摘要:研究城市碳循环过程并阐明能源对碳循环的影响，可为城市节能减排政策的制定和实施提供参考依据。基于城市碳循环模型核算了2005-2014年北京市的碳储量和碳通量，并通过能源碳效应指数来探讨能源对城市碳循环的影响。结果表明人为碳储量是北京市总碳储量增加的主要驱动力。北京市的碳输入主要来自水平方向，表明北京市的发展在很大程度上依赖于外部环境的物质供给；北京市的碳输出主要是能源消耗产生的垂直碳输出。能源活动相关的碳通量占北京市总碳通量的比重，即能源碳效应，在2006年高达79.46%，而后开始呈波动下降的趋势。能源对北京市碳循环影响最大的是垂直输出方向，其次是水平输入方向，因此低碳城市建设需要加强对垂直碳通量和水平碳通量的调节和管理，尤其是与能源活动相关的碳通量，与此同时，保护自然植被和增加生态用地对提高城市碳减排能力也至关重要。



Abstract:Studying the carbon process and clarifying the impact of energy on the carbon cycle, can provide a reference for the formulation and implementation of carbon emission reduction policies, especially in urban areas. In this study, we estimated the carbon storage and flux in Beijing from 2005 to 2014 based on the urban carbon cycle model and analysed the impact of energy on the urban carbon cycle using the energy carbon effect index. The results showed that the artificial carbon storage was the main driving force for the increase in the total carbon storage in Beijing. Horizontal input was the main carbon input in Beijing indicating that the development of Beijing strongly depended on the materials supplied from external environment. Vertical output was the main carbon output in Beijing in the form of energy consumption. The carbon flux related to energy activities accounted for the total carbon flux in Beijing, namely the carbon effect of energy, was as high as 79.46% in 2006, then the ratio began to show a trend of fluctuating decline. The greatest impact of energy on Beijing's carbon cycle was from a vertical output direction, followed by a horizontal input direction. Therefore, strengthening the regulation and management of vertical carbon flux and horizontal carbon flux would be needed for city construction to lower carbon emissions. At the same time, it is important for Beijing to protect natural vegetation and increase ecological land area to enhance the city's carbon emission reduction capacity.





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