Deciphering Biotic and Abiotic Mechanisms Underlying Straw Decomposition and Soil Organic Carbon Priming in Agriculture Soils Receiving Long-Term Fertilizers

文献类型： 外文期刊

第一作者： Fu, Yingyi

作者： Fu, Yingyi;Sun, Han;Luo, Yu;Shi, Qianer;Xu, Jianming;Zhang, Wenjun;Cai, Zejiang;Zhang, Huimin;Li, Yongchun;Li, Yongfu;Luan, Lu;Ning, Qi;Liang, Yuting;Xie, Zubin;Chen, Lijun;Liang, Chao;Tang, Caixian;Kuzyakov, Yakov

作者机构：

关键词： long-term fertilization; priming effect; fungalcommunity; isolate inoculation; cellobiohydrolase (cbhI); lignobiohydrolase (lcc); Mortierella

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 71 卷 51 期

页码：

收录情况： SCI

摘要： Straw-related carbon (C) dynamics are central for C accrual in agro-ecosystems and should be assessed by investigating their decomposition and soil organic carbon (SOC) priming effects. Our understanding of biotic and abiotic mechanisms underpinning these two C processes, however, is still not sufficiently profound. Soils that had received organic and mineral fertilizers for 26 years were sampled for a 28 day incubation experiment to assess C-13-labeled straw decomposition and SOC priming effects. On the basis of analyzing physicochemical properties, fungal taxonomic (MiSeq sequencing) and functional (metagenomics) guilds, we quantified the contributions of biotic and abiotic attributes to straw decomposition and SOC priming. Here, we propose two distinct mechanisms underlying straw decomposition and SOC priming in agriculture soils: (i) accelerated straw mineralization in manure-treated soils was mainly driven by biotic forces, while (ii) larger SOC priming in NPK-amended soils was through abiotic regulation.

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