Ten years of warming increased plant-derived carbon accumulation in an East Asian monsoon forest
Ten years of warming increased plant-derived carbon accumulation in an East Asian monsoon forest
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DOI：
10.1007/s11104-022-05642-8
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发表时间：
2022-08
期刊：
影响因子：
4.9
通讯作者：
J. Zhang;Luhui Kuang;Zhijian Mou;T. Kondo;J. Koarashi;M. Atarashi-Andoh;Yue Li;Xuli Tang;Ying‐ping Wang;J. Peñuelas;J. Sardans;D. Hui;H. Lambers;Wenjia Wu;J. Kaal;Jian Li;N. Liang;Zhanfeng Liu
中科院分区：
文献类型：
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作者：
J. Zhang;Luhui Kuang;Zhijian Mou;T. Kondo;J. Koarashi;M. Atarashi-Andoh;Yue Li;Xuli Tang;Ying‐ping Wang;J. Peñuelas;J. Sardans;D. Hui;H. Lambers;Wenjia Wu;J. Kaal;Jian Li;N. Liang;Zhanfeng Liu
目的土壤变暖通过影响碳（C）输入和分解过程以及SOC库的稳定，对陆地生态系统中的土壤有机碳（SOC）库产生显着影响。大多数研究表明，土壤变暖减少了 SOC 库，但幅度变化很大，而且对其潜在机制知之甚少。方法通过在东亚季风森林进行的 10 年土壤变暖现场实验，研究了 SOC 的浓度、稳定性（溶解、颗粒和矿物相关 SOC）和来源（植物来源与微生物来源）、土壤微生物群落组成和酶活性。结果 10 年土壤变暖显着提高了顶部的 SOC 0–10 厘米的土壤。变暖引起的SOC增加主要来自植物，木质素和酚标记平均增加60%，同时微生物来源的SOC减少27%。然而，变暖对SOC稳定性的总体影响并不具有统计显着性。结论结果表明，潮湿的季风森林土壤可以在长期变暖的情况下封存SOC。我们的研究结果与其他地区的研究结果之间的差异凸显了迫切需要更好地了解植物和微生物来源的碳的对比效应如何介导 SOC 池对整个生物群落变暖的反应。
AimsSoil warming significantly influences soil organic carbon (SOC) pools in terrestrial ecosystems through its impact on the processes of carbon (C) input and decomposition as well as the stabilization of SOC pools. Most studies demonstrated that soil warming reduces SOC pools, but the magnitude is highly variable, and the underlying mechanisms are poorly understood.MethodsThe concentration, stability (dissolved, particulate, and mineral-associated SOC) and source (plant-derivedvs.microbial-derived) of SOC, soil microbial community composition, and enzymatic activities were studied in a 10-year soil warming field experiment in an East Asian monsoon forest.Results10-year soil warming significantly enhanced SOC in the top 0–10 cm soil. The increased SOC induced by warming was mainly derived from plants, with lignin and phenol markers increasing by 60% on average, accompanied by a 27% decrease in microbial-derived SOC. However, the overall effect of warming on SOC stability was not statistically significant.ConclusionsThe results suggest that the moist monsoon forest soil could sequester SOC upon long-term warming. The discrepancy between our findings and those from other regions highlights an urgent need for a better understanding of how the contrasting effects of plant- and microbial-derived C mediate the response of the SOC pool to warming across biomes.