在地生态系统的植被恢复过程中,溶解有机物和微生物社区组合中的分子转移
Yuntian Long1, Qian Tang1, Wanglan Tao2
1Co-Innovation Center for Sustainable Forestry in Southern China of Jiangsu Province, Key Laboratory of Soil and Water Conservation and Ecological Restoration of Jiangsu Province, Nanjing Forestry University, Nanjing, 210037, China.
Journal of environmental management
|February 20, 2026
概括
卡斯特地区的植被恢复通过增加稳定的溶解有机物 (DOM) 和改变微生物群落来增强土壤碳储存. 菌是稳定反抗性DOM化合物的关键参与者.
科学领域:
- 土壤科学 土壤科学
- 生物地质化学生物地质化学
- 生态生态学 生态生态学
背景情况:
- 溶解有机物 (DOM) 对于土壤的生物地球化学过程至关重要.
- 卡斯特地区面临生态脆弱性,植被恢复对DOM和微生物动态的影响不明.
研究的目的:
- 研究植被恢复如何影响土壤DOM分子组成和岩生态系统中的微生物群落.
- 阐明驱动土壤碳稳定的分子级微生物机制.
主要方法:
- 里叶变换离子循环子子共振质谱法 (FT-ICR MS) 用于分析DOM分子组成.
- 高通量测序以评估微生物社区动态.
- 沿着植被恢复梯度进行时序分析.
主要成果:
- 植被恢复增加了DOM芳香度和氧化状态,丰富了素类化合物并降低了生物可用性.
- 土壤碳池的稳定性得到了增强.
- 细菌组合是随机的,而真菌组合是决定性的,对环境变化更敏感.
- 与细菌相关的类似蛋白质的DOM;与真菌相关的复杂的类似素的DOM.
结论:
- 植被恢复通过DOM分子变化和微生物社区转移促进了卡斯特地区的土壤碳捕获.
- 菌群体在稳定反抗性DOM方面发挥着重要作用,有助于碳储存.
- 了解这些分子和微生物相互作用对于管理地生态系统至关重要.
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