Rill erodibility as influenced by soil and land use in a small watershed of the Loess Plateau, China

Li, Zhenwei; Zhang, Guanghui; Geng, Ren; Wang, Hao

doi:10.1016/j.biosystemseng.2014.11.002

Cited by 59 publications

(47 citation statements)

References 36 publications

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“…() and Li et al . () observed a significant increase in the level of erodibility in various agricultural soils when the organic matter was less than 2%. In our study, the soils most resistant to erosion (Cluster A), precisely, presented a higher organic matter content than the threshold cited (CH 1 = 2.49%, Table ), whereas the most erodible ones (Cluster B) were found to be below the cited threshold (CH 1 = 1.29%, Table ).…”

Section: Discussionsupporting

confidence: 92%

Assessment of soil factors controlling ephemeral gully erosion on agricultural fields

Barrio

Campo‐Bescós

Giménez

et al. 2018

Earth Surf Processes Landf

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The soil factor is crucial in controlling and properly modeling the initiation and development of ephemeral gullies (EGs). Usually, EG initiation has been related to various soil properties (i.e. sealing, critical shear stress, moisture, texture, etc.); meanwhile, the total growth of each EG (erosion rate) has been linked with proper soil erodibility. But, despite the studies to determine the influence of soil erodibility on (ephemeral) gully erosion, a universal approach is still lacking. This is due to the complex relationship and interactions between soil properties and the erosive process. A feasible soil characterization of EG erosion prediction on a large scale should be based on simple, quick and inexpensive tests to perform. The objective of this study was to identify and assess the soil properties – easily and quickly to determine – which best reflect soil erodibility on EG erosion. Forty‐nine different physical–chemical soil properties that may participate in establishing soil erodibility were determined on agricultural soils affected by the formation of EGs in Spain and Italy. Experiments were conducted in the laboratory and in the field (in the vicinity of the erosion paths). Because of its importance in controlling EG erosion, five variables related to antecedent moisture prior to the event that generated the gullies and two properties related to landscape topography were obtained for each situation. The most relevant variables were detected using multivariate analysis. The results defined 13 key variables: water content before the initiation of EGs, organic matter content, cation exchange capacity, relative sealing index, two granulometric and organic matter indices, seal permeability, aggregates stability (three index), crust penetration resistance, shear strength and an erodibility index obtained from the Jet Test erosion apparatus. The latter is proposed as a useful technique to evaluate and predict soil loss caused by EG erosion. Copyright © 2018 John Wiley & Sons, Ltd.

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Section: Discussionsupporting

confidence: 92%

Assessment of soil factors controlling ephemeral gully erosion on agricultural fields

Barrio

Campo‐Bescós

Giménez

et al. 2018

Earth Surf Processes Landf

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“…In addition, the soil erodibilities in this study had a similar varied range as that reported by Li et al . (), while they were 1.79 to 14.92 times greater than those of the hillslopes reported by Wang et al . (), and were one‐order of magnitude less than those of the gully slopes reported by Zhang et al .…”

Section: Resultsmentioning

confidence: 56%

“…On average, the K r of cropland, grasslands, woodlands and shrubland were 0.1219, 0.0166, 0.0131 and 0.007 s m ‐1 , respectively, and the shrubland showed a higher decrease in soil erodibility than the other land uses, which is different from the findings of Li et al . () and Zhang et al . () who found that the K r of shrubland on the hillslopes and gully slopes was greater than that of grasslands.…”

Section: Resultsmentioning

confidence: 95%

“…Correlation analysis has also proven that the τ c value was positively correlated with OMC, WSA, MWD and RMD of different root diameters (Table , P < 0.05). The result corroborates the conclusions of most related previous studies (Gyssels, ; De Baets et al ., , ; Wang et al ., ; Li et al ., ), however, it is not consistent with the results of Wang et al . () who reported that no significant relationships were found between τ c and soil properties (SBD and OMC).…”

Section: Resultsmentioning

confidence: 96%

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Impacts of different vegetation restoration options on gully head soil resistance and soil erosion in loess tablelands

Guo

Wang

et al. 2020

Earth Surf Processes Landf

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Vegetation restoration is identified as an effective approach to control soil erosion and affects soil detachment and resistance to concentrated flow on the Loess Plateau. However, the effects of vegetation restoration at gully heads in loess‐tableland remains unclear. This study was performed to investigate the effects of nine vegetation restoration types at gully heads on soil detachment rate (Dr) and soil resistance to concentrated flow (i.e. soil erodibility, Kr and critical shear stress, τc). Undisturbed soil samples were collected from nine vegetation‐restored lands and one slope cropland (as the control) and were subjected to a hydraulic flume to obtain Dr values of gully heads under six inflow discharges (0.5–3.5 L s‐1). The results showed that the Dr values of nine revegetated gully heads were 77.11% to 95.81% less than that of slope cropland, and the grassland dominated by Cleistogenes caespitosa and the shrubland dominated by Hippophae rhamnoides had a relatively greater decrease in Dr than those of other seven restoration types. The Dr value of nine revegetated gully heads could be better simulated by stream power than by flow velocity and shear stress and was also significantly affected by soil disintegration rate (positively), soil bulk density, saturated hydraulic conductivity, organic matter content, and water‐stable aggregate stability (negatively). Additionally, roots with diameters of 0 to 0.5 mm showed a greater effect on Dr than those with larger diameters. Compared to cropland, the nine restored types reduced Kr by 76.26% to 94.26% and improved τc by 1.51 to 4.68 times. The decrease in Kr and the increase in τc were significantly affected by organic matter content, water‐stable aggregate, mean weight diameter of aggregate and root mass density. The combination of grass species (Cleistogenes caespitosa) and shrub (Hippophae rhamnoides) could be considered the best vegetation restoration types for improving soil resistance of gully heads to concentrated flow. © 2019 John Wiley & Sons, Ltd.

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“…On one hand, many studies have reported the significant effects of land use on chemical and physical properties of soil and so, indirectly, on the environment (Busse et al 2009;Shi et al 2011;Li et al 2014;Traoré et al 2015;Xinjiang 2015). For example, it is indicated that land use information is significantly related to the spatial pattern of soil properties (Hu et al 2007;Başaran et al 2008;Shi et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of soil heavy metals in different land uses of an industrial area of Tehran (Iran)

Mahmoudabadi

Sarmadian

Moghaddam

2015

Int. J. Environ. Sci. Technol.

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Vegetation and different land uses may affect the spatial distribution of heavy metals in soils. The objective of the current article was to study the impact of industrial activities and land use type on the distribution of heavy metals in soils of Chitgar Forrest Park, located in industrial zone in the west of Tehran City. The soil samples were taken from 116 sites in a regular sampling grid (250 9 250 m) at a depth of 0-20 cm, including three different land uses, needle leaf forests, broadleaf forests and rangeland. Nitric acid-extractable form of seven metals, Cu, Cd, Fe, Mn, Ni, Pb and Zn, and DTPA-extractable form of Cu, Fe, Mn and Zn were measured. Soil texture, pH, organic carbon, carbon-to-nitrogen ratio, percentage of calcium carbonate and electrical conductivity (EC) were also determined. According to the maps and background amounts, heavy metals were affected by industrial activities and road traffic. Proximity to heavy traffic highway of Tehran-Karaj and large autoindustry plants can be considered for increasing metal concentrations. Results of statistical methods (coefficient variation and cluster analysis), besides geostatistical analysis (variogram and map), showed that total concentrations of heavy metals are controlled by intrinsic and extrinsic factors in the studied area. Although land use type did not affect the alteration in the distribution of total concentrations of heavy metals, it changed the distribution of DTPA form of heavy metals in the soils through affecting the soil organic matter.

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Rill erodibility as influenced by soil and land use in a small watershed of the Loess Plateau, China

Cited by 59 publications

References 36 publications

Assessment of soil factors controlling ephemeral gully erosion on agricultural fields

Assessment of soil factors controlling ephemeral gully erosion on agricultural fields

Impacts of different vegetation restoration options on gully head soil resistance and soil erosion in loess tablelands

Spatial distribution of soil heavy metals in different land uses of an industrial area of Tehran (Iran)

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