异质性技术创新对碳强度的影响——基于全球专利数据

The Impact of Heterogeneous Technological Innovation on Carbon Intensity—A Global Evidence based on Patent Statistics

基于全球专利数据库(PATSTAT),采用高价值专利统计方法,测算各国在汽车、燃料、照明和能源生产四大领域内清洁技术和污染技术的创新水平;再利用1996—2011年全球15个经济体的面板数据,分析不同类别技术创新对碳强度的影响。实证结果显示:在汽车、燃料、照明和能源生产4个领域内,中国清洁技术和污染技术的创新指标皆呈现出上升趋势,且前者提升速度更快。不同类别技术创新对碳强度的影响存在差异,即清洁技术创新存在显著的抑制作用,污染技术创新存在显著的促进作用,且碳强度变化对后者的敏感性更高。为了避免清洁技术创新的碳强度抑制效果被污染技术创新所抵消,有必要将经济资源更多地配置于清洁技术研发活动中,并逐步消除对污染技术创新的政策支持。

Using a statistical method of high-value patent and raw data from PATSTAT,this paper calculates the clean and dirty innovation level of different countries,in terms of technologies in fields of car, fuel,lighting and energy production. This paper then investigates the impacts of clean and dirty technological innovation on carbon intensity,by using a panel data of 15 economies from 1996 to 2011. The results show that,there are increasing trends of levels of China＇s clean and dirty technological innovation,the impacts of different types of technology on carbon intensity are heterogeneous. Specifically,clean technological innovation has a significant negative effect on carbon intensity,whereas dirty innovation has a positive effect,and the change of carbon intensity is more sensitive to dirty innovation.