Litter quality regulates cover crop litter decay alongside altered microbial facets

文献类型： 外文期刊

第一作者： Li, Guilong

作者： Li, Guilong;Leng, Ke;Qin, Wenjing;Chen, Xiaofen;Liu, Jia;Li, Guilong;Leng, Ke;Qin, Wenjing;Chen, Xiaofen;Liu, Jia;Lin, Yongxin;Liu, Ming;Wu, Meng;Fan, Jianbo;Wang, Xiaoyue;Jiang, Yuji

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关键词： Litter type; Decay process; Litter-inhabiting microbes; Functional guilds; Network complexity

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.0； 五年影响因子：5.4 ）

ISSN： 0929-1393

年卷期： 2024 年 204 卷

页码：

收录情况： SCI

摘要： Cover crops litter decay is a vital component of nutrient cycling in agroecosystems; however, how litter quality affect decay process via microbial facets at different decay stage remains unclear. Here, we performed a 112d decay experiment using the litter of two winter cover crop species (a legume and a grass) to clarify the relationship between the temporal dynamics of litter-inhabiting microbes and litter decay in agroecosystems. Legume litter decayed faster (k = 0.064 +/- 0.002 days(-1)) than grass litter (k = 0.053 +/- 0.003 days(-1)) during the early stage (0-28 D) of decay. Wood saprotrophs and bacteria, capable of performing lignin degradation, were generally more abundant in legume litter (0.003 % and 47.77 %, respectively) than in grass litter (0.002 % and 39.24 %, respectively) during the early stage of decay. Litter quality affected the decay process through its effects on microbial functional profiles and interactions; legume litter decay increased as the abundance of specific functional guilds increased and network complexity decreased. Overall, our findings indicated that litter quality affected litter decay process and relevant litter-inhabiting microbial facets is restricted to the early stage of decay.

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