Comparison of the effects of litter covering and incorporation on infiltration and soil erosion under simulated rainfall

Wang, Lunjiang; Zhang, Guanghui; Zhu, Pingzong; Wang, Xue

doi:10.1002/hyp.13779

Cited by 38 publications

(15 citation statements)

References 52 publications

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“…As determined in this study, the water-holding capacity of the semi-decomposed and non-decomposed litter layers was significantly different due to the changes in litter coverage and morphological characteristics 25 – 29 . The maximum water-holding capacity of the semi-decomposed litter layer is greater compared to the litter non-decomposed layer, which is consistent with previous results 40 .…”

Section: Discussionmentioning

confidence: 60%

“…By studying the effects of different vegetation litters on the characteristics of overland flow, Sun et al 28 found that litter coverage could significantly reduce the Reynolds number and flow power by 8–29% and 56–80%, respectively. Wang et al 29 studied the effects of four types of litter coverage and incorporation on soil erosion and found that the amount of erosion under litter-incorporated treatment was 5.4 times as large as that of litter-covered treatment. As mentioned above, litter affect hydrological and erosion processes greatly.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the effects of litter decomposition process on soil erosion under simulated rainfall

Zhu

Cheng

2022

Sci Rep

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Overland flow parameters play a pivotal role in soil erosion, which are affected by litter cover in forests. In this study, the litter layer of Pinus massoniana (Masson pine) was divided into non-decomposed and semi-decomposed layers. Seven litter coverage mass gradients, two slopes (5° and 10°), and two rainfall intensities (60 and 120 mm·h−1) were used for a systematic study of the effects of litter layer changes on overland flow dynamic characteristics. The objectives of this study were to explore the soil erosion process in litter different decomposition stages; to explore various relationships between hydraulic variables and litter characteristics. In the process of litter decomposition, overland flow patterns changed from transitional flow to laminar flow and from rapid flow to slow flow. The semi-decomposed layer’s Reynold’s number (Re), resistance coefficient (f), and soil separation rate ($${D}_{r}$$ D r ) were lower than that of the non-decomposed layer under the same conditions. Litter coverage, runoff and the diameter of the litter were major parameters that affected the Re, f, Fr, and Dr. Shrubs with wide leaves should be selected for understory vegetation replanting. The results of this study are helpful to understand the mechanisms of litter influencing erosion processes in different decomposition stages.

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Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Comparison of the effects of litter decomposition process on soil erosion under simulated rainfall

Zhu

Cheng

2022

Sci Rep

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“…Surface erosion or the release of the soil surface due to water flow can The litter layer is very influential in the magnitude of the kinetic energy of rain on the soil surface. Without a surface cover, raindrops can hit the soil surface and cause the surface layer to be released [Wang et al, 2020]. Mechanically, this process takes place continuously and causes an increase in the slope of the slope.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Riverbank Stability Due to Bamboo Vegetation in Walanae River, South Sulawesi, Indonesia

Pertiwi¹,

Rauf²,

Lullulangi³

2021

J. Ecol. Eng.

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Bamboo vegetation is an endemic plant in Indonesia that grows on riverbanks. These plants have the potential to increase shear resistance due to the bond between the roots to the soil. However, an increase in plant weight due to its growth causes additional loads of soil. The condition triggers the release of soil on the slopes and causes riverbank sliding. Therefore, in developing the riparian ecological function, it is necessary to maintain the plants without neglecting the risk of physical damage to the river. This study aimed to estimate the risk of riverbank sliding due to the presence of bamboo plants by utilizing the bamboo vegetation conditions on the Walanae River. It was carried out on the 42.4 km riverbank in the middle area of Walanae watershed. The researchers selected 46 clumps of parring bamboo (Gigantochloa atter) as an endemic bamboo in this area and growing in the riverbank. The diameter of the bamboo trunk is the basis for an estimate of the weight of the bamboo clump. Furthermore, a numerical analysis was carried out by taking into account the load and shear resistance on the slope, including the weight of the plant. The research results indicated that bamboo is feasible to be applied for riverbank protection using the soil bioengineering method. The bamboo weight, which is indicated by the number of poles and diameter, significantly affects the stability of the slope. Therefore, the prevention of rising weight by harvesting method is critical to consider in riverbank protection.

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“…Litter types, coverage, quality, and other variables have an impact on slope soil erosion. Wang [18] compared the slopes covered by locust, pine, caragana and switchgrass with bare slopes and confirmed that the soil loss rate was reduced by 91%, 35%, 74% and 80%, respectively. Li [19] contrasted two typical litters on the loess plateau and found that the flow velocity on the slope decreased with the increase of litter cover as a power function.…”

Section: Introductionmentioning

confidence: 87%

Size Characteristics of Sediments Eroded under Different Masson Pine Litter Covers in South China

Zhu

Cheng

2021

Water

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The particle size distribution characteristics of runoff sediments are vital for understanding the effect of the mechanism of soil erosion on slopes. The objective of this study was to investigate the particle-size distribution of sediments eroded from slopes covered by different litter coverage masses under artificial rainfall simulation. Litter was spread on the surface of a soil tank according to different biomasses (0 g·m−2, 100 g·m−2, 200 g·m−2 and 400 g·m−2). The mean weight diameter (MWD), fractal dimension (D) and enrichment ratio (ER) are characteristic parameters of sediment particle size. The MWD and D were more sensitive to soil erosion and had a significant negative correlation with the slope angle and rainfall intensity. The performance of the MWD on the slope (5°) was less than the MWD on the slope (10°). The relationship between eroded sediment distribution characteristic parameters and the litter coverage mass had a significant influence on the content of coarse particles. The content of fine particles accelerated, decreased and then stabilized, whereas coarse particles increased first and then stabilized. The litter diameter and surface area were the main parameters that affected the MWD and D. Under different rain intensities and slopes, the ER varied inconsistently with litter coverage mass. Coarse particles were eroded easily and selectively, and soil erosion had no sorting effect on fine particles. These findings support the quantitative study of the relationship between the amount of litter coverage mass and the particle size of soil sediments.

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Comparison of the effects of litter covering and incorporation on infiltration and soil erosion under simulated rainfall

Cited by 38 publications

References 52 publications

Comparison of the effects of litter decomposition process on soil erosion under simulated rainfall

Comparison of the effects of litter decomposition process on soil erosion under simulated rainfall

Analysis of Riverbank Stability Due to Bamboo Vegetation in Walanae River, South Sulawesi, Indonesia

Size Characteristics of Sediments Eroded under Different Masson Pine Litter Covers in South China

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