Differential impacts of lime and nitrogen amendment on nitrification, ammonia oxidizers, nitrite oxidizers, and bacterial communities in two acidic soils
文献类型： 外文期刊
作者： Wang, Qing 1 ; Xin, Yu 1 ; Yang, Kun 4 ; Wang, Suiliang 5 ; Yu, Zhiyong 5 ; Qu, Junfeng 5 ; Ruan, Yunze 1 ; Zhang, Zhijun 3 ;
作者机构： 1.Hainan Univ, Sanya Inst Breeding & Multiplicat, Sch Breeding & Multiplicat, Sanya 572025, Peoples R China
2.Hainan Univ, Sch Trop Agr & Forestry, Haikou 570228, Peoples R China
3.Hainan Acad Agr Sci, Inst Agr Environm & Soil, Key Lab Cultivated Land Conservat Hainan Prov, Haikou 571100, Peoples R China
4.Beijing Zhonghuanruide Environm Engn Ltd, Beijing, Peoples R China
5.China BlueChem Ltd, Beijing 100029, Peoples R China
关键词： Nitrification; Soil pH; Lime; Ammonium sulfate; Nitrifiers; Bacterial community
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： 2025 年 206 卷
页码：
收录情况： SCI
摘要： Nitrification plays a vital role in shaping nitrogen (N) availability and soil acidification. However, effects of lime and N fertilizer amendment on nitrification and microbial communities in acidic soils remain poorly understood. Here, we carried out a short-term microcosm experiment on two acidic soils with distinct land-use types (tea plantation versus vegetable cultivation) to study the impacts of lime and/or ammonium sulfate (NH4+) on net nitrification rates (NNR), the abundances of ammonia-oxidizing archaea (AOA) and bacteria (AOB), complete ammonia-oxidizing bacteria (Comammox), and nitrite-oxidizing bacteria (NOB), and bacterial communities. We observed that lime-only did not immediately impact NNR in both soils in the beginning of incubation period, but it increased significantly towards the end of the experiment, and combining lime with NH4+ enhanced this effect. Particularly, the NH4+-only increased NNR in vegetable soil, but decreased it in tea plantation soil. In vegetable soil, the abundance of AOB, Comammox, Nitrobacter-like NOB, and Nitrospira-like NOB increased to a greater extent under lime + NH4+ treatment relative to the NH4+ treatment after a 45-day incubation. However, this pattern was only observed for Comammox and Nitrobacter-like NOB in tea plantation soil. AOB, Comammox, and Nitrobacter-like NOB were correlated with NNR in tea plantation soil, while all nitrifiers jointly shaped it in vegetable soil. In addition, lime and/or NH4+ substantially decreased bacterial alpha-diversity in tea plantation soil, while only lime with or without NH4+ increased it in vegetable soil. Both lime and/or NH4+ altered bacterial community structure at the phylum level. Overall, above findings highlight the ecological importance of lime- and ammonium-induced impacts on soil N cycling and microbial communities across different types of acidic soils.
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