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在地面上生活的植物基甲生产并不主导陆地生态系统中的甲排放
Zhi-Ping Wang1, Luke C Jeffrey2, Josep Barba3
1Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing, 100093, China. wangzp5@ibcas.ac.cn.
Planta
|November 18, 2025
概括
在地面上生活的植物产生甲 (CH4),但这些排放量在全球范围内量化得很差. 本次审查估计了这些贡献,显示它们仅占植物基甲排放总量的2%左右,突出了研究缺陷.
科学领域:
- 环境科学 环境科学
- 生物地质化学生物地质化学
- 生态生态学 生态生态学
背景情况:
- 陆地生态系统中的甲 (CH4) 过程和流动正受到越来越多的关注.
- 在地面上生活的植物基CH4生产及其数量仍然不太清楚.
- 澄清这些过程对于理解全球碳循环至关重要.
研究的目的:
- 审查和量化全球陆地生态系统的地表生物植物基甲产量.
- 识别CH4生产机制和流程中的不确定性和复杂性.
- 突出研究需求,特别是在森林生态系统.
主要方法:
- 文献综述综合了现有关于地面工厂CH4生产的数据.
- 估计地面上活着的植物产生的CH4的全球量.
- 对CH4生产的垂直模式和影响因素的分析.
主要成果:
- 全球上地生物植物基的CH4产量估计约为2.26 Tg CH4 yr-1 (范围:1.11-3.87 Tg CH4 yr-1).
- 这些排放只占地面上生活的植物基甲排放总量的约2%.
- 存在重大不确定性,特别是在森林生态系统内.
结论:
- 在地面上生活的基于植物的CH4生产受微生物和非微生物机制的影响.
- 在生态系统内,CH4的产量在垂直上有所不同,在森林中存在显著的不确定性.
- 为了了解工厂中CH4生产,运输和排放之间的关系,进一步的研究是必不可少的.
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