中文摘要：

本文基于方向性距离函数提出碳生产力变化的六重分解法，从国际比较的视角研究未来中国消减碳强度的路径选择。主要结论有：1980-2008年技术进步与资本累积推动了0ECD国家碳生产力的增长，影响中国碳生产力增长的首要因素是源于技术效率的改进，其次是技术进步；偏向于重化工业的资本累积不利于碳生产力的增长，持续有效地改进技术效率和推动技术进步以缩小与发达国家的环境技术差距，应当成为未来中国消减碳强度的主要政策着力点；实证检验表明，优化能源结构、开展国际贸易以及推进产业结构升级对提升环境技术水平有积极意义。

英文摘要：

Based on the directional distance function, we give a sixfold decomposition method to measure the changes in carbon productivity and study the path selection for reducing carbon intensity in the future in China on an international comparison perspective. The main conclusions include： over the period of 1980-2008, technological advance and capital accumulation promote the growth in carbon productivity of OECD nations, and the primary factor which influences the growth in China＇ s carbon productivity is the improvement of technological efficiency, and the second factor is technological advance; capital accumulation biased to heavy chemical industry does not benefit the growth in carbon productivity, and future policies to reduce carbon intensity in China should consider more on the improvement of technological efficiency and the promotion of technological advance continuously and efficiently so as to decrease the gap in environmental technological with the developed countries; and that em- pirical test shows that to optimize energy structure, develop international trade and promote industrial structure is positive to im- prove environmental technology level.