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由于温室气体大量排放引起的全球气候变化已经严重影响了人类社会的生存与发展，二氧化碳减排问题成为学术界十分关注的热点问题。本文利用1993．2006年度，70个国家（地区）的面板数据，研完了人口、经济、技术对世界整体及不同发展水平国家（地区）二氧化碳排放的影响。结果表明，二氧化碳排放的国家间差异呈扩大趋势，对于不同发展水平国家（地区），人口、经济、技术对二氧化碳排放的影响是不一样的，同时也证实了经济快速增长是世界二氧化碳排放增加最主要的驱动因素。“,”As a result of a large number of emissions of greenhouse gases, global climate change is already having a serious impact on the survival of human society and development, carbon dioxide emission reduction has become a hot issue which is concerned by academic community. Using the panel data set of 70 countries （regions） covering the years of 1993 to 2006, this paper researches on the influence of population, economy, technology to carbon dioxide emission including the whole world and different level countries （regions）. The results showed that carbon dioxide emissions differences of inter-country is becoming expansile. To different level countries （regions）,the influence of population, economy, technology is different.Also the result confirms the rapid economic growth is the main driving factor of world carbon dioxide emissions.