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Discrepancy originated from intensity vector in embodied energy accounting
اختلاف ناشی از بردار شدت در حسابداری انرژی تجسم شده است-2021 Global climate change has made human pursuit of sustainable development goals more urgent and specific, with
increasing studies focused on environmental embodiment or footprint issues. As a key link in embodied energy
accounting, energy intensity vector has received little attention although its variants can lead to huge discrep-
ancies in interpreting results and the corresponding policy implications. This work performs a comparative study
to inform the choice of energy intensity vector in input-output modelling. We construct 4 energy intensity vectors
varying from methodology and data source, and compare their performances in terms of sectoral and regional
responsibility, energy embodied in international trade both in an original and uniform framework. It is
concluded that the choice of energy intensity is a process of determining system boundary, and trade-off should
be made between detailed actual energy flow and implication about energy-economy nexus. Energy sectors
dominate the generation of intensity vector, processing of exogenous energy data, especially the part from
household direct use and transformation efficiency loss may cause a huge accounting deviation. Although
different vectors may give varying sectoral embodied energy, the discrepancy in regional total, in particular,
consumption-based accounting is much less. Our discussion can be further applied to other embodied resource
accounting or environmental extension.
keywords: گسترش انرژی | انرژی تجسم یافته | ورودی-خروجی توسعه یافته محیطی | ردپای انرژی | چند منطقه ای | چین | Energy extension | Embodied energy | Environmentally extended input-output | Energy footprint | Multi-regional | China |
مقاله انگلیسی |