Accounting For The Overall Carbon Emission Allowance And Its Cross-administrative Regional Allocation

Carbon emission allowance(CEA)has been increasingly identified as a type of scarce public resources that lay the basis for human well-being and socioeconomic development.This highlights the signijficance of climate governance particularly given the fact that global warming has been exacerbated by human activities over the past decades.In this sense,allocating CEA in a rational and scientific way is considerably essential for achieving China's Intended Nationally Determined Contributions(INDCs)and limiting the increase in average global temperature well below 2 ?.Numerous studies have been conducted that make use of various principles and approaches for CEA allocation,whereas the rationale of these approaches remains ambiguous.Moreover,few research focuses on the city-wide allocation.To close this gap,this paper first constructs a CEA allocation system entailing four principles(e.g.,the equity,efficiency,feasibility and sustainability)and suites of indicators.Three prevailing approaches including the composite index method,zero sum gains-data envelopment analysis(ZSG-EDA)method and Shapley value method are introduced for allocating the CEA of Zhejiang P:rovince to 11 prefectural cities for the period 2016-2030,respectively.It ends up with the projection of carbon emission space for cities by comparing their CEA and current carbon emissions.The analysis is indented not only to ensure the equity of the cross-administrative allocation but also to improve the efficiency,feasibility and sustainability of allocation simultaneously.More importantly,our study manages to bring transparency to the impacts of the dififerent approaches on the results.The findings are informative for the assignment of emission reduction task for Zhejiang Province and other regions,and could serve as a reference for further studies.