Mine Ecological Restoration: 2nd Edition

A Special Issue of Resources (ISSN 2079-9276).

Deadline for manuscript submissions: 20 November 2026 | Viewed by 1319

Editor

Special Issue Information

Dear Colleagues,

Although the development and utilization of mineral resources have played a huge role in promoting social and economic development, it has also brought serious ecological environmental problems, such as geological environmental problems, ecological environmental problems, and environmental pollution problems. Therefore, it is necessary to explore the environmental governance and ecological restoration of the mining area.

On the basis of the Special Issue, Mine Ecological Restoration 1st Edition, we have organized “Mine Ecological Restoration: 2nd Edition”. This Special Issue aims to collect contributions from all aspects of mine ecological restoration research, including (but not limited to) laboratory and field research related to the following aspects: (i) green, safe and environmentally friendly mine ecological restoration technology; (ii) collaborative restoration technology combining multiple methods; and (iii) final recovery of useful substances from plant/microbial biomass or extracts.

Dr. Rongkui Su
Guest Editor

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Keywords

  • abandoned mines
  • environmental pollution
  • ecological damage
  • heavy metal pollution
  • site restoration
  • ecological restoration
  • phytoremediation
  • collaborative restoration
  • stabilization technology
  • resource utilization

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Published Papers (1 paper)

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Research

17 pages, 1789 KB  
Article
Effects of Coal Gangue–Fly Ash Volume Ratio and Particle Size Distribution on Substrate Water Content and Alfalfa Growth
by Xuehan Song, Jingling Li, Yamin Jia and Kaixuan Hao
Resources 2026, 15(7), 83; https://doi.org/10.3390/resources15070083 - 24 Jun 2026
Viewed by 585
Abstract
The dumping of coal gangue poses significant risks to human health and ecosystems, necessitating ecological restoration in coal gangue mining areas. This study investigates the physical properties and water-retention characteristics of coal gangue–fly ash (CG-FA) substrates under varying coal gangue volume ratios and [...] Read more.
The dumping of coal gangue poses significant risks to human health and ecosystems, necessitating ecological restoration in coal gangue mining areas. This study investigates the physical properties and water-retention characteristics of coal gangue–fly ash (CG-FA) substrates under varying coal gangue volume ratios and particle-size distributions, and evaluates their effects on alfalfa (Medicago sativa L.) growth. Six CG-FA volume ratios (5:5, 6:4, 7:3, 8:2, 9:1, 10:0) and seven particle-size distributions (1:1:1, 2:1:1, 3:1:1, 1:2:1, 1:3:1, 1:1:2, 1:1:3) were tested in 3 L pot experiments. Results showed that reducing coal gangue content significantly improved substrate structure, decreasing bulk density by 3.8–28.9% and increasing porosity by 9.8–64.4%, accompanied by enhanced water-retention capacity. The 5:5 volume ratio combined with a 1:2:1 particle-size distribution resulted in the highest alfalfa biomass, providing the best balance of substrate structure and water availability. From a resource-oriented perspective, the optimized CG–FA substrate enables the in situ utilization of coal-based solid wastes, reducing dependence on external soil resources while improving water retention and plant growth. These findings suggest potential advantages in resource utilization, economic feasibility, and environmental performance, providing a sustainable alternative for mine land restoration. Full article
(This article belongs to the Special Issue Mine Ecological Restoration: 2nd Edition)
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