| Summary: | 碩士 === 國立臺北科技大學 === 環境規劃與管理研究所 === 93 === In an eco-society, strategies of CO2 reduction should be developed in accordance with all aspects of engineering, pricing, and the impact to ecology. This research established decision support tools in terms of ecological footprint and eco-efficiency for CO2 reduction.
The ecological footprint of CO2 will be calculated to illustrate the emission and absorption of CO2 in Taiwan. Results showed that the CO2 ecological footprint in Taiwan was 28,574,632 hectare, which was 7.9 times of Taiwan area. It means 7.9 Taiwan areas is needed to absorb the CO2 emission each year. This CO2 ecological footprint was used as a basis of the calculation of CO2 eco-cost.
Eco-efficiency evaluation system was developed for industrial CO2 reduction in this research, which involves the capital cost, the savings of fuel cost and pollution treatment cost (interior cost), and the monetized ecological benefits (eco-cost, external cost) due to the prevention of environment and ecological impacts.
Finally, CO2 reduction strategies of pulp/paper industry and iron/steel industry in 2002 were studied to evaluate the eco-efficiency. The economic benefits of pulp/paper industry were -NT$4.32 million. The eco-efficiency of pulp/paper industry was NT$31.047 million/ton CO2. The economic benefits of iron/steel industry were NT$261.407 million, and the eco-efficiency was NT$23.766 million/ton CO2. Comparing with the case without considering the eco-cost, the eco-efficiency of these two industries were reduced by 11.4% and 14.3%. It shows that the traditional eco-efficiency is overestimated and do not respond for the environment and ecological impacts. Industry with low eco-efficiency should be given high priority to adopt the CO2 reduction measures because the great eco-efficiency improvement
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