Abstract
Extreme climatic events are likely to adversely affect many countries throughout the world, but the degrees among countries may be different. China and Japan are the countries with high incidences of extreme weather/disaster, both facing with the urgent task of addressing climate change. This study seeks to quantitatively compare the impacts of extreme climatic events on socioeconomic systems (defined as vulnerability) of the two countries by simulating the consequences of hypothetical same degree of electricity disruption along with extreme events. To do that, two computable general equilibrium models are constructed, by using which three-stage scenarios are simulated for China and Japan, respectively. The results reveal that China and Japan have unequal socioeconomic vulnerabilities to extreme events. (1) Negative impact of the same degree of power outages is bigger on China’s socioeconomic system than on that of Japan, and this difference is more obvious in the very short-run scenario. (2) The decline of China’s GDP, total output, and employment levels is 2–3 times higher than that of Japan, while the difference of the resident welfare levels is sharper, which of China drops 3–5 times of Japan. (3) Structural factors are the main reason for vulnerability differences between China and Japan, including the differences of expenditure structure, factor input structure for production of life requirement sectors, material and energy dependence for the production of industrial sectors, and usage structure of services outputs. Based on these findings, some policy implications and recommendations for fairness issues on climate change adaptation are proposed.
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Notes
Although we cannot assure the modeling accuracy proposed by Rose and Guha (2004), especially on the stage parameter setting, just as mentioned by its authors it is deemed that this kind of accuracy problem is absolutely not of mortality unless the response function is extremely nonlinear. Moreover, our key point in this study is just to compare the response features of different economies, so it is believed that this modeling scheme is rational enough.
Capital of power sector is reduced by 48.7 and 45.1 % under the base cases in China and Japan, respectively. The simulation results from Rose and Guha (2004) show that the largest capital reduction after earthquake in that region is 44.8 %. Moreover, we also conduct the cases of 15 and 25 % power outage as a sensitivity analysis, and the results not vary largely. Thus, there is reason to believe that the simulated cases are very likely to occur under the pressure of extreme events.
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Acknowledgments
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China under Grant Nos. 71020107026, 71001007, and 71203008, the Program for New Century Excellent Talents in University under the Grant No. NCET-12-0039, the National Key Technology R&D Program under the Grant No. 2012BAC20B01, and the National Basic Research Program of China under the Grant No. 2012CB955704. The authors also would like to thank Dr. Hua Liao for his suggestions on an earlier version. We also would like to thank Professor Tad Murty and the anonymous referees for their helpful suggestions and corrections on the earlier draft of our paper according to which we improved the content.
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Fan, JL., Liang, QM., Liang, XJ. et al. National vulnerability to extreme climatic events: the cases of electricity disruption in China and Japan. Nat Hazards 71, 1937–1956 (2014). https://doi.org/10.1007/s11069-013-0986-2
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DOI: https://doi.org/10.1007/s11069-013-0986-2