在阿曼湾悬浮颗粒物:通过物理和生物地球化学过程控制的度,散装成分和颗粒金属的空间变化
Hamid Ershadifar1, Abolfazl Saleh1, Emad Koochaknejad1
1Iranian National Institute for Oceanography and Atmospheric Science, No. 3, Etemadzadeh St., Fatemi Ave., Tehran 1411813389, Iran.
The Science of the total environment
|August 11, 2024
概括
这项研究揭示了沙漠尘埃,波斯湾外流和沉积物再悬浮如何影响阿曼湾悬浮颗粒物 (SPM). 植物浮游生物的繁荣和微量金属也在这个复杂的海洋环境中发挥着关键作用.
科学领域:
- 海洋生物地质化学海洋生物地质化学
- 海洋学 海洋学 海洋学
- 环境科学环境科学
背景情况:
- 奥曼湾是一个鲜为人知的盆地,有复杂的海洋学过程.
- 了解悬浮颗粒物 (SPM) 的来源和组成对于海洋生态系统的健康至关重要.
研究的目的:
- 评估在阿曼湾的SPM,其组成部分,颗粒金属和营养物质静态度变化的生态化学和物理来源.
- 确定石化,碳酸盐和有机物对SPM的贡献的来源.
- 研究生物重要的微量金属的分布及其与营养素比例的关系.
主要方法:
- 在2022年2月从阿曼湾收集了颗粒物样本.
- 分析包括SPM度,元素组成,碳酸盐含量 (CaCO3),有机物质,生物和微量金属.
- 将金属/比率与公海和实验室数据进行比较.
主要成果:
- SPM度有显著的变化 (1401145μg/l),受到岩尘埃,波斯湾外流和沉积物再悬浮的影响.
- 有机物和生物是主要成分,与藻花朵有关.
- 微金属丰富系数显示Cd > Mo > Pb > Zn > Ni,Cd/P比率表明阿曼湾的需求是一致的.
结论:
- SPM的空间分布是由岩输入,区域水质运输和动态海洋学过程的组合驱动的.
- 植物浮游生物群落结构显著影响营养固态度 (N:P比).
- 与公海环境和实验室培养相比,阿曼湾表现出独特的微量金属特性.
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