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Dynamic Changes in Carbon Sequestration from Opencast Mining Activities and Land Reclamation in China’s Loess Plateau

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  • Boyu Yang

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China)

  • Zhongke Bai

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China
    Key Lab of Land Consolidation and Rehabilitation, the Ministry of Natural Resources, Beijing 100035, China)

  • Yingui Cao

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China
    Key Lab of Land Consolidation and Rehabilitation, the Ministry of Natural Resources, Beijing 100035, China)

  • Feng Xie

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China)

  • Junjie Zhang

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China)

  • Yannan Wang

    (School of Land Science and Technology, China University of Geosciences, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China)

Abstract

Opencast coal mining causes serious damage to the natural landscape, resulting in the depletion of the carbon sequestration capacity in the mining activity. There are few studies on the variation of carbon sequestration capabilities caused by land use changes in opencast mining areas. This paper uses six images were used to quantify the changes in land use types from 1986 to 2015 in the Pingshuo mining area in northwest China. At the same time, used statistical analysis and mathematical models to study soil and vegetation carbon sequestration. Results indicate that the total carbon sequestration exhibits a significant downward trend from 4.58 × 10 6 Mg in 1986 to 3.78 × 10 6 Mg in 2015, with the decrease of soil carbon sequestration accounting for the largest proportion. The carbon sequestration of arable land accounted for 51% of the total carbon sequestration in the mining area, followed by grassland (31%) and forestland (18%). Land reclamation contributed to the greatest increase in carbon sequestration of arable land from 17,890.15 Mg (1986) to 27,837.95 Mg (2015). Additionally, the downward trend in the carbon sequestration capacity of the mining ecosystem was mitigated after 2010 as the positive effects of land reclamation gradually amplified over time and as the mining techniques were greatly optimized in recent years in the Pingshuo mining area. Thus, terrestrial carbon sequestration can be improved through land reclamation projects and optimized mining activities. These results can help guide the utilization of reclaimed land in the future.

Suggested Citation

  • Boyu Yang & Zhongke Bai & Yingui Cao & Feng Xie & Junjie Zhang & Yannan Wang, 2019. "Dynamic Changes in Carbon Sequestration from Opencast Mining Activities and Land Reclamation in China’s Loess Plateau," Sustainability, MDPI, vol. 11(5), pages 1-16, March.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:5:p:1473-:d:212581
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    References listed on IDEAS

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    1. Shao, Shuai & Liu, Jianghua & Geng, Yong & Miao, Zhuang & Yang, Yingchun, 2016. "Uncovering driving factors of carbon emissions from China’s mining sector," Applied Energy, Elsevier, vol. 166(C), pages 220-238.
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    Cited by:

    1. Shuai Fu & Zhongke Bai & Boyu Yang & Lijun Xie, 2022. "Study on Ecological Loss in Coal Mining Area Based on Net Primary Productivity of Vegetation," Land, MDPI, vol. 11(7), pages 1-18, July.
    2. Diana Turrión & Luna Morcillo & José Antonio Alloza & Alberto Vilagrosa, 2021. "Innovative Techniques for Landscape Recovery after Clay Mining under Mediterranean Conditions," Sustainability, MDPI, vol. 13(6), pages 1-18, March.

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