Compilation of an Embodied CO2 Emission Inventory for China Using 135-Sector Input-Output Tables

Sustainability

Qian Zhang¹  Jun Nakatani²  Yuichi Moriguchi² 

[1] Department of Urban Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

关键词: embodied CO₂ intensity;    energy allocation;    indirect emission;    environmental input-output analysis;   

DOI  :  10.3390/su7078223

来源: mdpi

【 摘 要 】

A high-quality carbon dioxide (CO₂) inventory is the cornerstone of climate change mitigation. Most of the previously reported embodied CO₂ inventories in China have no more than 42 sectors, and this limitation may introduce apparent inaccuracy into the analysis at the sector level. To improve the quality of input-output (IO)-based CO₂ inventories for China, we propose a practical energy allocation approach to link the energy statistics to the 135-sector IO tables for China and compiled a detailed embodied CO₂ intensity and inventory for 2007 using a single-region IO model. Interpretation of embodied CO₂ intensities by fuel category, direct requirement, and total requirement in the sectors were conducted to identify, from different perspectives, the significant contributors. The total embodied CO₂ emissions in 2007 was estimated to be 7.1 Gt and was separated into the industrial sector and final demand sector. Although the total CO₂ estimations by the 42-sector and 135-sector analyses are equivalent, the allocations in certain groups of sectors differ significantly. Our compilation methodologies address indirect environmental impacts from industrial sectors, including the public utility and tertiary sectors. This method of interpretation could be utilized for better communication with stakeholders.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.