1,720,975 research outputs found
L'emergenza nell'emergenza: il progetto C.A.S.E. di Sassa NSI
No full textThe L’Aquila earthquake of 2009 activated an emergency response that took shape in the
building of new temporary residential areas. Among these sites, there is one of the 19 C.A.S.E.
projects located in the northwest periphery of L’Aquila, in the hamlet of Sassa. The area is
bordered on one side by important regional infrastructure and on the other by the river Raio. In
December 2010, during the post-earthquake emergency, this residential complex was flooded
by the previously mentioned river. Many proposals were made aimed at giving new life to this
complex, but none of them includes measures to mitigate the hydrogeological risk that has
occurred several times (2010, 2019). Considering this, these kinds of actions are essential to
ensure safe use. This work wants to show some possible useful solutions to the highlighted
problem through the targeted use of Nature-Based Solutions (NBSs), whose choice is conveyed
by the analysis of some in-force planning tools
Addressing land use planning: A methodology for assessing pre- and post-landslide event urban configurations
Full text linkWith urban areas projected to accommodate 68 % of the global population by 2050, the imperative for inclusive, safe, and sustainable cities becomes paramount. In the timeline of urban centers, landslides represent one of the most destructive phenomena, involving several resources allocation with private and public investments, sometimes claiming human lives. By synergically connecting environmental, planning, and configurational spheres, this study seeks to support the proactive management of landslide risk. The proposed three-step methodology allowed to quantify the environmental features involved in landslide occurrence, evaluate planning framework vulnerabilities, and suggest alternative configurations for urban areas that experienced landslides. The methodology has been applied to the case study involving a tragic landslide in Casamicciola Terme (Italy) in November 2022. First, the stream network and the drainage basin corresponding to confluence point of the landslide into the sea have been calculated (environmental elaborations). Subsequently, these elaborations have been overlapped with the runoff mitigation and the sediment deposition layers, extracted through the INVEST software. Secondly, the reconnaissance of the local and superordinate planning levels has been realized, to deepen planning tools cogency on the study area, contextually deepening the constraints that characterize it. From the overlapping of these two steps, free landslide risk areas have been located. Finally, based on the available territorial surface (Sta) and the territorial cover ratio (Rct), two territorial configuration scenarios have been proposed, envisaging the relocation of the buildings involved into the landslide. Results show that landslide originated by three out of five gullies. Some portions of the urban areas of Casamicciola Terme are still under high and very high hydrogeological risk. Contextually, it emerges poor attention from the local planners to the superordinate planning framework. Historic settlement has an Rct of 33.64 %, while areas in which relocate the built up show an Rct of 32,45 % for scenario 1 and 27,9 % for scenario 2. The methodology resulted useful to address planning vulnerabilities, supporting the realization of alternative configurational scenarios. We expect our research to contribute to the evolving field of disaster risk reduction, by providing a systematic approach to manage landslide risk
Indicators Engineering for Land Uptake and Agricultural Loss. A Study in European Countries
No full textSoil and its associated ecosystem services are indispensable resources for human survival on the planet. Current models of economic and social development exert unprecedented pressures and demands on the land, creating an unsustainable imbalance. The objective of this work is to assess the land use changes that have occurred in EU countries from 1990 to 2018 through CORINE Land Cover. Particular attention has been paid to the urban conversion of soils to agricultural use, as primary production represents one of the most tangible ecosystem services provided by soils, the quantification of which is complex due to the synergistic effect between them. The study has analyzed and evaluated the agricultural losses resulting from urbanization for all EU countries and produced an economic estimate of these losses. The results show that the prevailing transformations are those of anthropogenic origin and in particular urbanization at the expense of agricultural areas, although with different drive forces in the various countries. The importance of knowing the extent of this phenomenon lies in the possibility of implementing targeted corrective actions aimed at limiting, mitigating and compensating the effects of anthropogenic soil transformations
The Planning Tool Mosaic as a Tool for Sustainable Land Management. Keys Point for a National Regulatory Framework
No full textThe issue of land take has now become part of the objectives of international and European policies. At the international level, the 2030 Agenda aims to strengthen inclusive and sustainable urbanization by 2030. The European Union in the 7th Environmental Action Programme calls for progress towards «zero net land take» by 2050. Even if the proposal for a European Land Use Directive collapsed in 2016, there is still a strong need to standardize the regulatory framework that is currently highly fragmented at all institutional levels. The intervention in this phe-nomenon requires the availability of instruments that, on a sufficiently large scale, take account of multiple factors (environmental, economic, demographic...) and at the same time have a degree of detail and cogency that directly affect the trans-formation of the territory. One possible tool is the PTM (Planning Tool Mosaic). The mosaicking of the municipal plans, based on the use of common definitions and unified legends, allows having a harmonious and unique framework of local planning that, in short, is the one that regulates soil transformations in Italy. Alt-hough some regions have instruments of this nature, the national framework is profoundly varied due to the multiplicity of regulatory sources to which individu-al municipalities belong. The aim of this study is to analyze the regulatory frame-work at the regional level for the development of spatial planning, taking into ac-count both the logical and, where available, the technical components. Their anal-ysis aims to highlight the strengths and weaknesses that characterize the multi-form regional rules and identify the standards to which they should adhere
Spatial autocorrelation analysis for new FUA inner strategic asset. Metropolitan city of Milan as a case study.
No full textFunctional Urban Areas represent integrated urban contexts whose territories are economically interconnected. They, therefore, include a central city and all the municipalities that make up the commuting area for work reasons. The economic energies and settlement transformations that characterize these territories have been consolidated over time. The current geographic conformation, as defined today, does not provide information on each municipality's rank (role) in the overall functioning. In this perspective, the work presented examines the demographic and urban dynamics that have affected the FUA of Milan in the last 60 years and then evaluates the presence of possible homogeneous geographic clusters (Hot and Cold spots) through spatial correlation techniques. Statistic validation was performed through the ANOVA and subsequent post‐hoc analysis (Tukey-Kramer method). Results show a new configurational asset within the FUA of Milan, which could provide a new key to interpreting the territory, aimed at identifying homogeneous areas to adopt new and more effective forms of strategic plannin
Urban planning vs. Agricultural production: A study on the Po Valley
Full text linkAt a time when wars and pandemics have disrupted the world order and deeply damaged
international agreements, more people are talking about the energy and food independence of the
nation-states. It is clear that the achievement of these objectives will not be rapid, but it is also
clear that land use must take account of these important aspects. The over-dimensioning of the
settled areas presents illogically in almost all municipal urban planning plans regardless of their
geographical location, demographic dynamics, and values of the administered territory; it certainly
constitutes an obstacle to effective land use. The work presented here aims to analyze the effects on
agricultural production of the transformations envisaged by the plans of the provinces of Modena
and Reggio nell’Emilia, while also providing solutions that could promote the sustainability of the
interventions planned in these areas of high agri-food value
Land Use Changes and Ecosystem Services: The Case Study of the Abruzzo Region Coastal Strip
Full text linkConsistent and optimized territorial planning, imply the use of numerous variables aimed at improving life quality and reduction of environmental impacts. The resilience of the territory to climate change threats is strongly linked to its progressive transformation. This fact is extremely evident in coastal systems, which are intrinsically fragile systems due to their high environmental value and strong anthropogenic pressure. The existing tools and techniques provide to outline future transformation effects through the scenarios analysis. This work has the objective to evaluate the effects of land use changes in the territory of the Abruzzo coast. The conversion from natural soils to artificial uses has a significant impact on several ecosystem services. The regulation services considered in this work are flood regulation, carbon storage and sequestration, and habitat for biodiversity. The first is directly connected to soil sealing which determines a reduction of water infiltration with the consequent overloading of the existing sewerage systems. The quantitative evaluation is made using the concept of surface runoff coefficient. Instead, the estimation of the last two ecosystem services has been made using InVEST (Integrated Valuation of Ecosystem Services and Tradeoffs) models, specifically the Carbon Storage and Sequestration model and the Habitat Quality model. The results show that Land Use Changes (2012–2018) caused a potential increase of 10% in runoff and an annual Carbon Sequestration loss estimated at about € 820,000
Limit Land Take. A Matter of Thresholds?
No full textSoil is a key element for achieving national and international sustainability objectives. However, the legislation in this field is still far from defining the limits of land take, without prejudice to the objective of zero net land consumption to be achieved by 2050. In Italy, the legislation on the subject is very varied. Among this work’s objectives is to identify the weaknesses and strengths on which to focus new policies and tools to control the land take. The definition of land take in the regional laws is often ambiguous, and the methods indicated for containment as well as for monitoring often appear to lack scientific basis. The most important problem the international community raises is the lack of proportionality between the variation of urbanization and that of population. As evidence of this, Agenda 2030 has developed, in the context of reaching the target 11.3 a specific index the “Ratio of land consumption rate to population growth rate” (LCRPGR) which aims to monitor the relationship between the scale of urban development and demography, to link the growth of urbanized parts to the real demographic dynamics that are found in the territory. The correct identification of threshold values now appears to be a viable solution for achieving the objectives set at the European level. The proposed work represents a first exercise in this direction. The comparison of the LCRPGR index with established indices of scientific literature (both of quality of life and of configurational analysis of urban spaces) could provide useful indications
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