Determining the influence of catchment area on intensity of gully erosion using high-resolution aerial imagery: A 40-year case study from the Loess Plateau, northern China

Yang, Shengtian; Guan, Yabing; Zhao, Chang; Zhang, Chunbin; Bai, Juan; Chen, Ke

doi:10.1016/j.geoderma.2019.03.042

Cited by 35 publications

(22 citation statements)

References 62 publications

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“…Terrace construction and development is a long‐term (>10 year) and regional‐scale investment. However, if well maintained, they have been shown to reduce sediment yields from gullied regions (Chen and Cai, 2006; Yang et al ., 2019). Overall, reductions in sediment yield are proportional to the percentage of the area that is terraced.…”

Section: Assessment Of the Effectiveness Of Gully Treatments On Sedimmentioning

confidence: 99%

A review of the magnitude and response times for sediment yield reductions following the rehabilitation of gullied landscapes

Bartley

Poesen

Wilkinson

et al. 2020

Earth Surf Processes Landf

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Gully erosion is a major driver of elevated sediment yields across many areas of the globe, and considerable rehabilitation has occurred to reduce the amount of sediment eroded from gullies. However, compared to other forms of erosion, there has been little systematic review of the effectiveness of gully rehabilitation on reducing sediment yields. This study reviewed the global literature to provide an understanding of the potential sediment yield reductions that can occur following the rehabilitation of gullied landscapes. We focused on studies reporting a measured response on how gully and catchment sediment yield has changed since treatment. A total of 37 studies were found that met this criterion. The studies were partitioned into three broad categories, including those focused on: (i) treating the catchment above the gully; (ii) installing treatments in the actual gully channel; and (iii) a combination of approaches which include treating both the catchment and the gully channel. All the studies demonstrated a reduction in sediment yield following gully rehabilitation, with reported values ranging between 12 and 94%. The timeframes associated with the reductions in sediment yield varied considerably (2-80years). Applying a variety of rehabilitation measures, which generally includes treating both the hillslope above the gully, and trapping sediment within the gully, appears to result in shorter (median) timescales for sediment yield reduction. Overall, this review indicates that gully rehabilitation strategies combining both engineering and vegetation measures are often the most successful. Engineering measures such as check dams are important for stabilizing sites in the early phases to support the revegetation of gullies and adjacent hillslopes. However, vegetation is the key to the long-term success of gully rehabilitation. This is because many engineering structures eventually fail, or they have a limited life span as an active sediment trap.

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Section: Assessment Of the Effectiveness Of Gully Treatments On Sedimmentioning

confidence: 99%

A review of the magnitude and response times for sediment yield reductions following the rehabilitation of gullied landscapes

Bartley

Poesen

Wilkinson

et al. 2020

Earth Surf Processes Landf

View full text Add to dashboard Cite

show abstract

“…In this model, however, the erosivity factor is derived at each time step as a function of kinetic energy, rainfall depth, rainfall intensity, and time. First, rain energy is derived from rainfall intensity (Brown and Foster, 1987;Yin et al, 2017):…”

Section: Erosivity Factormentioning

confidence: 99%

“…Gully erosion rates and evolution can be monitored in the field or modeled on the computer. Field methods include dendrogeomorphology (Malik, 2008) and permanent monitoring stakes for recording erosion rates, extensometers for recording mass wasting events, weirs for recording water and suspended sediment discharge rates, and time series of surveys using total station theodolites (Thomas et al, 2004), unmanned aerial systems (UASs) (Jeziorska et al, 2016;Kasprak et al, 2019;Yang et al, 2019), airborne lidar (Perroy et al, 2010;Starek et al, 2011), and terrestrial lidar (Starek et al, 2011;Bechet et al, 2016;Goodwin et al, 2016;Telling et al, 2017). With terrestrial lidar, airborne lidar, and UAS photogrammetry, there are now sufficient-resolution topographic data to morphometrically analyze and numerically model fine-scale landscape evolution in GIS, including processes such as gully formation and the development of microtopography.…”

Section: Introductionmentioning

confidence: 99%

r.sim.terrain 1.0: a landscape evolution model with dynamic hydrology

et al. 2019

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Abstract. While there are numerical landscape evolution models that simulate how steady-state flows of water and sediment reshape topography over long periods of time, r.sim.terrain is the first to simulate short-term topographic change for both steady-state and dynamic flow regimes across a range of spatial scales. This free and open-source Geographic Information Systems (GIS)-based topographic evolution model uses empirical models for soil erosion and a physics-based model for shallow overland water flow and soil erosion to compute short-term topographic change. This model uses either a steady-state or unsteady representation of overland flow to simulate how overland sediment mass flows reshape topography for a range of hydrologic soil erosion regimes based on topographic, land cover, soil, and rainfall parameters. As demonstrated by a case study for the Patterson Branch subwatershed on the Fort Bragg military installation in North Carolina, r.sim.terrain simulates the development of fine-scale morphological features including ephemeral gullies, rills, and hillslopes. Applications include land management, erosion control, landscape planning, and landscape restoration.

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“…In this stage, new approaches were employed to study water erosion. In addition to traditional methods such as runoff plots, rainfall simulation, and small catchment monitoring, high-resolution remote sensing images (Wang et al, 2012;Duan et al, 2020), unmanned air vehicles UAV (Yang et al, 2019a), three-dimensional laser scanning (Fang et al, 2015), high-accuracy photogrammetry (Yao et al, 2019;Jiang et al, 2020), and compound fingerprinting technology (Chen et al, 2019) were introduced. International cooperation became more frequent as well.…”

Section: Fig 4 Is About Herementioning

confidence: 99%

Water erosion research in China: A review

Fang

2020

Preprint

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Abstract. China, among other countries, suffers severe soil loss. Water erosion studies in China have been conducted since 1922, and great achievements have since been obtained. Promoting water erosion research in China and globally requires a systematic review of water erosion studies in China. This paper reviews the history, major achievements of water erosion research in China as well as its influencing factors, water erosion processes, changing mechanisms, sediment source identification, global changes, and water erosion impacts on water pollution and crop yield, and research needs in future water erosion study. Threshold slope lengths and water erosion gradients must be considered in hydrologic/erosion models to accurately estimate water erosion. Sedimentation information has been well-mined using chronological tracers and rainfall characteristics in China, which help offset the lack of monitored data in understudied regions. Physical water erosion models that have been well developed in China however should be programmed, promoted, and continuously updated to promote global accessibility. Tracers are used to estimate water erosion, and the efficiency of elemental selection and result confirmation is significant when fingerprinting methods are used to identify sediment sources. Climate change and land use models should be coupled with water erosion models to predict global change impacts on water erosion. In future water erosion research, extreme rainstorm impact on water erosion, water erosion impact on crop yield, smart soil and water conservation, and ecological service-oriented water erosion in China should be evaluated in depth. This review is intended to present water erosion research over approximately 100 years in China to provide future directions and highlight the need for ongoing water erosion research in China and other countries.

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Determining the influence of catchment area on intensity of gully erosion using high-resolution aerial imagery: A 40-year case study from the Loess Plateau, northern China

Cited by 35 publications

References 62 publications

A review of the magnitude and response times for sediment yield reductions following the rehabilitation of gullied landscapes

A review of the magnitude and response times for sediment yield reductions following the rehabilitation of gullied landscapes

r.sim.terrain 1.0: a landscape evolution model with dynamic hydrology

Water erosion research in China: A review

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