中国交通运输碳排放时空演变及差异分析

核算了2003—2012年间中国30个省域的交通运输碳排放量和碳排放强度,分析了交通运输碳排放时空演变规律,分别计算了中国东、中、西部的交通运输碳排放量和碳排放强度的标准差和变异系数以定量分析其差异.结果表明:2003—2012年10年间,中国30个省域交通运输碳排放量呈逐年增长趋势,并整体呈现"西低东高"的特征,其中,湖北、广东和山东三省的总量居前3位,而内蒙古、吉林和重庆这3个省份(直辖市)的增速最快;交通运输碳排放强度整体上全国呈增长趋势,呈现出"西高东低"的非均衡变化特征;交通运输碳排放强度绝对差异增速趋缓,自2008年后三大区域的标准差和变异系数都呈现明显趋同效应.

Spatiotemporal evolution and difference of transport carbon emissions in China

This paper estimates the transport carbon emission and carbon intensity of 30 provinces in China from 2003 to 2012, and further analyses the spatiotemporal evolution of transport carbon emissions. The standard deviations and variation coefficients of transport carbon emissions and carbon intensity are calculated for the eastern, central and western region, respectively, and the differences of transport carbon emissions among these regions are quantified. The results show that between 2003 and 2012, there is a consistent growing trend on transport carbon emissions for all 30 provinces in China. Overall, the increase in western region is lower than that of the eastern. In terms of total growth over the ten years, Hubei, Guangdong and Shandong are the top three provinces, while Inner Mongolia, Jilin and Chongqing are the top three provinces for the growth rate. In addition, transport carbon intensity also shows a growing trend. The unbalanced variation is observed with western region having higher growth rate than eastern region. The absolute difference in growth rate is decreasing. The absolute difference and relative difference convergence since 2008.