一个综合建模框架,通过增强岩石气候变化来确定陆地二氧化碳的去除
Ziyan Zhang1, Gregory Jones2, Salvatore Calabrese3
1Department of Civil and Environmental Engineering, Imperial College London, London, UK.
Global change biology
|December 17, 2025
概括
增强岩石风化 (ERW) 是一种二氧化碳去除 (CDR) 策略. 一个新的模型,T&C-SMEW,通过整合生态水文和土壤过程来改善CDR估计,这对于净零目标至关重要.
科学领域:
- 地球和环境科学 地球和环境科学
- 气候科学 气候科学
- 生物地质化学生物地质化学
背景情况:
- 增强岩石气候处理 (ERW) 是一个有前途的二氧化碳去除 (CDR) 战略,以实现净零排放目标.
- 目前的ERW模型面临的局限性是由于对植物-土壤相互作用和水文动态的过度简化假设,导致CDR估计的显著差异.
- 这些简化掩盖了关键的短期气候反应和由土壤水分影响的生物反.
研究的目的:
- 引入T&C-SMEW,一个集成的,基于过程的建模框架,旨在表示生态水文和ERW动态.
- 将微生物显著的生物地质化学过程纳入ERW建模框架.
- 根据实验和观察数据验证T&C-SMEW框架,以改进CDR估计.
主要方法:
- 开发T&C-SMEW综合建模框架.
- 模拟生态水文和ERW动态,包括生物地球化学过程.
- 框架模拟与受控中宇宙实验和长期现场观测的比较.
主要成果:
- 该T&C-SMEW框架准确地重现了关键变量,如原料阴离子释放,土壤pH动态,总初级生产和CO2流.
- 该模型揭示了在ERW中介的CDR上显著的水文约束和植被影响.
- 对生态系统呼吸,生态系统净交换和性出口的量化影响凸显了生态水文因素的重要性.
结论:
- 该T&C-SMEW框架提供了一个更强大的方法来估计来自ERW的生态系统级CDR.
- 在ERW策略中,生态水文建模对于准确的CDR评估至关重要.
- 该框架可以帮助确定最佳的部署场景,以使ERW成为可行的CDR解决方案.
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