Carbon Emissions and Carbon Intensity in China’s Exports: A Contrast of SRIO and GIRIO Methods
AbstractThis paper compares differences between single regional input-output (SRIO) model and global interregional IO model (GIRIO) used in the area of carbon emission embodied in exports under global supply chain, and decomposes carbon emissions and carbon intensity in exports according to export path based on KWW (2014). Empirical analysis in China’s exports in 1995, 2000, 2005 and 2009 shows: 1) GIRIO model yielded about 2.11% less domestic emissions absorbed abroad, 0.8% more domestic emissions in exports, 1.5 times more foreign emissions in exports in 2009, compared to SRIO model. 2) USA and EU absorb most carbon emissions in China’s exports, but with declining share. Increasing domestic emissions firstly exported to developing countries but finally returned home and emissions from developing countries in China’s exports show their contribution from developing countries. Discrepancies between bilateral carbon emissions flows changes and direct trade flows changes suggest indirect carbon emissions transfer by third parties are neglected in SRIO model. 3) Despite dramatic decrease, China still bears 1.52 times more carbon emissions per GDP gained than foreign countries in fragmentation of China’s exports production in 2009, indicating different roles in production fragmentation.