Regional disaster impact analysis: comparing input–output and computable general equilibrium models

Natural Hazards and Earth System Sciences - Tập 16 Số 8 - Trang 1911-1924
Elco Koks1, Lorenzo Carrera2, Olaf Jonkeren3, Jeroen C. J. H. Aerts1, Trond Husby3, Mark Thissen3, Gabriele Standardi2, Jaroslav Myšiak2
1Institute for Environmental Studies (IVM), VU University Amsterdam, Amsterdam, The Netherlands
2Fondazione Eni Enrico Mattei (FEEM), Venice, Italy
3PBL Netherlands Environmental Assessment Agency, The Hague, the Netherlands

Tóm tắt

Abstract. A variety of models have been applied to assess the economic losses of disasters, of which the most common ones are input–output (IO) and computable general equilibrium (CGE) models. In addition, an increasing number of scholars have developed hybrid approaches: one that combines both or either of them in combination with noneconomic methods. While both IO and CGE models are widely used, they are mainly compared on theoretical grounds. Few studies have compared disaster impacts of different model types in a systematic way and for the same geographical area, using similar input data. Such a comparison is valuable from both a scientific and policy perspective as the magnitude and the spatial distribution of the estimated losses are born likely to vary with the chosen modelling approach (IO, CGE, or hybrid). Hence, regional disaster impact loss estimates resulting from a range of models facilitate better decisions and policy making. Therefore, this study analyses the economic consequences for a specific case study, using three regional disaster impact models: two hybrid IO models and a CGE model. The case study concerns two flood scenarios in the Po River basin in Italy. Modelling results indicate that the difference in estimated total (national) economic losses and the regional distribution of those losses may vary by up to a factor of 7 between the three models, depending on the type of recovery path. Total economic impact, comprising all Italian regions, is negative in all models though.

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Natural Hazards and Earth System Sciences

Tập 16 Số 8

1911-1924

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