Many recent research works have been showing so far that in watershed management the concepts of environmental accounting cover a fundamental role. This is even more true when the main purpose is represented by the comprehension of the interactions between natural processes and human activities. In the special case of soil erosion and landsliding, setting up a functional linkage between hazard evaluation and risk assessment is for well known reasons a challenging task. Aim of this work has been the attempt to devise and apply a general methodology for the assessment of the environmental and economic implications of hillslope dynamics. A watershed located in central Tuscany (Italy) has been chosen to test the application of the method. Here, human settlements and infrastructures have experienced strong difficulties in finding an equilibrium with natural landscape evolution: landslides and soil erosion affect a large portion of the area. In this context every single development or land use planning has to deal with hillslope. dynamics which thus should be accounted for in environmental accounting and impact assessment procedures. This has been accomplished using both distributed semi-empirical hydrological-erosive modelling for computing and estimating soil losses and distributed models for the evaluation of landslide hazard and intensity in terms of factor of safety. The two models have been separately applied and their results suitably added to obtain a multihazard map. The results of the hazard assessment procedure, coupled with basic environmental accounting data relative to the elements at risk, both on land values and net incomes, show that the methodology yields satisfactory outcomes and could easily be integrated with similar approaches used in environmental accounting.

Environmental accounting of hillslope processes in Central Tuscany, Italy / Bianchi F.; Catani F.; Moretti S.. - STAMPA. - (2001), pp. 229-238. [10.2495/ECO010231]

Environmental accounting of hillslope processes in Central Tuscany, Italy

CATANI, FILIPPO;MORETTI, SANDRO
2001

Abstract

Many recent research works have been showing so far that in watershed management the concepts of environmental accounting cover a fundamental role. This is even more true when the main purpose is represented by the comprehension of the interactions between natural processes and human activities. In the special case of soil erosion and landsliding, setting up a functional linkage between hazard evaluation and risk assessment is for well known reasons a challenging task. Aim of this work has been the attempt to devise and apply a general methodology for the assessment of the environmental and economic implications of hillslope dynamics. A watershed located in central Tuscany (Italy) has been chosen to test the application of the method. Here, human settlements and infrastructures have experienced strong difficulties in finding an equilibrium with natural landscape evolution: landslides and soil erosion affect a large portion of the area. In this context every single development or land use planning has to deal with hillslope. dynamics which thus should be accounted for in environmental accounting and impact assessment procedures. This has been accomplished using both distributed semi-empirical hydrological-erosive modelling for computing and estimating soil losses and distributed models for the evaluation of landslide hazard and intensity in terms of factor of safety. The two models have been separately applied and their results suitably added to obtain a multihazard map. The results of the hazard assessment procedure, coupled with basic environmental accounting data relative to the elements at risk, both on land values and net incomes, show that the methodology yields satisfactory outcomes and could easily be integrated with similar approaches used in environmental accounting.
2001
1853128716
Ecosystems and Sustainable Development III, Advances in Ecological Sciences
229
238
Bianchi F.; Catani F.; Moretti S.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/230227
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