market variables discriminate areas with high land quality from areas with low land quality. While differential land quality in peri-urban areas may reflect conflicts between competing actors, moderate (or low) quality of land in rural districts is associated with depopulation, land abandonment, subsidence agriculture, unemployment and low educational levels. We conclude that the socioeconomic profile of local communities has been influenced by land quality in a different way along urban-rural gradients. Policies integrating environmental and socioeconomic measures are required to consider land quality as a pivotal target for sustainable development. Regional planning will benefit from an in-depth understanding of place-specific relationships between local communities and the environment.

The way towards land consumption: Soil sealing and polycentric development in Barcelona

This paper concerns the debate on polycentric development and land consumption in growing urban regions. The aim of this study is to verify if urban morphology reflects the transition from a mono-centric and hyper-compact form centred on Barcelona (Spain) towards a polycentric agglomeration based on subcentres functionally distinct from the head city. The spatial distribution of impervious land by municipal unit has been investigated under three spatial domains (province, metropolitan region and metropolitan area of Barcelona). Soil sealing indicators have been analysed using descriptive, inferential and multivariate statistical techniques. Sealing intensity and diversification decreased with the distance from the centre of Barcelona, while per-capita sealed land was low in the central city and much higher and stable in peripheral municipalities. Our results shed light on Barcelona’s long-term expansion, providing evidence in favour of settlement scattering instead of a genuine polycentric structure. The article finally debates the use of soil sealing indicators for the assessment of polycentric or scattered urban development in the Mediterranean region.

Patterns of Sprawl: The Socioeconomic and Territorial Profile of Dispersed Urban Areas in Italy

Salvati L. and Carlucci M. Patterns of sprawl: the socioeconomic and territorial profile of dispersed urban areas in Italy, Regional Studies. The debate on the causes and consequences of urban sprawl has not led to a widely accepted interpretative framework so far. However, to formulate effective sustainable development policies, a comprehensive analysis of sprawl is becoming more and more urgent in Europe. Through an exploratory data analysis of the spatial distribution of 132 indicators (regarded as socioeconomic and environmental factors of urban sprawl) in 8100 Italian municipalities affected by different levels of settlement dispersion, this study discusses place-specific factors that depend on the socioeconomic context and lead to diverging models of sprawl throughout the country. The illustrated methodology produces an informative base possibly supporting urban containment and sustainable development policies in ‘sprawling’ regions.

Paths to Change: Bio-Economic Factors, Geographical Gradients and the Land-Use Structure of Italy

This study introduces a bio-economic approach to evaluate the influence of local socioeconomic contexts on complex processes of landscape transformation (urbanization, withdrawal of farming with woodland creation and loss in crop mosaics) in a sustainable development perspective. Land-use and socioeconomic indicators (including shares of agriculture, industry and services in total product, per-worker value added, productivity by economic sector, distance from central cities, latitude and elevation) at the local district scale in Italy have been considered together in an exploratory approach based on multivariate statistics. The combined use of land-use and socioeconomic indicators was preferred to more traditional approaches based on single-variable analysis and allows identifying latent factors of landscape transformation at the local scale. Our approach sheds light in the intimate relationship between regional economic structures and land-use change in districts with varying socio-environmental attributes across Italy. Urban-rural divides, coastal–inland dichotomy and the elevation gradient were relevant factors shaping urbanization-driven landscape transformations at the country scale. Indicators of economic structure (and especially industrial production and per-worker productivity of industry and services) were also documented to influence greatly entity and direction of change in the use of land. Discontinuous and dispersed urbanization has been demonstrated to be spatially-decoupled from consolidated (continuous and compact) urbanization, expanding into undeveloped rural areas progressively far away from central cities and being spatially associated with forest land.

In-between regional disparities and spatial heterogeneity: a multivariate analysis of territorial divides in Italy

Processes such as economic polarization, social disparities and the asymmetric distribution of natural capital are becoming progressively more interlinked in developed countries and may reflect the uneven decline of the ‘centre-periphery’ model. The assessment of regional disparities and spatial heterogeneity in socioeconomic phenomena is a key issue in regional studies and takes advantage of the use of multi-domain frameworks and decision support systems. We performed an exploratory analysis of 133 indicators assessing seven thematic domains (demography/settlements, labour market, economic structure, quality of life, agriculture/rural development, landscape/water, environment/soil resources) with the aim of investigating regional disparities in Italy in the light of territorial changes driven by urbanization, industrial decentralization, agricultural intensification and land abandonment. The results of our study indicate that latitude, elevation and urban gradients have determined a complex spatial pattern in both socioeconomic and environmental variables in Italy. The proposed approach provides an overall assessment of the intensity of territorial disparities on a regional scale for each thematic domain, and of intra-region spatial heterogeneity for each indicator, representing a decision-making tool for policies targeting a sustainable and spatially balanced development.

Assessing the effectiveness of sustainable land management policies for combating desertification : A data mining approach

This study investigates the relationship between fine resolution, local-scale biophysical and socioeconomic contexts within which land degradation occurs, and the human responses to it. The research draws on experimental data collected under different territorial and socioeconomic conditions at 586 field sites in five Mediterranean countries (Spain, Greece, Turkey, Tunisia and Morocco). We assess the level of desertification risk under various land management practices (terracing, grazing control, prevention of wildland fires, soil erosion control measures, soil water conservation measures, sustainable farming practices, land protection measures and financial subsidies) taken as possible responses to land degradation. A data mining approach, incorporating principal component analysis, non-parametric correlations, multiple regression and canonical analysis, was developed to identify the spatial relationship between land management conditions, the socioeconomic and environmental context (described using 40 biophysical and socioeconomic indicators) and desertification risk. Our analysis identified a number of distinct relationships between the level of desertification experienced and the underlying socioeconomic context, suggesting that the effectiveness of responses to land degradation is strictly dependent on the local biophysical and socioeconomic context. Assessing the latent relationship between land management practices and the biophysical/socioeconomic attributes characterizing areas exposed to different levels of desertification risk proved to be an indirect measure of the effectiveness of field actions contrasting land degradation.