地震充当了陆地有机碳的电容
Jie Liu1,2, Xuanmei Fan3, Tristram Hales2
1State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China.
Nature communications
|January 23, 2026
概括
地震和山体滑坡会增加山区的碳储量,因为它们会在沉积物中捕获土壤碳. 这些山体滑坡的碳储量是稳定的,这可能导致地震活跃的山区的净碳捕获.
科学领域:
- 地质科学 地质科学
- 生态生态学 生态生态学
- 碳循环研究 碳循环研究
背景情况:
- 地震引起的山体滑坡侵蚀了山坡的土壤碳,加速了从山区的出口.
- 这些事件对全球碳循环的净贡献在数量上仍然不确定.
研究的目的:
- 为了量化2008年温川地震后的碳质量平衡,考虑储存,损失和运输.
- 评估龙门山山脉滑坡动员碳的长期命运.
主要方法:
- 利用了2008年Mw 7.9温川地震的数据,这是最近历史上最大的山体滑坡事件.
- 在沉积物级联中量化碳的储存,损失和运输.
- 评估了事件后的再生植被和沉积物储存动态.
主要成果:
- 汶川地震显著增加了龙门山的碳质量约10%.
- 事件后的再生植被和大量的山间沉积物储存稳定了动员的碳.
- 预计山体滑坡产生的碳可以持续几个世纪到几千年.
结论:
- 地震和山体滑坡作为碳电容器,调节碳储存和释放在山区的环境.
- 在地震活跃地区频繁的山体滑坡可能会导致碳净捕获.
- 构造活动和碳循环之间存在直接联系,影响了长期的碳动态.
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