基于能源代谢分析的南昌市能源消费碳排放综合生态效率研究

有关能源消费的代谢机理及生态效率研究是当前生态经济研究领域中的重点和难点,也是政府决策部门、相关行业及人群关注的热点。基于能源代谢分析理念,构建了基于相对变量的城市能源消费碳排放综合生态效率度量模型,对2000—2013年南昌市能源消费结构、碳排放量及其生态效率进行了测算与分析。结果表明:(1)南昌市在2000—2013年,能源消费量和碳排放量整体上呈"N"型曲线上升的一致性变化特征,主要经历了快速增长、短暂下降、恢复平稳增长3个阶段,且煤炭是南昌市能源消费和碳排放的主要来源,短时期内难以改变;(2)南昌市的能源消费效率和碳排放效率整体上在不断优化;(3)南昌市能源消费碳排放综合生态效率经历了较大的波动变化,整体上的生态效率分值并不高;仍需要加大节能减排力度,全面优化南昌市能源消费结构。

EMA-based analysis on the eco-efficiency of carbon emission of energy consumption:A case study of Nanchang

Eco-efficiency of carbon emissions derived from energy consumption is a key issue in the field of ecological economic research, as well as a hot topic that has attracted government decision-making departments and has caught the attention of industry professionals and the public. Based on the concept of energy metabolic analysis (EMA), the ecological efficiency measurement model of carbon emissions from city energy consumption was established, and the energy consumption and carbon emissions of Nanchang from 2000 to 2013 were calculated and analyzed. The eco-efficiency of carbon emissions from energy consumption in Nanchang was also analyzed. The results showed that:(1) In 2000-2013, the energy consumption and carbon emissions of Nanchang had been increasing as an N-shape curve on the whole, mainly exhibiting three stages, including rapid growth, short-term decline, and steady growth. Coal was the main source of the city''s energy consumption and carbon emissions, which would be difficult to change in the short term; (2) The energy consumption efficiency and carbon emission efficiency of Nanchang were improving on the whole; (3) The comprehensive ecological efficiency of energy consumption in Nanchang did not greatly improve, suggesting the ongoing need to increase the intensity of energy-saving emission reduction efforts, and to optimize the energy consumption structure.