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template 90x160 poster MS final · Fig.2 Effective mesh density Index on a regular grid at 1 km in...
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M. Soraci 1 , F. Assennato 2 , R. Bruno 3 , L. Congedo 4 , P. De Fioravante 5 , M. Di Leginio 6 , I. Marinosci 7 , M. Munafò 8 , S. Pranzo 9 , A. Strollo 10 1 ISPRA and Padua University (TESAF), 2,4,6,7,8,10 ISPRA, 3 IUSS Pavia, 5 Tuscia University Key-words: Land Take, Urban Sprawl, Urban Densification, Land Degradation, Ecosystem Services 38% 38% PERCENTAGE OF PERCENTAGE OF THE ITALIAN THE ITALIAN TERRITORY WITH TERRITORY WITH HIGH HIGH FRAGMENTATION FRAGMENTATION Land consumption is referred to artificial land cover growth at the expense of natural and semi-natural land (European Environmental Agency, 1997), therefore including unsealed soil in urban areas. Land consumption is linked to the construction of new buildings and settlements, the expansion of cities, the densification or conversion of land within an urban area. Objective: Land consumption monitoring in agreement with the Italian law L. 132/2016 ISPRA and the Italian National System for the Protection of the Environment (SNPA) perform the National map of land consumption integrated with Copernicus High Resolution Layers (HRL) and the Corine Land Cover (CLC) based on a system , which distinguishes artificial from natural soil. Land monitoring is based on: • Satellite Remote sensing (Optical and SAR); • Photointerpretation of aerial orthophotos; • Integration of geographical and topographic data; • GIS modelling for elaboration and computation of environmental and territorial indices. Fig.1 Land consumption at municipality level (% 2017). Source: ISPRA’s processing on SNPA map. Fig.2 Effective mesh density Index on a regular grid at 1 km in 2017. Lower values of the index identify lower fragmentation levels. Source: ISPRA’s processing on SNPA data. Land cover and consumption data allow to develop useful indicators for the evaluation of phenomena such as: urban sprawl, dispersion and settlement diffusion, fragmentation. Analysis of the urban transformation is very important in the evaluation of urban sprawl. For this assessment, several indicators are used in the report, such as the Edge Density (ED), which describes the fragmentation of the landscape through the density of the margins of the built and two diffusion indicators, the Largest Class Patch Index (LCPI) and the Remaining Mean Patch Size (RMPS), thus assessing the diffusion of cities around the central core. The fragmentation of the territory is the process of transformation of large non-artificial patches into parts of territory that are smaller and more isolated, the result of phenomena of building and urban expansion and of the development of the infrastructural network. The evaluation of the fragmentation is carried out through an innovative method that allows to analyze every square kilometer through the degree of fragmentation due to the presence of artificial areas and infrastructures. At the national level, 38% of the territory results in a high or very high fragmentation class (Figure 2). Increase of land consumption between 2106 and 2017 in hectares (first 20 provinces) Soil Sealing and Urban Growth in Italy Mariangela Soraci ISPRA and Padua University (TESAF) 0 50 100 150 200 250 300 350
Transcript of template 90x160 poster MS final · Fig.2 Effective mesh density Index on a regular grid at 1 km in...
M. Soraci1, F. Assennato2, R. Bruno3, L. Congedo4, P. De Fioravante5, M. Di Leginio6, I. Marinosci7, M. Munafò8, S. Pranzo9, A. Strollo10
1ISPRA and Padua University (TESAF), 2,4,6,7,8,10 ISPRA, 3IUSS Pavia, 5Tuscia University
Key-words: Land Take, Urban Sprawl, Urban Densification, Land Degradation, Ecosystem Services
38%38%PERCENTAGE OF PERCENTAGE OF
THE ITALIAN THE ITALIAN TERRITORY WITH TERRITORY WITH
HIGH HIGH FRAGMENTATIONFRAGMENTATION
Land consumption is referred to artificial land cover growth at the expense of natural andsemi-natural land (European Environmental Agency, 1997), therefore including unsealedsoil in urban areas. Land consumption is linked to the construction of new buildings andsettlements, the expansion of cities, the densification or conversion of land within anurban area.
Objective:
Land consumption
monitoring in agreement
with the Italian law
L. 132/2016
ISPRA and the Italian National System for theProtection of the Environment (SNPA) perform theNational map of land consumption integrated withCopernicus High Resolution Layers (HRL) and theCorine Land Cover (CLC) based on a system , whichdistinguishes artificial from natural soil.
Land monitoring is based on:
• Satellite Remote sensing (Optical and SAR);• Photointerpretation of aerial orthophotos;• Integration of geographical and topographic data;• GIS modelling for elaboration and computation ofenvironmental and territorial indices.
Fig.1 Land consumption at municipality level (% 2017). Source: ISPRA’s processing on SNPA map.
Fig.2 Effective mesh density Index on a regular grid at 1 km in 2017. Lower values ofthe index identify lower fragmentation levels. Source: ISPRA’s processing on SNPAdata.
Land cover and consumption data allow to develop usefulindicators for the evaluation of phenomena such as: urbansprawl, dispersion and settlement diffusion, fragmentation.Analysis of the urban transformation is very important in theevaluation of urban sprawl. For this assessment, severalindicators are used in the report, such as the Edge Density(ED), which describes the fragmentation of the landscapethrough the density of the margins of the built and twodiffusion indicators, the Largest Class Patch Index (LCPI)and the Remaining Mean Patch Size (RMPS), thusassessing the diffusion of cities around the central core. Thefragmentation of the territory is the process of transformationof large non-artificial patches into parts of territory that aresmaller and more isolated, the result of phenomena ofbuilding and urban expansion and of the development of theinfrastructural network. The evaluation of the fragmentationis carried out through an innovative method that allows toanalyze every square kilometer through the degree offragmentation due to the presence of artificial areas andinfrastructures. At the national level, 38% of the territoryresults in a high or very high fragmentation class (Figure 2).
Increase of land consumption between 2106 and 2017 in hectares(first 20 provinces)
Soil Sealing and Urban Growth in Italy Mariangela Soraci ISPRA and Padua University (TESAF)
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