Nitrogen fertilization degrades soil aggregation by increasing ammonium ions and decreasing biological binding agents on a Vertisol after 12 years

Guo, Zichun; Li, Wei; Islam, Mahbub Ul; Wang, Yuekai; ZHANG, Zhongbin; Peng, Xinhua

doi:10.1016/s1002-0160(21)60091-7

Cited by 11 publications

(7 citation statements)

References 31 publications

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“…The water stability of soil aggregate has also been quantified using the wet sieving method according to the geometric mean diameter (GMD), mean weight diameter (MWD), and water‐stable aggregates (WSA) (Cheng et al, 2015; Molaeinasab et al, 2018). Some studies have reported that nutrients addition can influence the soil aggregate formation and stability by altering the soil organic matter (SOM) components and contents (Chang et al, 2019; Guo et al, 2022). Nitrogen had a negligible effect on the distribution of aggregates of different sizes in temperate grasslands (Y. Liu et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Nitrogen had a negligible effect on the distribution of aggregates of different sizes in temperate grasslands (Y. Liu et al, 2022). However, long‐term nitrogen (N) fertilization may lead to disintegration of soil aggregates due to soil acidification by increasing monovalent ions (NH 4 + , H + ) and the reduction of microbial biomass carbon in a soil from semiarid grassland (Buthelezi & Buthelezi‐Dube, 2022; Guo et al, 2022). The previous study also reported that N additions improved the MWD of soil aggregates because of increases in the macro‐aggregate percentage and reductions in the silt‐clay portion, whereas the enhancement degree was variable in the terrestrial ecosystems, as well as the rate, form, and duration time of the N addition from a meta‐analysis (Lu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Nutrient addition affects stability of soil organic matter and aggregate by altering chemical composition and exchangeable cations in desert steppe in northern China

et al. 2022

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Nitrogen and phosphorus can influence the stability of soil organic matter (SOM) and aggregate, which are important for ecosystem functions. However, understanding remains limited regarding the impact of nutrient addition on soil aggregate stability, aggregate‐relevant organic matter and nutrients in desert steppe. Here, we studied the variation of soil aggregate stability, nutrients, and the exchangeable cations distribution characteristics, and the chemical composition and thermal stability of SOM were analyzed using thermogravimetric (TG) and Fourier transformed infrared spectroscopy. Samples of soil were collected under four conditions, phosphorus addition (P), nitrogen addition (N), combined phosphorus and nitrogen addition (NP), and no addition (CK), from 0 to 10 cm depth over 4‐year experiments in desert steppe in northern China. The percentage of micro‐aggregates (0.25–0.053 mm) and large macroaggregates (>2 mm) dramatically increased by 34.2% and 18.1%, respectively, under the N treatment condition compared to the CK treatment, and micro‐aggregate content significantly increased under the P treatment, respectively. Nitrogen addition significantly increased the soil aggregate stability index, but the P addition reduced their value. The both macro‐aggregates (>0.25 mm) and silt‐clay (<0.053 mm) were preferentially enriched with soil nutrients and the exchangeable cations. The N and P addition was beneficial to nutrients accumulating in macro‐aggregates, and enhanced the aliphatic‐C and aromatic‐C abundances respectively. The TG‐T50 value (i.e., temperature when 50% of SOM is lost) increased after nutrient addition, indicating that the SOM has higher thermal stability, especially in the micro‐aggregates. The addition of N may have potentially a greater influence on aggregate stability through their influence exchangeable polyvalent cations (Ca2+ and Mg2+), and stability of SOM was influenced by chemical composition and exchangeable K+, Na+, Ca2+ contents in desert steppe. Overall, nutrient addition effects stability of SOM and aggregate by altering chemical composition and exchangeable cations in desert steppe in northern China.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nutrient addition affects stability of soil organic matter and aggregate by altering chemical composition and exchangeable cations in desert steppe in northern China

et al. 2022

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“…The YP anticipation in MF treatment under saturated conditions probably occurred because of an increase in particle repulsion forces caused by the higher content of monovalent ions than divalent ions in the soil sorptive complex (K/Ca + Mg). Long‐term experiments in different soil types and climatic conditions have already shown mineral fertilizer application, such as urea, reduces soil aggregation by causing soil acidification, Ca 2+ and Mg 2+ leaching and increases monovalent ions (NH 4 + and H + ) levels, especially in management systems with soil ploughing or in no‐till systems with legume planting (Blanco‐Canqui et al., 2014; Buthelezi & Buthelezi‐Dube, 2022; Guo et al., 2022; Haynes & Naidu, 1998). Our results also show acidification in the MF treatment, lower Ca 2+ and Mg 2+ levels and an increase in K + saturation (0–5 and 5–15 cm layers).…”

Section: Discussionmentioning

confidence: 99%

“…Fertilizer application can potentially lead to chemical stresses that affect soil strength by changing the soil's ionic composition, cation exchange processes and binding agents (Batistão, Holthusen, Reichert, dos Santos, & Campos, 2020; Holthusen, Jänicke, et al., 2012; Holthusen, Reeb, & Horn, 2012; Horn et al., 2019; Markgraf et al., 2012). For instance, excessive doses of mineral fertilizers may induce soil acidification and increase dispersing agents, potentially reducing aggregate stability and increasing soil vulnerability to erosive processes, compaction and nutrient loss (Blanco‐Canqui et al., 2014; Guo et al., 2022). Conversely, efficient fertilizer management on crops, i.e.…”

Section: Introductionmentioning

confidence: 99%

Long‐term application of different organic and inorganic fertilizers in no‐tillage crops changes the soil microstructural viscoelasticity and shear resistance to transient stresses

Alves,

Holthusen,

Marchezan

et al. 2024

Soil Use and Management

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The processes involved in deformation, internal strength and stability of soils with long‐term application of fertilizers (organic and inorganic sources) remain poorly investigated and hence understood, particularly in agricultural systems under subtropical climatic conditions. We investigated how long‐term fertilizer management with organic and inorganic amendments in no‐till crops affects the microstructural stability of a sandy Alfisol under oscillatory shear. The study was conducted in southern Brazil on a 17‐year completely randomized block experiment with five fertilizer treatments: pig slurry (PS), cattle slurry (CS), pig deep litter (PDL), mineral fertilizer (MF) and control, i.e. unfertilized (CL). Soil samples were collected from two layers (0–5 and 5–15 cm) for physical and chemical analyses and evaluation of soil rheological properties under oscillatory shear at two matric potentials (0 and −10 kPa). Organic matter accumulation in soil provided by the PDL and CS fertilizers resulted in higher soil stability and elasticity under oscillatory shear, especially in the 0–5 cm layer. Conversely, MF and PS enhanced the soil susceptibility towards deformation under transient stresses, mainly in the 0–5 cm layer under saturated conditions. The PDL significantly increased soil shear resistance under low‐shear strain conditions. Significant differences ceased under high‐shear strain conditions, though PS and MF yielded at significantly lower strains. Hence, under subtropical conditions, long‐term application of organic fertilizers with fibrous components promoted soil microstructure strengthening, reducing soil susceptibility to erosive processes and compaction.

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“…Studies have shown that global N inputs are projected to increase by almost 57.0% between 1995 and 2050 (Galloway et al, 2008;Jian et al, 2016). However, excessive and continuous application of N fertilizers has led to various negative consequences, including biodiversity losses (Kimmel et al, 2020;Yang et al, 2022), deterioration of soil properties (Guo et al, 2022;Wang et al, 2023) and environmental degradation (Jiang et al, 2022). China is particularly vulnerable to these issues, because it is the world's largest consumer of N fertilizer, accounting for 25.1% of the world's total N fertilizer consumption in 2020 (FAOSTAT, 2023).…”

Section: Introductionmentioning

confidence: 99%

Linking microbial carbon‐degrading potential to organic carbon sequestration in fertilized soils: Insights from metagenomics

Ma,

Niu,

et al. 2023

Land Degrad Dev

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The capacity of soils to store organic carbon (SOC) is vital for agricultural productivity. Soil microorganisms exert a critical role in carbon (C) flow and potentially influence C balance through the decomposition of plant and microbial dead biomass. However, the connection between the microbial degradation potential of plant‐derived and microbial‐derived C and soil organic carbon sequestration (SOCSR) under organic and inorganic nitrogen (N) fertilization treatments remains largely unexplored using metagenomics. In this study, metagenomics was used to investigate the effects of 4 years inorganic (N1: 250 kg N ha−1 yr−1 and N3: 450 kg N ha−1 yr−1) and organic N (O1: N1 + 11,250 kg ha−1 yr−1 sheep manure and O3: N1 + 18,750 kg ha−1 yr−1 sheep manure) fertilizer application on plant biomass decomposition genes, microbial biomass decomposition genes, and microbial properties related to different sources of C decomposition (species composition and diversity). Furthermore, the study explored the relationship between organic matter decomposition genes, microorganisms, and SOCSR. The results revealed that compared with N1 treatment, the increased application of inorganic N fertilizer (N3) significantly enhanced the abundance of genes related to plant and microbial biomass decomposition and microbial diversity involved in SOC decomposition, resulting in reduced SOC content. Conversely, the increased application of organic N fertilizer (O1 and O3) had a minor effect on the abundance of genes related to different sources of C decomposition and C decomposing microbial diversity, but reduced microbial entropy (the ratio of microbial biomass carbon to SOC) and increased SOC content. The random forest model highlighted that plant biomass decomposition genes and bacterial community composition were important factors affecting SOCSR. The Mantel test also indicated that the genes involved in the decomposition of lignin, cellulose, and hemicellulose were closely related to SOCSR. These findings highlighted that increased inorganic N fertilizers greatly enhanced the microbial capacity for SOC decomposition, resulting in reduced SOC accumulation. While the increased application of organic N fertilizer increased SOC stability and reduced the mineralization potential of SOC, contributing to SOCSR. Overall, these findings provide a greater understanding of the relationship between soil C turnover and microbial C‐degrading potential under short‐term fertilization. And in a long time, they may have important implications for global strategies aimed at increasing SOCSR to restore fertility and facilitate sustainable agricultural development.

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Nitrogen fertilization degrades soil aggregation by increasing ammonium ions and decreasing biological binding agents on a Vertisol after 12 years

Cited by 11 publications

References 31 publications

Nutrient addition affects stability of soil organic matter and aggregate by altering chemical composition and exchangeable cations in desert steppe in northern China

Nutrient addition affects stability of soil organic matter and aggregate by altering chemical composition and exchangeable cations in desert steppe in northern China

Long‐term application of different organic and inorganic fertilizers in no‐tillage crops changes the soil microstructural viscoelasticity and shear resistance to transient stresses

Linking microbial carbon‐degrading potential to organic carbon sequestration in fertilized soils: Insights from metagenomics

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