硫酸盐度对淡水湖的时空尺度上的环氧化反应的反应
Chuanqiao Zhou1, Xiaoguang Xu2, Yu Peng1
1Department of Transdisciplinary Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan.
The Science of the total environment
|September 10, 2024
概括
欧化加剧了湖泊中的硫酸盐 (SO42−) 含量,特别是在沉积物中. 虽然它促进了硫酸盐的积累,但微生物过程,如硫酸盐的减少,可以减少它,揭示了对湖泊硫的动态的双重影响.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 生物地质化学生物地质化学
背景情况:
- 环死湖中的硫酸盐 (SO42−) 度上升带来了生态风险.
- 欧化和硫酸盐动态之间的相互作用仍然不清楚.
- 了解这些过程对于湖泊生态系统管理至关重要.
研究的目的:
- 为了研究环氧化对湖水和沉积物中硫酸盐 (SO42−) 度的影响.
- 阐明控制不同热量条件下的硫酸盐动态的机制.
- 为了评估硫酸盐的时空变化,与缩有关.
主要方法:
- 实地监测水和沉积物中的硫酸盐 (SO42−) 在七个具有不同热量状态的湖泊中.
- 在一个多年的时间里,对酸盐 (SO42−) 在化的太湖 (Taihu) 进行了时间监测.
- 微观宇宙实验,使用不同初始硫酸盐 (SO42−) 度.
主要成果:
- 外源硫输入是硫酸盐 (SO42−) 水平升高的主要驱动因素,在水中达到100 mg/L,在沉积物中达到310.9 mg/L.
- 轻化与沉积物硫酸盐 (SO42−) (TLI:R2 = 0.99,0.88) 和水硫酸盐 (SO42−) (空间:R2 = 0.49;时间:R2 = 0.44) 有正相关.
- 微观宇宙研究显示,蓝藻细菌分解诱导的无氧条件减少了硫酸盐 (SO42−) 和增加了酸挥发硫化物 (AVS).
结论:
- 欧化对酸盐 (SO42−) 动态在上层水域具有双重影响.
- 硫酸盐 (SO42−) 的增加与缩有关,特别是在沉积物中.
- 在无氧条件下的微生物硫酸盐减少可以减轻硫酸盐 (SO42−) 的积累.
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