Difference between revisions of "Regional economic accounting methods"
| Line 9: | Line 9: | ||
Assessing the economic impact of environmental measures or environmental degradations may be done through Cost benefit analysis (CBA). However, indirect impacts on other sectors sectors not directly targeted by the measure or directly impacted by the degradation) often should be excluded from the analysis. When such indirect impacts are important enough to affect the economy of a region (i.e. direct economic benefits or costs result in additional or reduced economic activities in the region), regional accounting methods may be suitable and complementary to CBA. They might be applied for instance for the estimation of the indirect benefits resulting from the restoration of fish yield by reducing suspended sediment concentration in waters of a given coastal area. | Assessing the economic impact of environmental measures or environmental degradations may be done through Cost benefit analysis (CBA). However, indirect impacts on other sectors sectors not directly targeted by the measure or directly impacted by the degradation) often should be excluded from the analysis. When such indirect impacts are important enough to affect the economy of a region (i.e. direct economic benefits or costs result in additional or reduced economic activities in the region), regional accounting methods may be suitable and complementary to CBA. They might be applied for instance for the estimation of the indirect benefits resulting from the restoration of fish yield by reducing suspended sediment concentration in waters of a given coastal area. | ||
| − | The resulting regional income/employment effects may be quantified through the use of regional [[input-output matrix]] (I-O), [[supply chain analysis]], [[computable general equilibrium]] (CGE) or [[ | + | The resulting regional income/employment effects may be quantified through the use of regional [[input-output matrix]] (I-O), [[supply chain analysis]], [[computable general equilibrium]] (CGE) or [[accounts environmentally adjusted]]. It is important to mention the fact that none of these four regional accounting methodologies mentioned above is perfect since each present advantages and disadvantages as presented further. For instance, supply chain analysis has the disadvantage of taking into account fewer indirect impacts than I-O tables. I-O tables assume linear relations between inputs and outputs from different sectors as well as linear relations between outputs and final demand, which does not always correspond to reality. However, some have validated their input-output model with historical data and obtained simulated results quite close to historical data (look for [http://www.iioa.org/pdf/13th%20conf/Idenburg&Wilting_DMITRI.pdf Idenburg and Wilting, 2000]<ref>'''Idenburg A. M., Wilting H.C., 2000.''' ''DIMITRI : a dynamic Input-output Model to study the Impacts of technology Related Innovations.'' Paper to be presented at the WIII International Conference on Input-Output techniques, University of Macerata, Italy, August 21-25th 2000. Available on Internet : http://www.iioa.org/pdf/13th%20conf/Idenburg&Wilting_DMITRI.pdf</ref>). The results from CGE models are highly dependents on key economic parameters on which remain uncertainties. In addition, those models are time consuming (it takes about years to build a CGE model) and expensive. |
For more details on regional accounting follow these links : | For more details on regional accounting follow these links : | ||
Revision as of 11:24, 15 June 2007
Still in constrution. This is a very first draft
Regional economic accounting methodologies may be useful and complementary tools to cost benefit analysis (CBA) for assessing socioeconomic impact of environmental measures or environmental degradations when their indirect impacts may be of such significance and magnitude that important regional income multiplier effects may be generated.
When to use regional economic accounting methodologies ?
Assessing the economic impact of environmental measures or environmental degradations may be done through Cost benefit analysis (CBA). However, indirect impacts on other sectors sectors not directly targeted by the measure or directly impacted by the degradation) often should be excluded from the analysis. When such indirect impacts are important enough to affect the economy of a region (i.e. direct economic benefits or costs result in additional or reduced economic activities in the region), regional accounting methods may be suitable and complementary to CBA. They might be applied for instance for the estimation of the indirect benefits resulting from the restoration of fish yield by reducing suspended sediment concentration in waters of a given coastal area.
The resulting regional income/employment effects may be quantified through the use of regional input-output matrix (I-O), supply chain analysis, computable general equilibrium (CGE) or accounts environmentally adjusted. It is important to mention the fact that none of these four regional accounting methodologies mentioned above is perfect since each present advantages and disadvantages as presented further. For instance, supply chain analysis has the disadvantage of taking into account fewer indirect impacts than I-O tables. I-O tables assume linear relations between inputs and outputs from different sectors as well as linear relations between outputs and final demand, which does not always correspond to reality. However, some have validated their input-output model with historical data and obtained simulated results quite close to historical data (look for Idenburg and Wilting, 2000[1]). The results from CGE models are highly dependents on key economic parameters on which remain uncertainties. In addition, those models are time consuming (it takes about years to build a CGE model) and expensive.
For more details on regional accounting follow these links :
References
- ↑ Idenburg A. M., Wilting H.C., 2000. DIMITRI : a dynamic Input-output Model to study the Impacts of technology Related Innovations. Paper to be presented at the WIII International Conference on Input-Output techniques, University of Macerata, Italy, August 21-25th 2000. Available on Internet : http://www.iioa.org/pdf/13th%20conf/Idenburg&Wilting_DMITRI.pdf
