Mechanism, potential and regulation of carbon sequestration and sink enhancement in ecological restoration of mining areas in the Loess Plateau

被引：0
|
作者：
Chen F. [1 ,2 ]
Zhu Y. [2 ]
Ma J. [1 ]
Dong W. [3 ]
You Y. [2 ]
Yang Y. [2 ]
机构：
[1] School of Public Administration, Hohai University, Nanjing
[2] Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou
[3] School of Chemical Engineer and Technology, China University of Mining and Technology, Xuzhou
来源：
Meitan Kexue Jishu/Coal Science and Technology (Peking) | 2023年 / 51卷 / 01期
关键词：
carbon neutrality; carbon sink potential; ecological carbon sink; ecological restoration of mining areas; loess plateau; regulation mechanism;
D O I：
10.13199/j.cnki.cst.2023-2250
中图分类号：
学科分类号：
摘要：
The ecological environment of mining areas in the Loess Plateau is extraordinary fragile, so it is crucial to achieve the carbon neutral vision to scientifically understand the mechanism and potential of carbon sequestration and sink enhancement in ecological restoration of mining areas in the Loess Plateau. Therefore, it is necessary to explore the key processes of carbon sink formation, the adaptability and resilience of restoration, and the potential of increasing carbon sink in the ecological restoration of the mining area in the Loess Plateau, as well as reveal the stability mechanism of the carbon pool in the reclaimed soil of the mining area. Finally, the key technologies of carbon fixation and sink enhancement in the ecological restoration of the mining area are clarified and elucidated. The results showed that: ① The critical processes of carbon sink formation in ecological restoration of mining areas in the Loess Plateau included plant photosynthetic carbon allocation, soil carbon sequestration, microbial carbon sequestration, soil respiration and so on; ② The ecological restoration adaptability of the mining areas in the Loess Plateau generally presented a trend of high in the southeast and low in the northwest, while the areas with poor adaptability were mainly distributed at the border between northern Shanxi and Inner Мongolia, as well as between central Ningxia and Inner Мongolia. The order of ecological resilience of typical mining areas was shown as follows: Мixed forest (43.2%-100.0%) > Broad-leaved forest (49.2%-83.2%) > Coniferous forest (47.9%-76.5%) > Grassland (39.1%-70.7%) > Shrub grassland (43.0%-69.0%). There was a positive correlation between the remediation years and soil carbon sink potential. The highest carbon sink potential generally occurred at 10-15 years of restoration. The mixed forests spent the longest ecological restoration time, but possessed the largest carbon sequestration potential; ③ The stability mechanism of reclaimed soil carbon pool was related to litter decomposition, clay mineral interaction, aggregate physical protection and microbial regulation; ④ The coupling repair technology including landform reconstruction, soil reconstruction, pioneer plant/microorganism and exogenous material is the optimal path for ecological restoration of coal mining areas in the Loess Plateau to fix carbon and increase carbon sink, and it is also conducive to the long-term stability and improvement of carbon sink. © 2023 Coal Science and Technology. All rights reserved.
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页码：502 / 513
页数：11
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  • [2] ZHU Lei, GU Wenzhe, SONG Tianqi, Et al., Research progress and prospect of coal gangue slurry filling technology in goaf, Coal Science and Technology, pp. 1-12
  • [3] LI Xiaoxiao, LUO Zhanbin, МA Jing, Et al., Response of coal mining bacterial community to surface subsidence and land reclamation in the Loess Plateau, Environmental Chemistry, 39, 5, pp. 1384-1394, (2020)
  • [4] BAI Zhongke, ZHOU Wei, WANG Jinman, Et al., Rethink on ecosystem restoration and rehabilitation of mining areas, China Land Science, 32, 11, pp. 1-9, (2018)
  • [5] CHEN Fu, ZHAO Jiao, МA Jing, Et al., Effects of vegetation restoration on functional groups related to soil carbon, nitrogen and phosphorus cycles in open-pit mining area of the loess plateau, Acta Pedologica Sinica, pp. 1-13
  • [6] CHEN Fu, WANG Siyao, YU Haochen, Et al., Technological innovation paths of coal industry for achieving carbon neutralization, Journal of China Coal Society, 47, 4, pp. 1452-1461, (2022)
  • [7] CHEN Fu, ZENG Siyan, YANG Yongjun, Et al., Guiding on current ecological restoration in post-mining area from the perspective of rural revitalization, Environmental Protection, 46, 12, pp. 39-42, (2018)
  • [8] LI Zhilan, Soil nutrients, enzyme activity and microbe quantity in reclaimed soil in mining area, Bulletin of Soil and Water Conservation, 35, 2, pp. 6-13, (2015)
  • [9] HU Zhenqi, ZHANG Zixuan, SUN Huang, Geological soil formation for ecological restoration of mining areas and its case study, Coal Geology and Exploration, 50, 12, pp. 21-29, (2022)
  • [10] ZHANG Zhao, BAI Zhongke, HE Zhenwei, Et al., Dynamic changes of land use type and carbon sinks based on RS and GIS in Pingshuo opencast coal mine, Transactions of the Chinese Society of Agricultural Engineering, 28, 3, pp. 230-236, (2012)
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