Shifts in the dynamic mechanisms of soil organic matter transformation with nitrogen addition: From a soil carbon/nitrogen-driven mechanism to a microbe-driven mechanism

Chen, Qiuyu; Hu, Yilun; Hu, Ang; Niu, Bin; Yang, Xiaoqin; Jiao, Hongzhe; Xu-Ri, --; Song, Lili; Zhang, Gengxin

doi:10.1016/j.soilbio.2021.108355

Cited by 14 publications

(15 citation statements)

References 54 publications

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“…In most temperate forests, increased N availability may reduce the need for plants to invest C to the belowground system for nutrient acquisition, resulting in a shift in C allocation to aboveground tissue production at the expense of root production (Chen, Chen, et al, 2021; Chen, Hu, et al, 2021; Li, Wang, et al, 2020; Li, Zeng, et al, 2020; Treseder, 2008). As a result, increased N availability and the associated decrease in pH may result in decreased root biomass and root exudation, decreasing microbial diversity (Chen, Chen, et al, 2021; Chen, Hu, et al, 2021). However, we found that N fertilization increased microbial diversity in temperate forests (Figure 3).…”

Section: Discussionmentioning

confidence: 99%

“…In a simple conceptual model (Figure 8), N fertilization can stimulate plant biomass production by relieving N limitation Chen, Hu, et al, 2021;Delgado-Baquerizo, Giaramida, et al, 2016;Delgado-Baquerizo, Maestre, et al, 2016;Lundberg & Teixeira, 2018;Xu, Li, et al, 2021;Zhou et al, 2017); however, the magnitude of this stimulation can change over time, owing to the degree of colimitation by other resources [e.g., phosphorus (P), potassium (K), micronutrients, light, and water] (Cardinale et al, 2012;Li, Zeng, et al, 2020;Niu et al, 2016;Yu et al, 2019).…”

Section: Linkagebetweensoilmicrobialdiversityand Soil C Under N Ferti...mentioning

confidence: 99%

“…N fertilization enhances soil N availability (Buchkowski et al, 2017; Tripathi et al, 2018; Zhalnina et al, 2015) and increases plant productivity and the associated C input (Liang et al, 2017; Wang, Liu, & Bai, 2018). Nitrogen input can stimulate the production of plant and root biomass (Chen et al, 2019; Chen, Chen, et al, 2021; Chen, Hu, et al, 2021; Prommer et al, 2020), root exudation of C, and benefit soil organic C (SOC) accumulation (Chen et al, 2019; Xu, Xu, et al, 2021; Xu, Li, et al, 2021). In fact, the effects of N fertilization on SOC are often variable, with positive, negative, or neutral impacts due to the dynamic balance between C inputs and effluxes across study sites (Eastman et al, 2021; Feng et al, 2022; Lu, Hou, et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Nitrogen fertilization weakens the linkage between soil carbon and microbial diversity: A global meta‐analysis

Yang

Chen

Liu

et al. 2022

Global Change Biology

121

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Soil microbes make up a significant portion of the genetic diversity and play a critical role in belowground carbon (C) cycling in terrestrial ecosystems. Soil microbial diversity and organic C are often tightly coupled in C cycling processes; however, this coupling can be weakened or broken by rapid global change. A global meta-analysis was performed with 1148 paired comparisons extracted from 229 articles published between January 1998 and December 2021 to determine how nitrogen (N) fertilization affects the relationship between soil C content and microbial diversity in terrestrial ecosystems. We found that N fertilization decreased soil bacterial (−11%) and fungal diversity (−17%), but increased soil organic C (SOC) (+19%), microbial biomass C (MBC) (+17%), and dissolved organic C (DOC) (+25%) across different ecosystems. Organic N (urea) fertilization had a greater effect on SOC, MBC, DOC, and bacterial and fungal diversity than inorganic N fertilization. Most importantly, soil microbial diversity decreased with increasing SOC, MBC, and DOC, and the absolute values of the correlation coefficients decreased with increasing N fertilization rate and duration, suggesting that N fertilization weakened the linkage between soil C and microbial diversity. The weakened linkage might negatively impact essential ecosystem services under high rates of N fertilization; this understanding is important for mitigating the negative impact of global N enrichment on soil C cycling.

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Section: Discussionmentioning

confidence: 99%

Section: Linkagebetweensoilmicrobialdiversityand Soil C Under N Ferti...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Nitrogen fertilization weakens the linkage between soil carbon and microbial diversity: A global meta‐analysis

Yang

Chen

Liu

et al. 2022

Global Change Biology

121

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“…The interrelationship of plants, soil, and microorganisms maintains the function of the soil ecosystem ( Nihorimbere et al, 2011 ; Lozano et al, 2014 ; Purahong et al, 2018 ; Sun et al, 2018 ). Soil microorganisms play an important role in the agricultural response to changing ecological environment due to their various nutrient cycles and soil carbon sequestration ( Basu et al, 2020 ; Chen et al, 2021b ). The study of the composition of soil microbial communities not only contributes to a more in-depth understanding of the ecological process, but it also has important implications for the conservation of wild resources ( Samuel, 2014 ; Rigg et al, 2016 ; Shao et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Zhang

Phillip

et al. 2022

Front. Plant Sci.

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Malus sieversii grows on the slopes of the Tianshan Mountains in Xinjiang where the difference in daily temperature is significant. In recent years, the rhizosphere soil health of Malus sieversii has been severely impacted by anthropogenic disturbance and pathogenic infestation. The soil nutrient content and soil microorganism diversity are the main components of soil health. Low temperature has negative effects on soil bacterial community structure by inhibiting the accumulation of carbon and nitrogen. However, the effects of temperature and nitrogen application on soil carbon and nitrogen accumulation and the bacterial community composition in the rhizosphere soil of Malus sieversii are unclear. We set two temperature levels, i.e., low temperature (L) and room temperature (R), combined with no nitrogen (N0) and nitrogen application (N1) to explore the response of plant carbon and nitrogen uptake, rhizosphere soil carbon and nitrogen accumulation and bacterial community composition to temperature and nitrogen fertilization. At the same temperature level, plant 13C abundance (P-Atom13C), plant 15N absolute abundance (P-Con15N), soil 15N abundance (S-Atom15N) and soil urease, protease and glutaminase activities were significantly higher under nitrogen application compared with the no-nitrogen application treatment. The bacterial community diversity and richness indices of the apple rhizosphere soil in the N1 treatment were higher than those in the N0 treatment. The relative abundances of Actinobacteria, Rhodopseudomonas, and Bradyrhizobium were higher in the LN1 treatment than in the LN0 treatment. Redundancy analysis (RDA) showed that plant 13C absolute abundance (P-Con13C) and plant 15N absolute abundance (P-Con15N) were the main factors affecting the soil bacterial community composition. In summary, Nitrogen application can alleviate the effects of low temperature stress on the soil bacterial community and is of benefit for the uptakes of carbon and nitrogen in Malus sieversii plants.

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Responses of Nutrients and Bacterial Communities to Temperature and Nitrogen Addition in Rhizosphere Soil for Malus sieversii Seedlings

Zhang,

Xi,

Mahmoud Ali

et al. 2024

J Soil Sci Plant Nutr

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Shifts in the dynamic mechanisms of soil organic matter transformation with nitrogen addition: From a soil carbon/nitrogen-driven mechanism to a microbe-driven mechanism

Cited by 14 publications

References 54 publications

Nitrogen fertilization weakens the linkage between soil carbon and microbial diversity: A global meta‐analysis

Nitrogen fertilization weakens the linkage between soil carbon and microbial diversity: A global meta‐analysis

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Responses of Nutrients and Bacterial Communities to Temperature and Nitrogen Addition in Rhizosphere Soil for Malus sieversii Seedlings

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