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火山喷发作为碳汇的新机制:火山灰埋藏土壤有机碳的千年封存效应
研究人员量化了厄瓜多尔全新世VEI≥4级火山喷发中火山灰(tephra)埋藏导致的土壤有机碳储量(1.1 Pg C),发现其远超同期火山直接CO2排放量(0.08-0.4 Pg C),首次证明爆炸性火山活动可通过土壤碳封存实现净负碳排放。该发现为理解地质过程对碳循环的调控提供 ...
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