Quantifying the geographical distribution effect on decreasing aggregated nitrogen oxides intensity in the Chinese electrical generation system

JOURNAL OF CLEANER PRODUCTION

卷:222

Article

Wang, Junfeng^1,2  Qiu, Ye^1,2  Ma, Yupei^1,2  He, Shutong^1,2,3  Liu, Nan^1,2  Feng, Yinchang¹  Dong, Zhanfeng⁴  Liu, Lingxuan⁵ 

[1] Nankai Univ, Coll Environm Sci & Engn, Tianjin 300500, Peoples R China

[2] Nankai Univ, Res Ctr Resource Energy & Environm Policy, Tianjin 300500, Peoples R China

[3] Vrije Univ Amsterdam, Inst Environm Studies IVM, NL-1081 HV Amsterdam, Netherlands

[4] Chinese Acad Environm Planning, Beijing 100012, Peoples R China

[5] Univ Lancaster, Sch Management, Bailrigg LA1 4YX, Lancs, England

关键词: Aggregated NOx intensity;    Electricity generation;    LMDI;    Geographical distribution effect;    China;   

DOI  :  10.1016/j.jclepro.2019.03.101

来源: Elsevier

【 摘 要 】

Over the past 20 years, the spatial distribution of electrical generation and its relationship to cross regional power transmission has impacted China's power generation system and significantly affected the total amount of NOx and the aggregated nitrogen oxides intensity (ANI) of the system. An investigation of the driving mechanisms of ANI that considers the unevenness of regional electricity generation will be crucial to future improvements in the NOx efficiency of the electrical generation system in China. In this study, we built a decomposition model for ANI by incorporating the spatial distribution of electrical generation and found that the spatial distribution of electricity generation together with energy related factors gradually caused decreases in ANI. The efficiency of electricity generation presented the dominant inhibitory effect on ANI, but its effect size has weakened since 2010. In contrast, the fossil fuel structure of thermal power shows an increasingly positive effect on changes in ANI. The primary energy composition only slightly affected changes in ANI. Moreover, the changed geographical distribution of electricity generation is non-negligible and has a positive effect on reduction of the ANI of the Chinese electrical generation system. The transferred amount of local NOx emissions by cross-provincial electricity transmission, however, could cause lead to additional environmental costs for generators. This issue should receive more attention in the future. (C) 2019 Elsevier Ltd. All rights reserved.

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