Mangrove deforestation threatens to release large stores of carbon from soils that are vulnerable to oxidation. Carbon stored in deep soils is not measured in national carbon inventories. Thus, policies on emission reductions have likely underestimated the contribution of mangrove deforestation to national emissions. Here, we estimate that emissions from deforestation and degradation of mangroves in Mexico are 31 times greater than the values used to determine national emission reduction targets for the Paris Agreement. Thus, Mexico has vastly undervaluated the potential of mangrove protection to reduce its emissions. Accounting for carbon emissions from mangrove soils should greatly increase the priority of mangrove forests to receive funding for protection under carbon trading programs.

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墨西哥红树林保护对碳排放目标的贡献被低估

红树林的砍伐有可能从易氧化的土壤中释放出大量的碳。储存在深层土壤中的碳没有在国家碳清单中测量。因此，关于减排的政策可能低估了红树林砍伐对国家排放的贡献。在这里，我们估计墨西哥的森林砍伐和红树林退化造成的排放量是用于确定《巴黎协定》国家减排目标的值的31倍。因此，墨西哥大大低估了保护红树林以减少其排放量的潜力。对红树林土壤的碳排放进行核算应大大提高红树林的优先级，使其能够接受碳交易计划下的保护资金。