Conversion of soil particle size distribution and texture classification from ISSS system to FAO/USDA system in Japanese paddy soils

Takahashi, Tomoki; Nakano, Keiko; Nira, Rikiya; Kumagai, Etsushi; Nishida, Mizuhiko; Namikawa, Mari

doi:10.1080/00380768.2020.1763143

Cited by 15 publications

(6 citation statements)

References 10 publications

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“…The total N content was 1.8 ± 0.1 mg kg − 1 . These values were similar to the average values for paddy soils in Japan (Honda et al, 2007;Yamada et al, 2009;Takahashi et al, 2020). Exchangeable Na content was 0.15 ± 0.02 (cmol c kg − 1 ), the exchangeable K content was 0.29 ± 0.03 (cmol c kg − 1 ), the exchangeable Ca content was 2.5 ± 0.3 (cmol c kg − 1 ) and the exchangeable Mg content was 3.3 ± 0.50 (cmol c kg − 1 ).…”

Section: Soil Propertiessupporting

confidence: 85%

Temporal patterns of nickel transfer from soil to rice in terraced paddy fields affected by serpentinite

Harada

Nakao

Matsuo

et al. 2023

Preprint

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Nickel (Ni) is an essential micronutrient for plants although it is considered toxic when present in excess in the soil. This study investigated the transfer of Ni from the soil to rice in terraced paddy fields affected by serpentinite, which contains an anomalously higher Ni content compared with other geological materials. Soils, soil solutions, and rice plants were collected at several different growing stages from three adjacent terraced paddy fields subject to the same water and fertilizer management. Temporal changes in their elemental compositions revealed that a higher concentration of Ni was dissolved in the soil solution during flooded conditions, probably due to the co-solubilization with Mn oxides under low redox potential conditions. However, rice accumulated Ni at a higher rate during the drainage period than in the flooding period. Although the Ni concentration in the soil solution was lowest in the drainage period, the relative concentration to Fe (i.e., Ni/Fe ratio) was much higher than that in flooded conditions. These relationships suggest that a potential measure to counter the transfer of Ni from the soil to rice in serpentine-affected paddy fields is to increase Fe phytoavailability during the drainage period.

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Section: Soil Propertiessupporting

confidence: 85%

Temporal patterns of nickel transfer from soil to rice in terraced paddy fields affected by serpentinite

Harada

Nakao

Matsuo

et al. 2023

Preprint

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“… Note . Soil textures are classified based on an international classification system of soil texture, as recommended by the International Soil Science Society (Takahashi et al., 2020). …”

Section: Methodsmentioning

confidence: 99%

Influence of Wind Velocity and Soil Size Distribution on Emitted Dust Size Distribution: A Wind Tunnel Study

Wang

et al. 2021

JGR Atmospheres

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The question of whether the emitted dust size distribution (EDSD) depends on wind velocity or soil size distribution (SSD) remains to be resolved. This study used wind tunnel tests to investigate the influence of wind velocity and SSD on EDSD. The results showed that EDSD was influenced by both wind velocity and soil texture, supporting the saltation bombardment theory. The ratios of PM2.5 to PM10 (RPM2.5/10) and PM1.0 to PM10 (RPM1.0/10), which reflect the EDSD in the range of 0–10 μm, both showed trends of increase with increasing friction velocity (u*) for all six tested soils. The trend of increase was more significant for RPM1.0/10 than for RPM2.5/10, which indicates that the content of finer dust in the range 0–10 μm increased with increasing u*. When u* increased from 0.51 to 0.68 m s−1, the ranges of increase for RPM2.5/10 and RPM1.0/10 were most significant for sandy soils, followed by sandy loam soils and then loamy soils, indicating that the effect of wind velocity on EDSD increased with increasing sand content in the soils. The EDSD was also influenced significantly by the fully dispersed SSD, especially the sand and silt contents in the soils. The RPM2.5/10 and RPM1.0/10 increased (decreased) logarithmically (linearly) with increasing sand (silt) content in these soils. The finding of this study represents enrichment of data regarding EDSD, which could lead to greater understanding of the roles of wind velocity and SSD in relation to EDSD.

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“… Note. Soil textures are classified based on an international classification system of soil texture, as recommended by the International Soil Science Society (Takahashi et al., 2020). …”

Section: Methodsmentioning

confidence: 99%

Comprehensive Effect of Soil Particle Size Composition and Wind Speed on Dust Emission Efficiency

Wang,

Zhang,

Zhang

et al. 2024

JGR Atmospheres

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Recent studies have shown that the dust emission efficiency (Ed) of some soil surfaces undergoes changes with wind speed and that such changes are related to soil properties. Through wind tunnel experiments, we investigate the comprehensive effect of soil particle size composition (PSC) (both minimally and fully dispersed) and friction wind speed (u*) on Ed. Results show that Ed initially increases and then decreases as soil texture changes from fine to coarse, with intermediate‐textured soils having the highest Ed and the strongest dust emission ability. The ratio of silt to sand in soil is an index suitable for reflecting the influence of soil texture on Ed. The PSC of soil dry aggregate is a factor that directly determines Ed. With increasing u*, Ed tends to increase for coarse‐ and intermediate‐textured soils but not for fine‐textured soil, supporting the view that Ed is influenced by u* and that the influence is related to soil PSC. Despite the fitting power function equations between Ed and u* for some soils failing to pass the significance test in this study, the substantial influence of soil texture on the power exponents implies potential for establishing an equation capable of expressing the comprehensive effect of soil texture and u* on Ed.

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Conversion of soil particle size distribution and texture classification from ISSS system to FAO/USDA system in Japanese paddy soils

Cited by 15 publications

References 10 publications

Temporal patterns of nickel transfer from soil to rice in terraced paddy fields affected by serpentinite

Temporal patterns of nickel transfer from soil to rice in terraced paddy fields affected by serpentinite

Influence of Wind Velocity and Soil Size Distribution on Emitted Dust Size Distribution: A Wind Tunnel Study

Comprehensive Effect of Soil Particle Size Composition and Wind Speed on Dust Emission Efficiency

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