开采改变了离子稀土采矿场的微生物群落及其共发生模式
Jingjing Liu1, Chun Li2, Wendan Ma2
1School of Energy and Machinery Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China; Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Ganzhou 341099, China.
The Science of the total environment
|July 16, 2023
概括
稀土元素 (REE) 的开采破坏了土壤微生物群落,有利于寡质细菌和破坏生态网络的稳定. 了解这些影响对于评估采矿工作至关重要.
科学领域:
- 环境微生物学环境微生物学
- 土壤科学 土壤科学
- 生态生态学 生态生态学
背景情况:
- 稀土元素 (REE) 的开采导致了重大的环境问题.
- 煤矿开采对土壤原生生物群落及其相互作用的影响尚不清楚.
研究的目的:
- 研究REE开采对细菌,考古和氨氧化社区的影响.
- 分析矿山影响土壤中的这些微生物群落之间的相互作用.
主要方法:
- 使用高通量测序和定量聚合酶链反应 (qPCR).
- 分析了微生物社区结构,丰富度和共发生网络.
- 评估了包括营养物质和稀土元素 (TREEs) 在内的土壤特性.
主要成果:
- 采矿土壤的结构不佳,营养缺乏和高可再生能源.
- 橄型细菌主导着采矿和未开采的土壤,而复制型细菌则在周围的土壤中丰富.
- 考古物比细菌更稳定,氨氧化考古物 (AOA) 数量超过氨氧化细菌 (AOB),受pH值,营养素和TREEs的影响.
- 采矿降低了微生物网络的复杂性和稳定性,寡量化Chloroflexi取代复制性蛋白质细菌和Actinobacteriota作为关键分类.
结论:
- 煤矿开采大大改变了土壤微生物群落的结构和功能.
- 剥削导致微生物生态系统不太稳定,并导致关键种群的变化.
- 这些发现对于REE采矿活动的生态风险评估至关重要.
相关概念视频
Microbial Nutrition
105
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
105
Extraction: Advanced Methods
493
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
493
Overview of Archaea
47
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
47
Environmental Applications of Microorganisms
63
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
63


