Anthropogenic changes in the alluvial plains of the Tyrrhenian Ligurian basins

Luino, Fabio; Paliaga, Guido; Roccati, Anna; Sacchini, A.; Turconi, Laura; Faccini, Francesco

doi:10.3301/rol.2019.31

Cited by 18 publications

(34 citation statements)

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“…Some very recent researches concerning urban geomorphology were carried out in a number of Mediterranean cities, in terms of geomorphological mapping, geomorphological heritage and characterization of anthropogenic landforms (Brandolini et al, 2018(Brandolini et al, , 2019Del Monte et al, 2016;Luberti et al, 2018Luberti et al, , 2019Mozzi et al, 2018). Most of these case studies are located in alluvial-coastal areas with more or less pronounced hills behind them (Brandolini et al, 2017(Brandolini et al, , 2018Luino et al, 2019;Roccati et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Urban geomorphology of a historical city straddling the Tanaro River (Alessandria, NW Italy)

et al. 2020

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The integration of field surveys, bibliographic research and multitemporal analysis of historical maps, aerial photographs and satellite images in a GIS environment, allowed the current and past geomorphological features of the old city of Alessandria and its surrounding areas, NW Italy, to be identified and mapped. Their analysis provided an overview of the geomorphological evolution of the city that is strictly related to the historical vicissitudes occurred since the Middle Ages. Nowadays, the most representative landforms and deposits characterizing the urban landscape result from human interventions and are associated with ancient military facilities and infrastructures, a historical man-made channel network no longer recognizable, the Tanaro riverbed channelization, and the urban sprawl occurred from the second half of the nineteenth century onwards. This study represents a useful tool for urban planning and management and for raising the citizens' awareness of the urbanlandscape geomorphological features and evolution, and therefore the geo-hydrological risk.

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Section: Introductionmentioning

confidence: 99%

Urban geomorphology of a historical city straddling the Tanaro River (Alessandria, NW Italy)

et al. 2020

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“…This paper demonstrated that the rural and urban components of the catchment are directly connected and a comprehensive approach to the area which consider landscape history and anthropic changes is crucial [28]. In the light of the results discussed in this paper, the following guidelines can help in improving current management policies: (a) Landscape maintenance: Small, timely and widespread maintenance interventions, particularly in the upper slope, would reduce runoff and solid transport and increase time of concentration.…”

Section: Landscape Planning For Flood Managementmentioning

confidence: 95%

“…This is very evident in the north-western Italian region of Liguria, which has been affected by a significant number of flood events in recent years and it is characterised by widespread geo-hydrological phenomena. Previous research focused on coastal areas, looking at the way in which geomorphic processes due to human interference increased geo-hydrological hazard [25][26][27][28]. Other studies concerned mountain contexts either in the Po Valley catchment, often independent from human interaction [29] and coastal catchments characterised by landscape changes and anthropogenic landforms [30].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Other studies concerned mountain contexts either in the Po Valley catchment, often independent from human interaction [29] and coastal catchments characterised by landscape changes and anthropogenic landforms [30]. Ligurian small catchments in sub-coastal contexts lie in intense-rain high-hazard areas and are intensively urbanised along rivers and mainly in lower coastal zones [28]. Some of them have been hit by flash floods in the past; detailed knowledge of their morphometric and morphological features related to flood and landslide hazard, detailed information on flash flood development times, the degree of urbanization/anthropogenic modification and a list of elements at risk can help prioritize effective mitigation strategies [31].…”

Section: Literature Reviewmentioning

confidence: 99%

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Geomorphological Landscape Research and Flood Management in a Heavily Modified Tyrrhenian Catchment

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Since the nineteenth century, most urban catchments in Europe have been subject to significant landscape variations. These modifications have been caused by population change and the transition through rural, industrial and post-industrial economies. Land use and rainfall regime changes, together with land use variations, are frequently associated with flood hazard increase. This paper examines geomorphological landscape changes from the nineteenth century to the present day in the Bisagno Valley, Genoa metropolitan area. The Valley is internationally known for its recurring floods: the last events with fatalities occurred in 2011 and 2014. The extent of landscape change and the history of floods were examined by combining scientific data and information from historical maps, written accounts, topographical drawings and photographs. Historical–geographical and geomorphological analyses were used to reconstruct the runoff for three different periods since 1850. Our results demonstrate that geomorphological landscape variations, including modifications of the river bed, and the abandonment of the countryside and terraces are not sustainable and have progressively allowed an increase in flooding, making it necessary to implement sustainable management policies. In particular, specific spatial urban planning and management measures are necessary in order to mitigate flood hazard and vulnerability.

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“…The vulnerable elements along the Ligurian Tyrrhenian coast include those of the Portofino Promontory, which can suffer serious damage, sometimes even with the loss of human lives [36]. Table 2 shows the main geo-hydrological events recorded from 1910 to 2019 in three municipalities of the Portofino Natural Regional Park, based on the severity of the effects on the ground, understood as the intensity of the surveyed damage.…”

Section: Natural Hazards In the Portofino Promontorymentioning

confidence: 99%

Implementation of Nature-Based Solutions for Hydro-Meteorological Risk Reduction in Small Mediterranean Catchments: The Case of Portofino Natural Regional Park, Italy

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Nature-based solutions (NBS) are usually defined as complementary or alternative solutions to “grey infrastructures” (traditionally made with cement) aimed at conserving and regenerating the functionality of natural and semi-natural ecosystems. The research to date shows a considerable potential of NBS to address the current challenges related to climate change and geo-hydrological risks. Despite significant interest in NBS by researchers and practitioners, knowledge concerning their practical implementation, monitoring, and evaluation is still lacking. This is particularly true for large-scale NBS. The present paper discusses how such solutions can be implemented in the context of hydro-meteorological risk reduction in small Mediterranean catchments with a strong tourist vocation. The work presented here is situated within the RECONECT Project (Regenerating ECOsystems with Nature-based solutions for hydro-meteorological risk rEduCTion), which aims to contribute to a European reference framework on NBS by demonstrating, upscaling, and replicating large-scale NBS in rural and natural areas. The Italian case study of RECONECT is the Portofino Natural Regional Park, which represents a unique natural landscape element with high ecologic, social, and economic (touristic) value, which is threatened by a range of geo-hydrological hazards, such as flash floods, hyper-concentrated floods, shallow landslides, rockfalls, and storm surges. This paper also presents details of NBS interventions in two pilot catchments (San Fruttuoso and Paraggi) visited by thousands of tourists throughout the year. It addresses some of the key aspects related to monitoring meteorological and hydrological processes, as well as remote sensing activities (i.e., LiDAR surveys), which are necessary for the identification of critical-instability areas along waterways and the reconstruction of dry stone walls. Lastly, a discussion of relevant mitigation and adaptation strategies that are potentially replicable at national and international levels is also provided.

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Anthropogenic changes in the alluvial plains of the Tyrrhenian Ligurian basins

Cited by 18 publications

References 0 publications

Urban geomorphology of a historical city straddling the Tanaro River (Alessandria, NW Italy)

Urban geomorphology of a historical city straddling the Tanaro River (Alessandria, NW Italy)

Geomorphological Landscape Research and Flood Management in a Heavily Modified Tyrrhenian Catchment

Implementation of Nature-Based Solutions for Hydro-Meteorological Risk Reduction in Small Mediterranean Catchments: The Case of Portofino Natural Regional Park, Italy

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