Article (Scientific journals)
Nitrogen addition mediates the effect of soil microbial diversity on microbial carbon use efficiency under long-term tillage practices
Zhang, Mengni; Li, Shengping; Wu, Xueping et al.
2022In Land Degradation and Development, 33 (13), p. 2258 - 2275
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Keywords :
microbial carbon use efficiency; microbial community; nitrogen; no-tillage; soil organic carbon; Carbon use efficiencies; Conventional tillage; Microbial carbon use efficiency; Microbial carbons; Microbial communities; No tillage; Soil microbial; Soil microbial diversity; Soil organic carbon; Tillage practices; Environmental Chemistry; Development; Environmental Science (all); Soil Science; General Environmental Science
Abstract :
[en] Tillage practices can influence soil microbial carbon use efficiency (CUE), which is critical for carbon cycling in terrestrial ecosystems. The effect of tillage practices could also be regulated by nitrogen (N) addition. However, the soil microbial mechanism relating to N fertilizer effect on microbial CUE under no-tillage (zero-tillage) is still unclear. We investigated how N fertilizer regulates the effect of tillage management on microbial CUE through changing microbial properties and further assessed the impact of microbial CUE on particulate (POC) and mineral-associated organic matter carbon (MAOC). For this we used a 16-year field experiment with no-tillage (NT) and conventional tillage (CT), both of which combined with 105 (N1), 180 (N2), and 210 kg N ha−1 (N3) N application. We found that microbial CUE increased with increasing N application rate. NT increased microbial CUE compared with CT in the 0–10 cm. The bacterial and fungal diversities of NT were higher than CT and N application decreased their diversities in 0–10 cm. The partial least squares path model showed that bacterial and fungal diversity had a significant influence on microbial CUE. Furthermore, POC and MAOC under NT were higher than CT and they also increased with increasing N application rate. It suggested that increasing microbial CUE induced by N application had the potential to increase POC and MAOC. Overall, this study highlights that N addition can alter the effect of soil microbial diversity on CUE, which further improves our understanding to explain and predict the fractions of SOC (i.e., POC and MAOC) in tillage systems.
Disciplines :
Agriculture & agronomy
Author, co-author :
Zhang, Mengni ;  Université de Liège - ULiège > TERRA Research Centre ; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Li, Shengping ;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Wu, Xueping ;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China ; Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-quality and Efficiency in the Loess Plateau, Taigu, China
Zheng, Fengjun;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Song, Xiaojun;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Lu, Jinjing  ;  Université de Liège - ULiège > Université de Liège - ULiège ; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Liu, Xiaotong ;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Wang, Bisheng;  College of Agronomy, Qingdao Agricultural University, Qingdao, China
Abdelrhmana, Ahmed Ali ;  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Degré, Aurore  ;  Université de Liège - ULiège > TERRA Research Centre > Echanges Eau - Sol - Plantes
Language :
English
Title :
Nitrogen addition mediates the effect of soil microbial diversity on microbial carbon use efficiency under long-term tillage practices
Publication date :
15 August 2022
Journal title :
Land Degradation and Development
ISSN :
1085-3278
eISSN :
1099-145X
Publisher :
John Wiley and Sons Ltd
Volume :
33
Issue :
13
Pages :
2258 - 2275
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
National Key Research and Development Program of China
Funding text :
Ministerial and Provincial Co‐Innovation Centre for Endemic Crops Production with High‐quality and Efficiency in the Loess Plateau, Taigu 030801, China, Grant/Award Number: SBGJXTZXKF‐02; National Key Research and Development Program of China, Grant/Award Numbers: 2018YFD0200408, 2018YFE0112300 Funding informationThis research was supported by the Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-quality and Efficiency in the Loess Plateau, Taigu 030801, China (SBGJXTZXKF-02), the National Key Research and Development Program of China (2018YFE0112300 and 2018YFD0200408). We wish to thank the editors and reviewers for their constructive comments.This research was supported by the Ministerial and Provincial Co‐Innovation Centre for Endemic Crops Production with High‐quality and Efficiency in the Loess Plateau, Taigu 030801, China (SBGJXTZXKF‐02), the National Key Research and Development Program of China (2018YFE0112300 and 2018YFD0200408). We wish to thank the editors and reviewers for their constructive comments.
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