Mineral Availability as a Key Regulator of Soil Carbon Storage

Yu, Guanghui; Xiao, Jian; Hu, Shuijin; Polizzotto, Matthew L.; Zhao, Fang‐Jie; McGrath, Steve P.; Li, Huan; Wei, Ran; Shen, Qirong

doi:10.1021/acs.est.7b00305

Cited by 182 publications

(133 citation statements)

References 63 publications

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“…Organic fertilization directly increased the CMR by improving the growth and activity of soil microorganisms (Zhao et al, 2016), resulting in a larger reductive dissolution of Fe oxides in the rice phase than chemical fertilization alone because of a greater demand for alternative electron acceptors Kögel-Knabner et al, 2010). The repeated redox alternations could drive the biogeochemical cycles of iron oxides and organic matter (Ginn et al, 2017;Riedel et al, 2013), during which organic fertilization promoted the formation of SRO minerals by forming organo-SRO complexes to prevent their growth or transformation to the crystalline forms (Schwertmann, 1966;Schwertmann et al, 2005;Yu et al, 2017). Ginn et al (2017) noted that frequent alternations in redox conditions increased the production of SRO-Fe(III) (hydr) oxides.…”

Section: Discussion Carbon Storagementioning

confidence: 99%

Carbon Sequestration Potential Promoted by Oxalate Extractable Iron Oxides through Organic Fertilization

Huang

Feng

Zhao

et al. 2017

Soil Science Soc of Amer J

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Abbreviations: CK, control with no fertilizer; CMR, C mineralization rate; CMR, Fed, diothionate extractable iron oxides; Feo, oxalate-extractable iron oxides; MBC, microbial biomass C; NPK, Chemical fertilizer; NPKM, 50% chmical fertilizer plus manure; NPKS, 100% chemical fertilizer plus straw; NPKMOI, 20% chemical fertilizer plus manure organic-inorganic compound fertilizer; SCMR, specific C mineralization rate; SOC, soil organic C; SRO, short-ranged order. S oil organic carbon constitutes the largest terrestrial C reservoir in the global C cycle (Heimann and Reichstein, 2008). The long-term storage and stability of SOC have a profound influence on soil fertility enhancement, food security improvement, and global warming mitigation (Lal, 2004). Furthermore, SOC is closely associated with a wide range of soil biogeochemistries and thus plays an important role in improving soil quality and agro-ecosystem productivity (Reeves, 1997). Therefore, C sequestration in agricultural soils by increasing organic amendment inputs has long been considered an important issue in increasing the SOC content and the mechanisms underlying the accumulation of SOC have drawn increasing attention Wen et al., 2014 • Oxalate extractable iron oxides contributed to soil organic carbon sequestration.• Soil organic carbon from 20 to 40 cm was more labile than that from 0 to 20 cm.• Oxalate extractable iron oxides preferentially preserved aromatic compounds.

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Section: Discussion Carbon Storagementioning

confidence: 99%

Carbon Sequestration Potential Promoted by Oxalate Extractable Iron Oxides through Organic Fertilization

Huang

Feng

Zhao

et al. 2017

Soil Science Soc of Amer J

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“…The pore sizes 1,000 and 20 μm would permit or do not permit the entrance of roots, respectively (Cheng et al, 2012;Yu et al, 2017). The pore sizes 1,000 and 20 μm would permit or do not permit the entrance of roots, respectively (Cheng et al, 2012;Yu et al, 2017).…”

Section: Microcosm Experimentsmentioning

confidence: 99%

“…Specifically, fertilization regimes alter microbial communities (Wen et al, 2018;Xun et al, 2016), soil pH (Guo et al, 2010), and mobilize iron (Xiao et al, 2016;Yu et al, 2017), which further affect the free radical reaction. Specifically, fertilization regimes alter microbial communities (Wen et al, 2018;Xun et al, 2016), soil pH (Guo et al, 2010), and mobilize iron (Xiao et al, 2016;Yu et al, 2017), which further affect the free radical reaction.…”

Section: Mechanisms Of Soil C Stability and Storage Through Microbimentioning

confidence: 99%

“…This catalysis reaction may be triggered by organic inputs to soils due to (a) enhanced microorganism activity (Shahzad et al, 2015) et al, 2019) or (b) increased mineral availability and alteration of mineral species (Ding, Su, Xu, Jia, & Zhu, 2015;Wen et al, 2018;Yu et al, 2017), which may act as catalysts and nanocatalysts to react with H 2 O 2 via Fenton-like reactions (Garrido-Ramírez, Theng, & Mora, 2010;Georgiou et al, 2015;Petigara et al, 2002): To test these hypotheses, we examined the effect of organic inputs on soil biodiversity and iron availability within three well-controlled long-term (25-29 year) agroecosystem experiments across the major agricultural zones from temperate northern to subtropical southern China ( Figure S1). …”

Section: Introductionmentioning

confidence: 99%

“…Second, mobilized iron can be easily transformed into the newly formed reactive Fe (hydro)oxides (especially poorly crystalline Fe oxides;Kleber, Mikutta, Torn, & Jahn, 2005;Yu et al, 2017), which promote the formation of organo-mineral associations that are chemically stable(Baldock & Skjemstad, 2000;Huang et al, 2018;Kaiser & Guggenberger, 2007;Kleber et al, 2015;Koegel-Knabner et al, 2008;Lehmann & Kleber, 2015;Mikutta, Kleber, Torn, & Jahn, 2006;Wen, Liu, Deng, He, & Yu, 2019). Second, mobilized iron can be easily transformed into the newly formed reactive Fe (hydro)oxides (especially poorly crystalline Fe oxides;Kleber, Mikutta, Torn, & Jahn, 2005;Yu et al, 2017), which promote the formation of organo-mineral associations that are chemically stable(Baldock & Skjemstad, 2000;Huang et al, 2018;Kaiser & Guggenberger, 2007;Kleber et al, 2015;Koegel-Knabner et al, 2008;Lehmann & Kleber, 2015;Mikutta, Kleber, Torn, & Jahn, 2006;Wen, Liu, Deng, He, & Yu, 2019).…”

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Influence of biodiversity and iron availability on soil peroxide: Implications for soil carbon stabilization and storage

Sun

Liu

et al. 2019

Land Degrad Dev

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Intensive agriculture results in soil degradation, especially with the depletion of soil organic carbon (SOC). Application of organic fertilizers (e.g., animal manures) alone or combined with chemical fertilizers can alleviate soil degradation by increasing soil C while causing variations in soil hydrogen peroxide (H 2 O 2 ) and iron availability.However, the underlying relationships among soil H 2 O 2 production, iron availability, and soil C storage following organic fertilization remain poorly understood. By combining results from three agroecosystem experiments from temperate northern to subtropical southern China with 25-29 years of different fertilization treatments (no fertilization, Control; inorganic nitrogen, phosphorus and potassium fertilization [NPK]; NPK plus manure [NPKM]), here, we show that NPK treatments increased soil H 2 O 2 but decreased biodiversity (i.e., Shannon index) and SOC compared with NPKM treatments across all of the three experiments. In all of the examined soils, the contents of H 2 O 2 were approximately 0.7-to 7-fold higher under NPK treatment than under Control or NPKM treatments. The contents of H 2 O 2 were significantly affected by the fertilization regimes, experimental places, and their interaction. Compared with Control and NPKM treatments, NPK treatment decreased Shannon index to the greatest extent (~1.5) at the Qiyang experiment in subtropical southern China, followed by Jinxian (~0.6) in subtropical southern China, and Gongzhuling (~0.3) in temperate northern China. There was a significant and negative correlation between soil H 2 O 2 and Shannon index or mobilized iron, indicating that high biodiversity and high mobilized iron were beneficial to the decay of soil H 2 O 2 . Results from microcosm experiments support the field observations, implying that the occurrence of microbial-mediated Fenton-like reactions or free radical reactions was influenced by organic inputs. Together, these findings suggest that long-term manure inputs to soil initialize free radical reactions by activating microbial communities and mobilizing iron, providing benefits for soil C stabilization and storage by increasing recalcitrance and SOC interactions.

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Architecture of soil microaggregates: Advanced methodologies to explore properties and functions

Amelung,

Tang,

Siebers

et al. 2023

J. Plant Nutr. Soil Sci.

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The functions of soils are intimately linked to their three‐dimensional pore space and the associated biogeochemical interfaces, mirrored in the complex structure that developed during pedogenesis. Under stress overload, soil disintegrates into smaller compound structures, conventionally named aggregates. Microaggregates (<250 µm) are recognized as the most stable soil structural units. They are built of mineral, organic, and biotic materials, provide habitats for a vast diversity of microorganisms, and are closely involved in the cycling of matter and energy. However, exploring the architecture of soil microaggregates and their linkage to soil functions remains a challenging but demanding scientific endeavor. With the advent of complementary spectromicroscopic and tomographic techniques, we can now assess and visualize the size, composition, and porosity of microaggregates and the spatial arrangement of their interior building units. Their combinations with advanced experimental pedology, multi‐isotope labeling experiments, and computational approaches pave the way to investigate microaggregate turnover and stability, explore their role in element cycling, and unravel the intricate linkage between structure and function. However, spectromicroscopic techniques operate at different scales and resolutions, and have specific requirements for sample preparation and microaggregate isolation; hence, special attention must be paid to both the separation of microaggregates in a reproducible manner and the synopsis of the geography of information that originates from the diverse complementary instrumental techniques. The latter calls for further development of strategies for synlocation and synscaling beyond the present state of correlative analysis. Here, we present examples of recent scientific progress and review both options and challenges of the joint application of cutting‐edge techniques to achieve a sophisticated picture of the properties and functions of soil microaggregates.

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Mineral Availability as a Key Regulator of Soil Carbon Storage

Cited by 182 publications

References 63 publications

Carbon Sequestration Potential Promoted by Oxalate Extractable Iron Oxides through Organic Fertilization

Carbon Sequestration Potential Promoted by Oxalate Extractable Iron Oxides through Organic Fertilization

Influence of biodiversity and iron availability on soil peroxide: Implications for soil carbon stabilization and storage

Architecture of soil microaggregates: Advanced methodologies to explore properties and functions

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