Representing the role of soil moisture on erosion resistance in sediment models: Challenges and opportunities

Moragoda, Nishani; Kumar, Mukesh; Cohen, Sagy

doi:10.1016/j.earscirev.2022.104032

Cited by 31 publications

(10 citation statements)

References 72 publications

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“…Bulk density (BD) is strongly associated with soil hydraulic properties and penetration resistance (Wang et al 2018b(Wang et al , 2022. Soil cohesion (Coh) is also another variable commonly representing soil erosion resistance (Moragoda et al 2022). Generally, Coh increases with the increase of BD and the soil gets much harder to be detached by the external erosive force (Wang et al 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Soil erosion resistance reflects the soil's ability to resist detachment by water flow (Moragoda et al 2022), which is directly related to intrinsic soil properties and directly and/or indirectly affected by multiple extrinsic environmental factors driving the variations in soil properties (Zhang et al 2020), such as plant community near-surface characteristics like litter, biological soil crust (biocrusts), and plant roots (Vannoppen et al 2015;Sun et al 2016;Wang et al 2018aWang et al , 2022Liu et al 2020;Zhang et al 2020Zhang et al , 2021Liu et al 2022b). Litter either covering on or incorporating into the topsoil could impact soil properties thereby soil erosion resistance, and this effect is also substantially associated with the litter morphological characteristics (Liu et al 2020(Liu et al , 2022a.…”

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confidence: 99%

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Soil resistance to flowing water erosion as affected by tea planting age in Three Gorges Reservoir Area of China

Zhang¹,

Yang²,

Jia-jun³

et al. 2023

Soil Water Res.

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Soil erosion resistance is influenced by intrinsic soil properties and multiple external factors. This study investigated the effect of tea planting age on soil resistance to flowing water erosion (reflected by rill erodibility (K r ) and critical shear stress (τ c )) in Three Gorges Reservoir Area. One slope farmland (as the control) and five tea plantations cultivated for 3 to 34 years were selected for sampling sites. The results indicated that bulk density (BD), soil cohesion (Coh), water stable aggregate (WSA), mean weight diameter (MWD), soil organic carbon (SOC), litter density (LD), and root mass density (RMD) increased generally with tea planting age. Compared to the control, K r of tea plantations reduced by 71.1%-85.3%. The temporal variation in soil erosion resistance was controlled greatly by the variations in most near-surface characteristics. K r decreased with WSA, Coh, LD, RMD, and SOC following a power function (P < 0.01); τ c increased with MWD, LD, RMD, and SOC as an exponential function, with BD a power function, and Coh a logarithmic function (P < 0.01). In this study, K r could be simulated well by WSA and LD with a power function, and τ c could be simulated well by MWD and RMD with an exponential function.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Soil resistance to flowing water erosion as affected by tea planting age in Three Gorges Reservoir Area of China

Zhang¹,

Yang²,

Jia-jun³

et al. 2023

Soil Water Res.

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“…Therefore, the soil erodibility value is closely related to soil moisture. It is known that soil moisture has a complex and possibly controversial impact on soil erodibility [ 110 ]. Some studies found that K value and soil moisture were (extremely) significantly negatively correlated [ 47 , 71 , 100 , 101 , 105 , 108 ]: the increase of soil moisture in the early stage will enhance the degree of soil cohesion and aggregation of soil aggregates, reduce the formation of soil crusts, and soil particles will not be easily separated, and then to reduce erosion.…”

Section: Discussionmentioning

confidence: 99%

“…The erodibility K value of the same soil decreased, fluctuated, and increased by 1–15 times with the increase of soil moisture; the K value change of soil in a dry and wet state is also related to soil type [ 122 ]. Moragoda et al [ 110 ] found that dry soil has the lowest resistance to erosion and thus a high erodibility, and erosion resistance increases (erodibility decreases) with increasing antecedent moisture until a certain threshold. After reaching this threshold, soil resistance decreases with a further increase in moisture, and soils become more susceptible to erosion.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of Soil Erodibility in the Yinna Mountainous Area, Eastern Guangdong Province, China

Zhu

Liu

et al. 2022

IJERPH

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Soil erodibility research is of theoretical and practical significance to the prediction and prevention of regional soil erosion. At present, the study on soil erodibility in the lateritic red soil area of eastern Guangdong province is relatively lacking. Taking the forest land soil of the Yinna mountainous area as the research object, the physical and chemical properties (organic matter mass fraction, texture, moisture, bulk density, pH, aggregate content) of soil samples at different altitudes were measured with field survey sampling and indoor analysis. Soil erodibility K values were simulated with different models (the EPIC model, the Torri model, and the Shirazi model) and the regional applicability of the K simulation models was discussed. The influence of soil properties on soil erodibility was analyzed. The results showed that: (1) K values in the Yinna mountainous area are between 0.0250 and 0.0331 t·hm2·h/MJ·mm·hm2, and the K value in the subsoil layer (20–40 cm) is higher than that of the topsoil layer (0–20 cm). These values decreased significantly with the increase of altitude. The soil in the study area belongs to low–medium to medium erodible soil types. (2) The three models have certain applicability in the Yinna mountainous area, but the simulation results still lack validation. (3) Soil particle size composition is the most important factor affecting the K value in the study area. As far as the topsoil is concerned, K values increase with the increase of clay and silt content and decrease with the increase of sand content and aggregate stability. Soil erodibility has no significant correlation with pH and bulk density and has no clear relationship with the content of soil organic carbon and soil moisture. The research results can provide basic data for regional soil and water conservation and the construction of K value databases of different soil types in China.

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“…This process occurred very quickly, which can be explained by the fact that dry soil aggregates are more susceptible to slaking than wet aggregates (Sachs and Sarah 2017). For this reason, many studies conclude that soil erosion resistance increases with increasing soil moisture, at least up to a certain threshold value of soil moisture content (Moragoda et al 2022). However, our experimental setup involved dependent samples, so that the bare & wet treatments did not have any wet soil aggregates on the surface at the beginning of the second rainfall simulation, but were already sealed as just described.…”

Section: Surface Runoff Percolation and Soil Erosion In Different Soi...mentioning

confidence: 99%

Water’s path from moss to soil Vol. 2: How soil-moss combinations affect the soil water balance and soil erosion

Gall,

Nebel,

Scholten

et al. 2023

Preprint

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Mosses are key components of many ecosystems and particularly related to the soil water balance. In principle, the importance of mosses for water-related processes is known; however, their influence is rarely quantified in scientific studies. To fill this research gap, this study concentrates on the influence of mosses of different species on surface runoff, the amount of percolated water, soil erosion, and the temporal dynamics of soil water content. For this purpose, an experimental approach consisting of an ex situ rainfall simulation with infiltration boxes equipped with biocrust wetness probes was applied. On average, mosses significantly reduced surface runoff by 91% and soil erosion by almost 100%, while the amount of percolated water was increased by 85% compared with bare soils. Similarly, the moss treatments tended to have lower water contents in 3 cm soil depth during 30 minutes of rainfall simulations compared to the bare treatments. However, specific effects of moss treatments were superimposed by desiccation cracks as well as soil hydrophobicity, two major factors that clearly override individual species effects. Therefore, it is imperative that further experiments will be conducted to elucidate the apparently underestimated effects of mosses and their specific traits on the soil water balance and sediment transport.

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Representing the role of soil moisture on erosion resistance in sediment models: Challenges and opportunities

Cited by 31 publications

References 72 publications

Soil resistance to flowing water erosion as affected by tea planting age in Three Gorges Reservoir Area of China

Soil resistance to flowing water erosion as affected by tea planting age in Three Gorges Reservoir Area of China

Characteristics of Soil Erodibility in the Yinna Mountainous Area, Eastern Guangdong Province, China

Water’s path from moss to soil Vol. 2: How soil-moss combinations affect the soil water balance and soil erosion

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