Rainfall and Surface Roughness Effects on Soil Loss and Surface Runoff

Jester, Werner; Klik, Andreas; Hauer, G.; Hebel, B.; Truman, C. C.

doi:10.13031/2013.4577

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Runoff retention was also positively correlated with soil surface roughness. This effect was described by Jester et al [35] in laboratory measurements. In a similar manner, surface roughness has been shown to negatively correlate with soil loss [36].…”

Section: Rain Simulationmentioning

confidence: 51%

The Effect of Reservoir Cultivation on Conventional Maize in Sandy-Loam Soil

Vejchar,

Velebil,

Kubín

et al. 2023

Agriculture

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Maize grown on sloped areas is susceptible to surface runoff and soil erosion, especially if traditional technology with tillage is employed. As a result, other solutions are being sought that address this risk and are acceptable to farmers. The combination of inter-row cultivation with the formation of small reservoirs appears to be a suitable alternative solution applicable in traditional corn cultivation. In the years 2020, 2021, and 2022, three plots of land in southern Bohemia, Czech Republic, were selected for testing, on which this approach was tested. During the field experiments, three variants were compared each year: inter-row cultivation with reservoirs, inter-row cultivation only, and a control without any mechanical intervention. All variants were subjected to rain simulation, from which the surface runoff was evaluated. The highest retention of runoff was manifested with reservoir cultivation by 2.4–4.2 min, compared to the cultivated variant, and 2–4.2 min compared to the control. This result would correspond to a difference of 5.7–9.8 mm retained precipitation and 4.6 to 7.3 mm, respectively. The hydraulic conductivity of the soil was evaluated after canopy closure. The lowest values were invariably reached in the reservoirs, up to 88% lower than with the cultivated variant and 79% lower than the control. The fresh matter yield of forage maize was shown to be inconclusively higher by up to 10% in 2020 and 2022 in cultivation with reservoirs. However, the dry matter yield was always lower in the variant with reservoirs compared to inter-row cultivation only. Overall, reservoir cultivation appears to be an effective method for the retention of rainwater on agricultural land with a slope up to 6° without a significant effect on the yield of maize.

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Section: Rain Simulationmentioning

confidence: 51%

The Effect of Reservoir Cultivation on Conventional Maize in Sandy-Loam Soil

Vejchar,

Velebil,

Kubín

et al. 2023

Agriculture

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“…Soil microtopography affects the occurrence and evolution of soil erosion through changes in elevation that alter water flow direction and hydraulic characteristics [1,2]. Microtopographic properties can promote or hinder soil erosion in two different ways [3][4][5][6][7][8] because of the high dynamic and random changes in microtopography [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Response Relationship between Microtopographic Variation and Slope Erosion under Sand-Cover

Wang

Li³

et al. 2019

Water

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Slope microtopography is an important factor that affects the process of slope erosion. We quantified the responses between microtopography and the amount of erosion on overland sand slope and loess slopes through an indoor artificial simulated rainfall experiment. Three continuous rainfall tests under 1.5 mm/min rain intensity were used to analyze the spatial variation of slope microtopography and soil erosion with three-dimensional laser scanning technology. Our results show that under 0.5, 1.0, and 1.5 cm sand-covered slopes, the runoff time of the first rainfall is delayed by 18, 19, and 23 min, respectively, compared with the loess slope. Furthermore, the average sediment concentration on the slope decreased with subsequent rainfall events. The total erosion of the slope under 0.5, 1.0, and 1.5 cm sand was 4.24, 3.57, and 5.40 times that of the loess slope, respectively. The erosion of the sand-covered slopes was much larger than that of the loess slope. The length of the main sand production area was about 2.4 times that of the loess slope and the peaks of the erosion amount of the slope were mostly distributed in the lower part of the slope. As the rainfall progressed, the microtopographic factors of the loess slopes increased significantly (p < 0.05), and the microtopographic factors of the sand slopes increased, but not significantly (p > 0.05). We found that the microtopographic factors with the strongest erosion responses to the loess slope and the sand-covered slope were surface incision and surface roughness. The response relationship between microtopographic variation and erosion of the loess slope was stronger than the sand-covered slope, and suggests that other, unaccounted-for factors may be affecting the erosion of sand-covered slopes. This study provides a reference for erosion mechanisms of the wind–water erosion crisscross region.

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Rainfall and Surface Roughness Effects on Soil Loss and Surface Runoff

Cited by 2 publications

References 3 publications

The Effect of Reservoir Cultivation on Conventional Maize in Sandy-Loam Soil

The Effect of Reservoir Cultivation on Conventional Maize in Sandy-Loam Soil

Response Relationship between Microtopographic Variation and Slope Erosion under Sand-Cover

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