Neoformed aluminosilicate and phytogenic silica are competitive sinks in the silicon soil–plant cycle

Li, Zimin; Cornélis, Jean-Thomas; Linden, Charles Vander; Ranst, Éric Van; Delvaux, Bruno

doi:10.1016/j.geoderma.2020.114308

Cited by 38 publications

(29 citation statements)

References 83 publications

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“…It is necessary to further explore the effects of Moso bamboo litter on the carbon sink of bamboo forest ecosystems to help clarify the relationship between carbon flow between soil and vegetation components, which provides an essential basis for understanding the carbon sink potential of bamboo forest ecosystems ( Hu, 2019 ). Our result is also in good agreement with recent studies, indicating that SiF addition increased phytolith concentration (Si uptake) in wheat ( Liu et al, 2014 ) and rice ( Sun et al, 2019 ; Li et al, 2020a ), as well as bamboo ( Huang et al, 2020 ). Certainly, the different impact magnitude under Si fertilization may be caused by the variations in vegetation types, source of SiF, and soil Si availability ( Li and Delvaux, 2019 ; Huang et al, 2020 ).…”

Section: Discussionsupporting

confidence: 93%

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Zhou

Chen

et al. 2020

Front. Plant Sci.

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Phytolith-occluded carbon (PhytOC), a promising long-term biogeochemical carbon sequestration mode, plays a crucial role in the global carbon cycle and the regulation of atmospheric CO2. Previous studies mostly focused on the estimation of the content and storage of PhytOC, while it remains unclear about how the management practices affect the PhytOC content and whether it varies with stand age. Moso bamboo (Phyllostachys heterocycla var. pubescens) has a great potential in carbon sequestration and is rich in PhytOC. Here, we selected four management treatments, including control (CK), compound fertilization (CF), silicon (Si) fertilization (SiF) (monosilicic acid can form phytoliths through silicification), and cut to investigate the variation of phytoliths and PhytOC contents in soil, leaves, and litters, and their storage in Moso bamboo forests. In soil, the SiF fertilizer treatment significantly (P < 0.05) increased phytolith content, PhytOC content, and storage compared to CK, while there were no significant differences between the treatments of CF and cut. In leaf, compared with CK, phytolith content of the second-degree leaves under SiF and the first-degree leaves under cut treatment significantly increased, and the three treatments significantly increased PhytOC storage for leaves with three age classes. In litter, the phytolith and PhytOC contents under the three treatments were not significantly different from that under the CK treatment. The PhytOC storage increased by 19.33% under SiF treatment, but significantly decreased by 40.63% under the CF treatment. For the entire Moso bamboo forest ecosystems, PhytOC storage of all the three management treatments increased compared with CK, with the largest increase by 102% under the SiF treatment. The effects of management practices on the accumulation of PhytOC varied with age. Our study implied that Si fertilization has a greater potential to significantly promote the capacity of sequestration of carbon in Moso bamboo forests.

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Section: Discussionsupporting

confidence: 93%

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Zhou

Chen

et al. 2020

Front. Plant Sci.

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“…Total Si in the soil is as high as 28.8%, whereas bioavailable Si can be absorbed by plants (Epstein 1994;Liang et al, 2006;Ma et al, 2006;Cornelis et al, 2011;Vander Linden and Delvaux, 2019). Soil Si has many fractions, including available Si, organic matter adsorbed Si (OM Si), Fe/Mn-oxide-combined Si (Fe-Mn Si), and amorphous Si (ASi), which exhibit a dynamic balance between different Si fractions that regulate available Si in the soil (Cornelis et al, 2011;Georgiadis et al, 2013;Baráo et al, 2014;Cornelis and Delvaux, 2016;Li et al, 2020;Yang et al, 2020a). Changes in soil available Si are influenced by many management practices, such as slag fertilization, Si fertilization, and returning of straw (Ning et al, 2014;Liang et al, 2015;Samaddar et al, 2019;Li et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Soil Si has many fractions, including available Si, organic matter adsorbed Si (OM Si), Fe/Mn-oxide-combined Si (Fe-Mn Si), and amorphous Si (ASi), which exhibit a dynamic balance between different Si fractions that regulate available Si in the soil (Cornelis et al, 2011;Georgiadis et al, 2013;Baráo et al, 2014;Cornelis and Delvaux, 2016;Li et al, 2020;Yang et al, 2020a). Changes in soil available Si are influenced by many management practices, such as slag fertilization, Si fertilization, and returning of straw (Ning et al, 2014;Liang et al, 2015;Samaddar et al, 2019;Li et al, 2020). In recent years, the risk for bioavailable Si deficiency has become obvious with the promotion of high-yield varieties and increase in multiple cropping index (Liang et al, 2015;Marxen et al, 2016;.…”

Section: Introductionmentioning

confidence: 99%

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Song

Liao

et al. 2021

Soil Ecol. Lett.

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Returning crop straw into the soil is an important practice to balance biogenic and bioavailable silicon (Si) pool in paddy, which is crucial for the healthy growth of rice. However, owing to little knowledge about soil microbial communities responsible for straw degradation, how straw return affects Si bioavailability, its uptake, and rice yield remains elusive. Herein, we investigate the change of soil Si fractions and microbial community in a 39-year-old paddy field amended by a long-term straw return. Results show that rice straw return significantly increased soil bioavailable Si and rice yield from 29.9% to 61.6% and from 14.5% to 23.6%, respectively, when compared to NPK fertilization alone. Straw return significantly altered soil microbial community abundance. Acidobacteria was positively and significantly related to amorphous Si, while Rokubacteria at phylum level, Deltaproteobacteria, and Holophagae at class level was negatively and significantly related to organic matter adsorbed and Fe/Mn-oxide-combined Si in soils. Redundancy analysis of their correlations further demonstrated that Si status significantly explained 12% of soil bacterial community variation. These findings suggest that soil bacteria community and diversity interact with Si mobility by altering its transformation, thus resulting in the balance of various nutrient sources to drive biological Si cycle in agroecosystem.

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“…In fact, Kang et al (2009) and Yan et al (2017) indicated that the mechanism involving the increase of P adsorption in soils included the stable complexes formed between P and amorphous Fe and Al minerals. Available Al and Si to form pedogenic minerals such as secondary aluminosilicates, Al, and Fe oxides are documented by the significant increase in organically complexed and amorphous Al and Si at the amended soils (Huang et al 2016;Wen et al 2018;Li et al 2020). Organic reducing agents and organic acids are released from rice roots and then they increased the content of amorphous Fe and Al minerals (Das et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Organic Fertilization Improves the Availability and Adsorptive Capacity of Phosphorus in Saline-Alkaline Soils

Chen

Zhang

et al. 2020

J Soil Sci Plant Nutr

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Organic fertilizer could improve soil phosphorus (P) availability and retention capacity, and the intensive management of P nutrition in saline alkaline paddy soil is of great significance to the sustainable development of rice planting. The P fractions and adsorption-desorption characteristic in saline-alkaline soils were evaluated in a 5-year field experiment. Four treatments were designed: (1) NK (255 kg N ha −1 year −1 and 229 kg K ha −1 year −1), (2) NPK (128 kg P 2 O 5 ha −1 year −1 plus NK), (3) NPKC1 (450 kg C ha −1 year −1 plus NPK), and (4) NPKC2 (900 kg C ha −1 year −1 plus NPK). The results showed that, compared with NPK treatment, soil available P (AP) concentration was significantly increased in NPKC1 and NPKC2 treatments. Especially, soil NaHCO 3-P i concentration was increased by 112.4% and 94.6% in NPKC1 and NPKC2 treatments, respectively. And soil organic carbon (SOC) showed similar trend. However, soil pH and electrical conductivity (EC) were decreased in two organic fertilization treatments. The isothermal adsorption experiment showed that the X m values of all treatments were in the order of NPKC1 > NPKC2 > NK > NPK. Correlation analysis showed that X m was positively correlated with SOC and negatively correlated with soil pH. Under the same initial P concentration, the desorption rates in NPKC1 treatment was the lowest, which indicated that low organic fertilizer was more conducive to the soil P retention capacity. Therefore, organic fertilizer application could increase soil P availability and retention capacity, and lower organic fertilizer addition (NPKC1) was better to improve soil P availability and retention capacity in saline-alkaline soils.

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Neoformed aluminosilicate and phytogenic silica are competitive sinks in the silicon soil–plant cycle

Cited by 38 publications

References 83 publications

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Organic Fertilization Improves the Availability and Adsorptive Capacity of Phosphorus in Saline-Alkaline Soils

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