Resources Science ›› 2021, Vol. 43 ›› Issue (4): 756-763.doi: 10.18402/resci.2021.04.10

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Carbon emissions of China’s nonferrous metal industry from the view of industrial chain and provincial differences

QU Qiushi1,4, WANG Limao2,3(), WANG Bo2,3, XIANG Ning2,3   

  1. 1. School of Economics, Hebei University of Geosciences, Shijiazhuang 050031, China
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
    3. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
    4. Regional Economic Sustainable Development Research Center, Hebei University of Geosciences, Shijiazhuang 050031, China
  • Received:2020-06-22 Revised:2020-11-12 Online:2021-04-25 Published:2021-06-25
  • Contact: WANG Limao

Abstract:

Nonferrous metal industry is one of the high energy consumption and emission sectors, also an important part of the realization of China’s 2030 carbon emission reduction target. Reducing carbon emissions is the key to develop the nonferrous metal industry sustainably. From the perspective of different sectors in the nonferrous metal industry, this study chose carbon emissions and carbon intensity to reveal the spatial and temporal differences in different sectors of the industry. The super efficiency slack-based measure-data envelopment analysis (SBM-DEA) model was built to evaluate the scale of carbon emission reduction. The research results show that: (1) From 2006 to 2016, the CO2 emissions of non-ferrous metal mining, smelting and processing industries were all increasing, and the carbon emission intensity was stable with a decrease.Nonferrous metal smelting and processing industry is the key sector of the nonferrous metal industry to achieve the carbon emission reduction target, with a total emission reduction scale of about 71.43 MtCO2, accounting for more than 90% of the total carbon emission reduction of nonferrous metal industry. (2) Due to the different geographical environment and production conditions, different provinces face different levels of carbon emission reduction. In the mining sector, Sichuan Province has a carbon emission reduction scale of about 0.97 MtCO2 and needs to be paid more attention. In the smelting and processing sector, Guangxi province has high carbon emissions and carbon intensity. While Shandong and Henan Provinces own more carbon emission reduction potential, with a carbon emission reduction scale of about 11.21 MtCO2 and 11.22 MtCO2, respectively, together accounting for 31% of the total carbon emission reduction scale in this sector. (3) Above all, Inner Mongolia, Henan, and Shandong play more important role in the carbon emission reduction of the nonferrous metal industry in China. The nonferrous metal smelting and processing industry is important for reducing the carbon emissions in those provinces. The quantitative assessment of carbon emission reduction potential in different production sectors and regions of non-ferrous metals can not only provide a basis for the formulation of carbon emission reduction policies, but also provide a reference for the formulation of carbon emission reduction policies to provinces.

Key words: carbon emissions, carbon reduction potential, industrial chain, spatiotemporal differences, slack-based measure (SBM) model, nonferrous metals, China