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热带树木物种中的叶子甲和氧化物流

Md Rezaul Karim¹, Md Abdul Halim¹, Sean C Thomas¹

¹Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St. Toronto, ON M5S 3B3, Canada.

The Science of the total environment

|September 29, 2024

概括

热带树叶表现出多样化的甲 (CH4) 和氧化 (N2O) 流. 先驱物种对排放的贡献更大,影响森林温室气体预算和保护战略.

科学领域:

生态生态学生态生态学
生物地质化学生物地质化学
森林科学森林科学森林科学

背景情况:

甲 (CH4) 和氧化 (N2O) 是强大的温室气体 (GHG),其全球变暖潜力高于CO2.
热带森林中CH4和N2O的叶片交换是很少理解的,尽管它们的重要性.
叶子经济学光谱 (LES) 特性可能会影响叶子温室气体流.

研究的目的:

在热带树种中量化叶子CH4和N2O流.
调查叶子温室气体流和LES特征之间的关系.
评估不同连续物种对温室气体排放的贡献.

主要方法:

叶子中CH4和N2O流的现场测量是在孟加拉国Lawachara国家公园进行的.
使用了离轴集成腔输出光谱和光反腔增强吸收光谱.
在不同树种的不同光线条件下 (黑暗,低光和高光) 进行测量.

主要成果:

叶状CH4流量有所变化,观察到吸收和流出,导致站位水平的净排放量可以忽略不计.
氧化 (N2O) 在物种之间显示出一致的流量,先驱物种的流量明显高于后期继承物种.
在N2O流量和叶子总含量之间发现了正相关性.

结论:

开拓者树种在净CH4和N2O排放中发挥着重要作用,可能抵消碳封存的好处.
准确的温室气体预算需要直接测量叶状CH4和N2O流.
优先考虑后期继承物种的保护和管理可以更好地减轻热带森林再生中的温室气体排放.

关键词:

叶状的叶状的温室气体温室气体是一种温室气体.叶子经济学的频谱.甲甲是一种氧化氧化物是什么?作为一个开拓者.热带地区的热带树

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