通过露天开采开采煤炭会导致覆盖层(OB)材料堆积,这对生产安全和环境稳定构成了重大风险。进行系统的文献计量分析,以确定研究趋势和差距,并评估了与煤OB植物稳定化相关领域的研究和作者的影响。与煤炭开采相关的关键问题包括土地退化,地表水和地下水污染,边坡失稳,侵蚀和生物多样性的丧失。处理煤炭OB材料加剧了此类问题,发起额外的环境和物理挑战。传统的方法,例如用于恢复OB的表土,无法恢复对可持续植被覆盖至关重要的基本土壤特性。植物稳定方法涉及在OB转储表面上建立自我维持的植物覆盖物,这是OB恢复的可行策略。通过补充有机改良剂来增强这种方法,可以通过改善有利于植物生长和污染物吸收的根际特性来促进OB垃圾场的恢复。严格评估了植物稳定化中植物选择所必需的标准。适应当地气候和生态条件的本地植物物种被确定为稳定污染物的关键因子。减少土壤侵蚀,增强生态系统功能。使用本地植物对煤矿成功进行植物稳定化的适用案例研究,为煤矿复垦工程的品种选择提供了切实可行的建议。这篇评论有助于采取可持续的方法来减轻煤炭开采对环境的影响,并促进退化景观的生态恢复。
Extraction of coal through opencast mining leads to the buildup of heaps of overburden (OB) material, which poses a significant risk to production safety and environmental stability. A systematic bibliometric analysis to identify research trends and gaps, and evaluate the impact of studies and authors in the field related to coal OB phytostabilization was conducted. Key issues associated with coal extraction include land degradation, surface and groundwater contamination, slope instability, erosion and biodiversity loss. Handling coal OB material intensifies such issues, initiating additional environmental and physical challenges. The conventional approach such as topsoiling for OB restoration fails to restore essential soil properties crucial for sustainable vegetation cover. Phytostabilization approach involves establishing a self-sustaining plant cover over OB dump surfaces emerges as a viable strategy for OB restoration. This method enhanced by the supplement of organic amendments boosts the restoration of OB dumps by improving rhizosphere properties conducive to plant growth and contaminant uptake. Criteria essential for plant selection in phytostabilization are critically evaluated. Native plant species adapted to local climatic and ecological conditions are identified as key agents in stabilizing contaminants, reducing soil erosion, and enhancing ecosystem functions. Applicable case studies of successful phytostabilization of coal mines using native plants, offering practical recommendations for species selection in coal mine reclamation projects are provided. This review contributes to sustainable approaches for mitigating the environmental consequences of coal mining and facilitates the ecological recovery of degraded landscapes.