Particle size primarily shifts chemical composition of organic matter under long‐term fertilization in paddy soil

Yan, Mingrui; Zhang, Xiuzhi; Liu, Kailou; Lou, Yunwei; Wang, Yidong

doi:10.1111/ejss.13170

Cited by 14 publications

(9 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The retenate on sieve was collected and dried to a constant weight at 60 °C, which presented the fPOM (53-250 μm). The soils through the 53-μm mesh screen were also dried at 60 °C, which presented the MAOM (< 53 μm) (Yan et al 2022).…”

Section: Soil Sampling and Physical Fractionationmentioning

confidence: 99%

“…A total of 368 biochemical components were identified and were classified into 10 groups according to chemical and analytical similarities (Pascaud et al 2017;Becker et al 2019;Chen et al 2019;Yan et al 2022): lipids, monocyclic-, polycyclic-aromatics, phenolics, polysaccharides, lignins, amino N-bearing compounds, heterocyclic N-bearing compounds, other N-bearing compounds and unidentified compounds. During the pyrolysis by Py-GC/ MS, amino acids were transformed by mistake easily into the imidazoles, indoles, pyridines, pyrroles, pyrazines, and mitriles, most commonly (Schulten and Schnitzer 1997;Becker et al 2019;Yan et al 2022). Therefore, the above six compounds were unified into amino N-containing compounds.…”

Section: Determination Of Som Biochemical Compositionmentioning

confidence: 99%

“…The aromatics, short-chain lipids (< 16C), amino N-bearing compounds (nitriles, pyridines, pyrroles), and other N-bearing compounds were classified as microbial-derived. The multiple origins compounds were unspecified and some were lipids (16C-18C) (Stewart et al 2011;Barré et al 2018;Becker et al 2019;Chen et al 2019;Yan et al 2022). The atomic H/C, O/C, and N/C ratios and oxidation state were estimated according to the Eqs.…”

Section: Sources Stability and Oxidation State Of Sommentioning

confidence: 99%

“…Soil organic matter (SOM) remains fundamental in fertility, plant productivity, biodiversity, eco-environmental sustainability and global climate change (Schmidt et al 2011;Paul 2016), due to its inherent chemical properties (Lehmann and Kleber 2015). The SOM consists of main biochemical components: aromatics, lignin, lipids, N-containing compounds, phenols, and polysaccharides (Kallenbach et al 2016;Yan et al 2022). These biochemical compositions of SOM are mainly regulated by the initial quality of OM input (Kögel-Knabner 2002), microbial decomposition (Simpson et al 2007;Sokol and Bradford 2019), and organo-organic (Possinger et al 2020) and organo-mineral associations including aggregation (Totsche et al 2018;Creamer et al 2019;Kopittke et al 2020;Kleber et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Among the SOM compounds, the amount of N-containing biopolymers (amino compounds, heterocyclic compounds and others) increases after N fertilization (Hasegawa et al 2021). In paddy field, however, mineral N and organic amendments all had little influence on biochemical compositions of SOM including the proportion of N-bearing biopolymers (Yan et al 2022). The aromatics and lignin, residual compounds during decomposition, are more recalcitrant in soils compared with others (Kleber 2010;Steffens et al 2011) and can be affected by fertilization-induced plant debris and manure input.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

Yang

Liu

et al. 2023

Carbon Res.

Self Cite

View full text Add to dashboard Cite

Biochemical properties of soil organic matter (SOM) are fundamental for soil fertility and health. However, it is unclear how fertilization regime influences the biochemical compositions and oxidation states of SOM and physical fractions. In this study, this issue was studied under four 32-year amendment regimes: unfertilized control, urea (N), N + calcium dihydrogen phosphate + potassium chloride (NPK), and NPK plus manure (NPKM). Three physical fractions: coarse particulate (> 250 μm, cPOM), fine particulate (53–250 μm, fPOM) and mineral-associated OM (< 53 μm, MAOM) were separated and measured by pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). Compared with the background in 1986, the SOM increased by 10.6%, 14.2%, 23% and 52% in unfertilized control, N, NPK, and NPKM, respectively. The red soil here had not reached carbon saturation, because of the low conversion efficiency (6.8%) from input-carbon to soil organic carbon (SOC). Physical size but not amendment type primarily regulated the SOM molecular composition, with relative selective retention of aromatics and lignin in both the cPOM and fPOM, whereas N-containing compounds (particularly amino-N) were enriched in MAOM due to their high abilities to adsorb soil minerals. The C oxidation state was also mainly dependent on physical size, with the highest value in fPOM. The sources of SOM and its fractions, dominated by microbial-derived compounds (60–90%), were independent of physical size and fertilization. In conclusion, physical size arrangement (proxy of microbial decomposition degree) played a more important role in regulating the SOM biochemical features than initial quality of various amendments. Graphical Abstract

show abstract

Section: Soil Sampling and Physical Fractionationmentioning

confidence: 99%

Section: Determination Of Som Biochemical Compositionmentioning

confidence: 99%

Section: Sources Stability and Oxidation State Of Sommentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

Yang

Liu

et al. 2023

Carbon Res.

Self Cite

View full text Add to dashboard Cite

show abstract

Saline soil organic matter characteristics of aggregate size fractions after amelioration through straw and nitrogen addition

et al. 2023

View full text Add to dashboard Cite

Saline soil organic matter (SOM) composition and distribution are largely unknown. A coastal field experiment was designed to investigate the effects of straw and nitrogen addition on SOM characteristics by diffuse reflectance Fourier‐transform mid‐infrared (FTIR) spectral and amino sugar analysis. In each growing season, maize/wheat straw was applied at rates of 5.0 × 103 kg ha−1 (S5) and 1.0 × 104 kg ha−1 (S10), and inorganic nitrogen was applied at rates of 75 kg ha−1 (N75), 150 kg ha−1 (N150), and 300 kg ha−1 (N300). N150 without straw addition was the control treatment (CK). Dry‐sieving technique was used to fractionate soils into macroaggregates (>0.25 mm, MA), microaggregates (0.053–0.25 mm, MI), and silt‐plus‐clay particles (<0.053 mm, SC). Results showed that SOM and amino sugar contents were efficiently increased in the S5 and S10 treatments compared with CK, which were significantly higher in MA and MI than in SC (p < 0.05). In straw‐addition treatments, SOM and amino sugar contents were significantly higher in S5N300 and S10N300 (p < 0.05). The contribution of microbial necromass C to soil organic C (SOC) was 8.9–17.1%, and the fungal residue was dominant in bulk and aggregate soils. The amount of recalcitrant form of organic C decreased with SOM content increase, and the abundance of aromatic C groups increased under higher salt stress. Therefore, we suggested that microbial necromass accumulation could not be the main pathway of SOC sequestration, and enriching recalcitrant organic C probably led to SOM stability in saline soils.

show abstract

Reclamation of coastal marshes to croplands shifts molecular composition of soil organic matter in the Bohai Rim

Xu,

Zhu,

Yang

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

Reclamation of coastal marshes to croplands lost massive reserves of soil organic matter (SOM). However, it is uncertain how reclamation shifts chemical composition of SOM and its size fractions. Here, we investigated this issue at two coastal marshes (Qilihai, degradation with seasonal waterlog; Beidagang, annual long‐term waterlog) along with adjacent long‐term reclaimed croplands on the coast of the Bohai Bay, China. Three SOM fractions: coarse particulate (cPOM, >250 μm), fine particulate (fPOM, 53–250 μm), and mineral‐associated organic matter (<53 μm) were analyzed by pyrolysis‐gas chromatography–mass spectrometry. Compared with the Qilihai marsh, the Beidagang marsh had higher SOM contents and lower proportions of microbial‐derived N‐containing compounds, which was attributed to the waterlogging‐induced weaker decomposition. Reclamation decreased the SOM contents (−53.6% to −63.3%) and proportions of lignin in cPOM (−44% to −52%) at both sites. However, reclamation‐induced shifts of molecular composition of SOM between the two sites diverged. At the Qilihai site, reclamation decreased the relative abundances of N‐containing compounds (−28%) but increased the proportions of lipids (+17%) and phenolics (+40.7%) in mineral‐associated organic matter. At the Beidagang site, reclamation decreased the proportions of monocyclic aromatics (−60.3% to −70.2%), but increased the relative abundances of N‐containing compounds (+175% to +407%) in all fractions. By contrast, the molecular composition of SOM at the two croplands had covergent pattern. In conclusion, despite of marsh locations with different waterlogging conditions, long‐term reclamation of wetlands to croplands generated convergent patterns in storage and molecular composition of SOM, which was attributed to the similar cropland cultivation.

show abstract

Particle size primarily shifts chemical composition of organic matter under long‐term fertilization in paddy soil

Cited by 14 publications

References 53 publications

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

Saline soil organic matter characteristics of aggregate size fractions after amelioration through straw and nitrogen addition

Reclamation of coastal marshes to croplands shifts molecular composition of soil organic matter in the Bohai Rim

Contact Info

Product

Resources

About