Size Distribution of Eroded Sediment from Two Tillage Systems

Deizman, M. M.; Mostaghimi, S.; Shanholtz, V. O.; Mitchell, James K.

doi:10.13031/2013.30617

Cited by 10 publications

(5 citation statements)

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“…This suggestion is similar to Deizman et al's (1987) conclusion that on their plots overland flow had insufficient energy to transport the larger aggregates and primary particles. However, in Deizman et al's study a limiting factor on the energy of the overland flow was the size of their runoff plots (5.5 m by 18.3 m), whereas in the present study the runoff plot was specifically chosen to encompass the entire interrill portion of the hillslope.…”

Section: Discussionsupporting

confidence: 84%

“…The available evidence suggests that the size difference between the matrix soil and the eroded sediment results from the interrill flow not being competent to transport the coarser fraction of the sediment supplied to it by raindrop detachment. This suggestion is similar to Deizman et al's (1987) conclusion that on their plots overland flow had insufficient energy to transport the larger aggregates and primary particles. However, in Deizman et al's study a limiting factor on the energy of the overland flow was the size of their runoff plots (5.5 m by 18.3 m), whereas in the present study the runoff plot was specifically chosen to encompass the entire interrill portion of the hillslope.…”

Section: Discussionsupporting

confidence: 84%

“…Meyer et al, 1980), or plots have been pretreated to mimic some agricultural condition (e.g. Alberts et al, 1983;Deizman et al, 1987;Gilley et al, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Size characteristics of sediment in interrill overland flow on a semiarid hillslope, Southern Arizona

Parsons

Abrahams

Luk

1991

Earth Surf Processes Landf

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This study examines the size characteristics of sediment removed from a semiarid hillslope by interrill overland flow. Rainfall simulation experiments were conducted on a runoff plot 18 m wide and 35 m long established on a piedmont hillslope in southern Arizona. The top of the plot coincided with the hillslope divide, and its outlet was located within a shallow rill. Samples of runoff were obtained from two cross-sections located in the interrill portion of the plot upslope of the rill and from a calibrated flume through which was directed interrill overland flow reaching the bottom of the plot. Analyses of sediment contained in these samples showed that sediment in interrill flow is finer than the matrix soil. The fineness of the interrill sediment compared to the matrix soil appears to be due to the inability of interrill overland flow to transport the coarser fraction of the sediment supplied to it by raindrop detachment. This finding implies that the rate of soil erosion in interrill areas is not, as is commonly supposed, limited by the rate at which raindrops can detach sediment but by the rate at which they detach sediment of a size that the overland flow is competent to transport. The relative fineness of sediment eroded from this hillslope is consistent with other evidence for the recent evolution of shrub-covered hillslopes in southern Arizona.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionsupporting

confidence: 84%

See 1 more Smart Citation

Size characteristics of sediment in interrill overland flow on a semiarid hillslope, Southern Arizona

Parsons

Abrahams

Luk

1991

Earth Surf Processes Landf

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“…The development of structure in soils is also important for controlling wind and/or water erosion processes (Lal and Elliott, 1994; Skidmore et al, 1994). For example, the presence of large stable soil fragments in seedbeds promotes the occurrence of surface roughness, reducing soil erodibility by wind (Chepil, 1953) as well as water erosion (Deizman et al, 1987). Well‐structured soils have higher infiltration rates and can maintain their pore system in a stable state longer than soils formed by weak structural units (Kay, 1990).…”

mentioning

confidence: 99%

Soil Structural Disturbance Effects on Crop Yields and Soil Properties in a No‐Till Production System

et al. 2004

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The development of structure in soils is also important for controlling wind and/or water erosion processes (Lal The development of well-structured soils is a goal for achieving and Elliott, 1994;Skidmore et al., 1994). For example, sustainable and productive agricultural systems. Nevertheless, the maintenance of soil structure in continuous no-till (NT) soils has the presence of large stable soil fragments in seedbeds sometimes been thought to induce soil conditions that are detrimental promotes the occurrence of surface roughness, reducing to crop yields. The objectives of this research were to characterize soil erodibility by wind (Chepil, 1953) as well as water the effects of periodic tillage disruption in otherwise NT systems on erosion (Deizman et al., 1987). Well-structured soils soil properties and the yields of winter wheat (Triticum aestivum L.), have higher infiltration rates and can maintain their pore double-cropped soybean [Glycine max (L.) Merr.], and maize (Zea M. Díaz-Zorita,

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“…Young and Onstad (1976) developed an equation to simulate the PSD of eroded sediment from Midwest soil that was based on the PSD of the matrix soil, organic matter, and water content. Deizman, Mostaghimi, Shanholtz, and Mitchell (1987) conducted 12 field rainfall tests and obtained quantitative simulation of the PSD of eroded sediment from a no‐till system based on rainfall amount, slope gradient ( J ), initial soil moisture content, and particle composition of matrix soil. Lagos‐Avid and Bonilla (2017) realized a simulation of the PSD of eroded sediment from experimental soils at different sites based on the particle composition of the matrix soil, the ratio between soil water content and total porosity, the erodibility factor, and the vertical length of the hillslope.…”

Section: Introductionmentioning

confidence: 99%

Quantitative simulation of the particle size distribution of eroded sediment on grass slopes with intact plants and root slopes with the aboveground parts removed

Liu

Fan

Jia

et al. 2021

Soil Science Soc of Amer J

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To quantitatively simulate the particle size distribution (PSD) of eroded sediment on grass and root slopes, simulated rainfall experiments were implemented on grass slopes with intact plants and root slopes with the aboveground parts removed. There were four coverage degrees (Cr) (0, 20, 40, and 60%), two rainfall intensities (R) (60 and 90 mm h–1) and two slope gradients (J) (15° and 25°). The content of sand‐sized particles was greatest in the eroded sediment from the grass slope, whereas the content of fine silt‐sized particles was greatest in the eroded sediment from the root slope. The PSD of eroded sediment was influenced by Cr, R, J, and hydrodynamic characteristics [flow velocity (u), flow depth (h), Reynolds number (Re), Froude number (Fr), resistance coefficient (f), runoff shear force (t), runoff power (w), unit runoff power (P)]. Through grey relational analysis, the relational degree (γ) of these impact factors to the PSD of eroded sediment was ranked γR > γRe > γJ > γh > γw > γu > γt > γP > γFr > γCr > γf on the grass slope and γR > γRe > γJ > γh > γt > γw > γu > γFr > γp > γf > γCr > on the root slope. The radial basis function neural network performed well at simulating the PSD of eroded sediment on both the grass and root slopes. These results lay the foundation for the establishment of a physics‐ based soil erosion model and a chemical transport model.

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Size Distribution of Eroded Sediment from Two Tillage Systems

Cited by 10 publications

References 0 publications

Size characteristics of sediment in interrill overland flow on a semiarid hillslope, Southern Arizona

Size characteristics of sediment in interrill overland flow on a semiarid hillslope, Southern Arizona

Soil Structural Disturbance Effects on Crop Yields and Soil Properties in a No‐Till Production System

Quantitative simulation of the particle size distribution of eroded sediment on grass slopes with intact plants and root slopes with the aboveground parts removed

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