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潮脉冲对潮间湿地沉积物中由脱剂主导的氧化排放的驱动力

Jiang-Chen Gong¹, Bing-Han Li¹, Jing-Wen Hu²

¹Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.

|October 28, 2023

概括

潮间湿地是大气中氧化 (NOx) 的重要来源. 以前被忽视的潮脉冲大大增加了NOx排放量,这意味着目前的测量可能低估了总的气体释放量.

科学领域:

环境科学环境科学
生物地质化学生物地质化学
大气化学大气化学

背景情况:

潮间湿地沉积物被认为是大气氧化 (NOx) 的重要来源.
这些生态系统对全球NOx预算的确切贡献仍然不完全理解.
之前的研究还没有充分考虑潮动态对氧化物排放的影响.

研究的目的:

在潮间湿地调查NOx的区域源-沉没模式.
确定影响NOx排放的因素,特别是氧化 (NO).
为了量化潮脉冲对NOx流量的影响.

主要方法:

在州湾潮间湿地进行全年和昼间观测.
利用动态土壤反应器研究潮脉冲机制.
模拟的NOx交换流,包括潮脉冲效应.

主要成果:

与非植被地区相比,植被湿地中的年度NOx流量更高.
温度和沉积物的有机碳含量影响了每年的NOx变化.
无氧脱剂是主要的NO生产者,由于酸盐和酸盐的可用性受到限制.
潮脉冲显著增加了短期的NOx排放.

结论:

潮脉冲是潮间湿地NOx排放的主要,以前被低估的驱动因素.
当考虑潮脉冲的贡献时,每年的NOx交换流量显著更高.
目前用于测量NOx流量的方法可能会低估实际排放量,因为忽略了潮脉冲效应.

关键词:

脱化过程中的脱.流量流量流量氧化氧化是什么?氧化氧化物氧化氧化潮的潮是因为潮.

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