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利用非竞争型投入产出表提出了需求侧的全球完全碳排放强度度量方法,建立了经济体维度和最终需求类型维度变化的贡献率分解模型,以及包含碳排放系数、中间投入技术结构、增加值系数和最终需求4类影响因素的结构分解模型,分析了1998-2007年全球主要经济体和代表性国家的碳排放强度变化.结果表明:全球完全碳排放重心向发展中国家转移,完全增加值重心在发达国家,完全碳排放强度下降主要贡献仍来自欧盟和北美自贸区.各国消费的完全碳排放强度均小于出口和投资的完全碳排放强度,并带动了整体完全碳排放强度的下降。碳排放系数仍是促进需求侧碳排放强度下降的主导因素,其他3类因素对不同国别不同类型的完全碳排放强度影响效果不一,其中在出口的完全碳排放强度中表现出更为显著的国别差异.
Based on the non-competitive input-output table, a global carbon emission intensity measurement method on the demand side is proposed. The contribution rate decomposition model of the change in the dimensions of the economy and the final demand type is established. The carbon emission factor, intermediate input technology structure, Value coefficient and final demand, we analyzed the changes of carbon intensity in the world’s major economies and representative countries from 1998 to 2007. The results show that the global carbon emission center of gravity shifts to developing countries and increases completely Value center of gravity In developed countries, the main contributor to the decline in total carbon intensity still comes from the EU and the North American Free Trade Area. The complete carbon emissions intensity of consumption in all countries is less than the full carbon emission intensity of exports and investment, and the overall carbon emission intensity is driven down . The carbon emission coefficient is still the dominant factor to promote the reduction of carbon intensity on the demand side. The other three types of factors have different effects on the different types of complete carbon emissions intensity in different countries. Among them, the emission intensity of export shows more significant The country differences.