| Issue |
E3S Web Conf.
Volume 630, 2025
2025 International Conference on Eco-environmental Protection, Environmental Monitoring and Remediation (EPEMR 2025)
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|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 8 | |
| Section | Ecosystem Resilience and Sustainable Futures under Climate Change | |
| DOI | https://doi.org/10.1051/e3sconf/202563002006 | |
| Published online | 22 May 2025 | |
Evaluation of Carbon Sequestration Benefits of Ecological Restoration in Open Pit Mines —— A Case Study of Tongluo Mountain Mine
1 Observation and Research Station of Ecological Restoration for Chongqing Typical Mining Areas，Ministry of Natural Resources, Chongqing Institute of Geology and Mineral Resources, 401120, Chongqing, China
2 College of Resources and Safety Engineering, Chongqing University, Chongqing, 400030, China
3 Wansheng Mining Area Ecological Environment Protection and Restoration of Chongqing Observation and Research Station, Ministry of Natural Resources, Chongqing Institute of Geology and Mineral Resources, 401120, Chongqing, China
* Corresponding author's email: licheng2025@163.com
The study takes Tongluo Mountain Mine in Chongqing as the test site, the plant and soil carbon sinks of different ecological restoration land use types were measured and the main influencing factors were analysed by means of plant investigation, plant biomass measurements, soil physicochemical property tests and model simulations. The main conclusions of the study are as follows:(1) The carbon sink per unit area of plant (4.65 kg C/m2), the carbon sink per unit area of soil (4.36 kg C/m2), the total carbon sink (574.39 t C), the carbon sink of vegetation (36.77 t C), and the carbon sink of soil (538.79 t C) are higher, but the carbon sink per unit area of vegetation is lower (0.29 kg C/m2). The carbon sink of mine ecological restoration mainly comes from soil carbon sink, and the carbon sink per unit area of soil (4 kg/m2) is 8 times higher than that of vegetation (0.5 kg/m2).;(2) The main influencing factors of vegetation carbon sink are vegetation growth, and the main influencing factors of soil carbon sink are soil organic matter and soil fertility;(3) In the ecological restoration of open-pit mines, more local tree species such as yellow camphor, cinnamomum camphor and acanthopanax were planted, and measures such as increasing soil thickness and clay content in soil were taken to improve the regional soil ecological environment.
© The Authors, published by EDP Sciences, 2025
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