森林植被对回收硬煤深度采矿破坏堆中的Technosol属性的影响
Marcin Pietrzykowski1, Amisalu Milkias Misebo2,3, Bartłomiej Woś1
1Faculty of Forestry, Department of Ecological Engineering and Forest Hydrology, University of Agriculture in Krakow, Krakow, Poland.
Scientific reports
|February 2, 2026
概括
开采土地的植树改善了土壤特性,在再生表土 (PTS) 上进行活跃种植,提高了水容量和营养素,而不是自然继承. 不同的方法为开采后的生态系统恢复提供了不同的好处.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 生态生态学 生态生态学
背景情况:
- 采矿活动会造成破坏性区域,如垃圾堆和露天坑,对环境产生重大影响.
- 植树可以通过改善这些受破坏地区的土壤特性来恢复陆地生态系统的功能和弹性.
- 植树对土壤属性的有效性,特别是在采矿后的Techonosols中,取决于所选择的树木引入方法.
研究的目的:
- 评估三种植树方法对煤炭开采后地区土壤特性的影响.
- 调查土壤物理和化学性质的变化,在荒废土壤 (SBT) 上的继承,在回收土壤 (STS) 上的继承和在回收土壤 (PTS) 上的种植.
- 为优化开采后土地恢复的植林策略提供见解.
主要方法:
- 在煤炭开采后的地区,从30个地块 (10x10米) 收集了土壤样本.
- 分析的物理性质:土壤质地,散密度 (BD),多孔性,空气容量,毛细管水容量 (CWC) 和水分含量 (MC).
- 分析的化学特性:可交换的基离子 (Ca2+,Mg2+,K+,Na+),总有机碳 (SOCt),SOC分量 (ColF,CflF,CMAF),总 (Nt) 和总硫 (St).
主要成果:
- 在再生表土 (PTS) 上种植的CWC,Nt,Ca2+,K+,封闭的轻碳分数 (ColF) 和与矿物相关的碳分数 (CMAF) 相比,在荒的腐蚀表土 (SBT) 上种植的CWC,Nt,Ca2+,K+,CMAF显著更高.
- 在荒的腐蚀顶部 (SBT) 上的继承表现出比回收表土 (STS) 上的继承更大的孔隙性,Mg2+和碳的自由光分数 (CflF).
- 此外,SBT的总硫 (St) 含量比STS和PTS高,这表明每个方法的土壤变化机制不同.
结论:
- 积极的回收,特别是PTS,有效地提高了土壤结构稳定性,营养保留和长期碳封存在采矿后的地点.
- 自然继承 (SBT) 和积极恢复 (PTS,STS) 都通过不同的途径导致土壤性质变化.
- 选择植林策略应与恢复目标,表层土壤的可用性和资源限制保持一致,考虑到积极恢复的劳动密集性.
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