Analyzing determinants that influence polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran（PCDD/F） emissions is helpful for decision-makers to find effective and efficient ways to mitigate PCDD/F emissi...Analyzing determinants that influence polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran（PCDD/F） emissions is helpful for decision-makers to find effective and efficient ways to mitigate PCDD/F emissions. The PCDD/F emissions and the contributions of the scale effect, structure effect and technology effect to emissions from eight main industrial sectors in2006, 2008 and 2010 in Shandong Province, were calculated in this article. Total PCDD/F emissions in Shandong increased by 52.8% in 2008（614.1 g I-TEQ） and 49.7% in 2010（601.8 g I-TEQ） based on 2006（401.9 g I-TEQ）. According to the decomposition method, the largest influencing factor on PCDD/F emission changes was the composition effect（contributed 43.4%in 2008 and 120.6% in 2010 based on 2006）, which was also an emission-increasing factor.In this case, the present industrial restructuring policy should be adjusted to control the proportion of production capacities with high emission factors, such as iron ore sintering and steelmaking and the secondary non-ferrous metal sector. The scale effect increased the emissions in 2008（contributed 21.9%） and decreased the emissions in 2010（contributed-28.0%）. However, as a source control measure, the excess capacity control policy indeed had a significant role in emission reduction. The main reason for the technology effect（contributed 34.7% in 2008 and 7.4% in 2010 based on 2006） having an emission-increasing role was the weakness in implementing policies for restricting industries with outdated facilities. Some specific suggestions were proposed on PCDD/F reduction for local administrators at the end.展开更多
Climate change has become one of the most serious challenges facing humanity; developing a low- carbon economy provides new opportunities for addressing this issue. Building a low-carbon city has been pursued by peopl...Climate change has become one of the most serious challenges facing humanity; developing a low- carbon economy provides new opportunities for addressing this issue. Building a low-carbon city has been pursued by people with a high degree of enthusiasm in China. Different from actions at the national level and distinct from practices of developed countries, low-carbon development in Chinese cities should be placed on diverse concerns. Taking Suzhou of Jiangsu Province of China as a case city, this paper adopts a scenario analysis approach to explore strategic focal points in the transition to a low- carbon city. Within this transition, we mainly focus on the different contributions from two factors-economic restruc- turing and technological upgrading. Scenario analysis results show that 1） in the case of no breakthrough technologies, it is difficult to achieve absolute emission reductions; 2） technologies involved in optimizing energy structure and improving energy efficiency of basic service sectors should be highly emphasized in local planning; 3） in comparison with technological upgrading, economic structural adjustment could be a stronger contributor to mitigation, which is one of the main differences from developed countries. However, the key issue of economic restructuring is to promote the growth of emerging low- carbon industries, which requires not only a strategic choice of new industries but also an introduction of advanced low-carbon technologies. It is also found that establishing a local carbon emissions accounting system is a prerequisite and the first priority for realizing a low-carbon transition and government capacity buildings should be strengthened accordingly.展开更多
基金financed primarily by the International Science & Technology Cooperation Program of China (No. 2012DFA91150)the Chinese Academy of Sciences under Grant No. KZZD-EW-TZ-12the National Natural Science Foundation of China (No. 41371488, 41171394)
文摘Analyzing determinants that influence polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran（PCDD/F） emissions is helpful for decision-makers to find effective and efficient ways to mitigate PCDD/F emissions. The PCDD/F emissions and the contributions of the scale effect, structure effect and technology effect to emissions from eight main industrial sectors in2006, 2008 and 2010 in Shandong Province, were calculated in this article. Total PCDD/F emissions in Shandong increased by 52.8% in 2008（614.1 g I-TEQ） and 49.7% in 2010（601.8 g I-TEQ） based on 2006（401.9 g I-TEQ）. According to the decomposition method, the largest influencing factor on PCDD/F emission changes was the composition effect（contributed 43.4%in 2008 and 120.6% in 2010 based on 2006）, which was also an emission-increasing factor.In this case, the present industrial restructuring policy should be adjusted to control the proportion of production capacities with high emission factors, such as iron ore sintering and steelmaking and the secondary non-ferrous metal sector. The scale effect increased the emissions in 2008（contributed 21.9%） and decreased the emissions in 2010（contributed-28.0%）. However, as a source control measure, the excess capacity control policy indeed had a significant role in emission reduction. The main reason for the technology effect（contributed 34.7% in 2008 and 7.4% in 2010 based on 2006） having an emission-increasing role was the weakness in implementing policies for restricting industries with outdated facilities. Some specific suggestions were proposed on PCDD/F reduction for local administrators at the end.
文摘Climate change has become one of the most serious challenges facing humanity; developing a low- carbon economy provides new opportunities for addressing this issue. Building a low-carbon city has been pursued by people with a high degree of enthusiasm in China. Different from actions at the national level and distinct from practices of developed countries, low-carbon development in Chinese cities should be placed on diverse concerns. Taking Suzhou of Jiangsu Province of China as a case city, this paper adopts a scenario analysis approach to explore strategic focal points in the transition to a low- carbon city. Within this transition, we mainly focus on the different contributions from two factors-economic restruc- turing and technological upgrading. Scenario analysis results show that 1） in the case of no breakthrough technologies, it is difficult to achieve absolute emission reductions; 2） technologies involved in optimizing energy structure and improving energy efficiency of basic service sectors should be highly emphasized in local planning; 3） in comparison with technological upgrading, economic structural adjustment could be a stronger contributor to mitigation, which is one of the main differences from developed countries. However, the key issue of economic restructuring is to promote the growth of emerging low- carbon industries, which requires not only a strategic choice of new industries but also an introduction of advanced low-carbon technologies. It is also found that establishing a local carbon emissions accounting system is a prerequisite and the first priority for realizing a low-carbon transition and government capacity buildings should be strengthened accordingly.
