溶解有机物-铁- (DOM-Fe-P) 复合体在巨型植物对藻类主导的湖泊中的不同稳定性:微生物调节和有机物源控制
Jinglong Wang1, Panpan Zhou2, Weicheng Zhou3
1Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Environmental research
|December 18, 2025
概括
有机物来源控制了环死湖中的释放. 藻类和巨生物衍生的有机物以不同的方式稳定铁复合体,影响湖泊环氧化动态.
科学领域:
- 环境化学环境化学
- 临界技术 临界技术
- 微生物生态学 微生物生态学
背景情况:
- 内生 (P) 的释放驱动了缩,受溶解有机物-铁- (DOM-Fe-P) 复合物的稳定性影响.
- 传统的酸盐-二碳酸盐-二酸盐 (CBD) 提取方法无法区分DOM在稳定DOM-Fe-P复合物的作用.
- 了解DOM的作用对于管理湖泊释放至关重要.
研究的目的:
- 研究DOM-Fe-P复合物的DOM驱动稳定机制.
- 使用二碳酸盐-二酸盐 (BD) 提取方法来区分活性和稳定的铁池.
- 分析藻类主导的湖泊 (ADL) 和巨型植物主导的湖泊 (MDL) 中的微生物群落.
主要方法:
- 二碳酸盐-二甲酸盐 (BD) 提取以分离铁池.
- 在ADL和MDL中对DOM-Fe-P复合物的分析.
- 微生物社区分析.
主要成果:
- 与MDL相比,ADL在DOM-Fe-P中显示了较高的P/Fe和较低的有机碳/Fe (OC/Fe) 比率.
- 藻类DOM (ADL) 具有类似体的体成分,增加了氧化还原敏感性.
- 巨型DOM (MDL) 通过硫化物-铁竞争和多效应表现出增强的稳定性.
结论:
- 有机物来源极大地控制了DOM-Fe-P的稳定性和内源性P的释放.
- 微生物群落根据DOM源不同,影响铁和硫循环.
- 这些发现为管理环死性湖泊提供了机制基础.
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