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在南阿巴拉契亚山脉的混合树叶森林树冠中,动态的氨交换

Rick D Saylor¹, John T Walker², Zhiyong Wu²

¹National Oceanic and Atmospheric Administration, Air Resources Laboratory, Oak Ridge, TN 37830, United States.

Ecological modelling

|June 23, 2025

概括

这项研究表明,一个模型在干旱条件下精确模拟森林中的氨 (NH3). 然而,当露水存在时,它会扎,这表明露水对森林生态系统中的NH3交换有重大影响.

科学领域:

大气化学大气化学
森林生态森林生态
生物地质化学循环的过程

背景情况:

氨 (NH3) 在森林生态系统中起着至关重要的作用,影响空气质量和营养循环.
了解大气和森林之间的NH3交换对于生态和区域空气质量评估至关重要.
现有的模型往往简化了NH3双向交换,可能缺少关键的天花板过程.

研究的目的:

分析混合树叶森林中的氨 (NH3) 度和流量测量.
评估一个多层,一维的柱子模型能够表示在吊顶内的NH3配置文件和交换过程的能力.
为了研究树冠条件,特别是露水对NH3动态的影响.

主要方法:

采用了多层,一维的柱子模型,并采用了详细的树冠物理.
模拟的NH3度和流量,用于干燥的树冠时期 (4月) 和露水时期 (7月).
模型输出的比较与顶内NH3配置文件和顶上方流量的现场测量.

主要成果:

该模型在干燥的天花板条件下准确地复制了天花板内的NH3配置文件.
模型性能在快速干燥期间下降,低估了NH3度,可能是由于未计数的露水释放.
模拟的NH3在树冠上方的流量通常很小,沉积和排放的季节性变化.

结论:

露水显著影响天花板内氨 (NH3) 度,这是目前模型未能捕捉到的过程.
多层模型是必要的,以准确地表示NH3双向交换和森林生态系统的树冠变化.
需要进一步的研究来了解NH3与露水的交换及其对区域空气质量建模的影响.

关键词:

氨气氨气氨气是一种存款方式存款方式存款方式在这里,我们可以看到Dew Dew Dew Dew.森林的树冠是森林的树冠.在天花板内.

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