Identifying sediment sources from the inter-gully area and gully area in a small watershed in the Loess Hilly Region of China

Li, Mian; Yang, Er; Ping, Li; Shen, Zhenzhou; Bao, Hongzhe; Ni, Yongxin

doi:10.1007/s12665-017-7114-7

Cited by 11 publications

(7 citation statements)

References 24 publications

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“…To date, the check‐dam has never been destroyed, and nearly no sediment has been lost. Therefore, the trap efficiency of the check‐dam over the past few decades can be considered to be 1.0 (M. Li et al, ). A land use map was constructed using Quick Bird imagery, and reconnaissance field surveys were completed in 2016.…”

Section: Methodsmentioning

confidence: 99%

Prevalent sediment source shift after revegetation in the Loess Plateau of China: Implications from sediment fingerprinting in a small catchment

et al. 2018

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As an important soil and water conversation endeavor, the 'Grain for Green' project launched by the Chinese Central Government almost doubled the vegetation cover on the Loess Plateau between 1999 and 2013. The corresponding vegetation restoration considerably diminished slope erosion throughout the Loess Plateau, although erosion in gullies remains poorly understood. In this paper, a composite fingerprinting approach was employed to assess the relative importance of the erosion of gully and slope soils within a typical dam-controlled catchment of the Loess Plateau. A total of 23 couplets were identified based on the deposited layer thicknesses and extreme rainfall event records along the sediment profile. The results suggest that gullies contributed 71% to the overall sediment proportion, and those sediments had an increased tendency to accumulate during 2010-2016 under the 'Grain for Green' project. The sediment inputs from slope areas were predicted to be 29%. The eroded gullies materials mainly consisted of silt-sized particles, which dominated the eroded sediment. Silt particles with sizes of 0.02-0.05 mm constituted the main particles in both deposit sediments and gully materials, whereas the slope areas mainly contained particle sizes of <0.01 mm. The check dam proved to be effective at trapping coarse silt with 27-42% of the total sediment content. This study presents reliable information on the importance of gullies as sediment source materials and verifies the applicability of tracing procedures for collecting information on sediment effluxes from both slopes and gullies.

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Section: Methodsmentioning

confidence: 99%

Prevalent sediment source shift after revegetation in the Loess Plateau of China: Implications from sediment fingerprinting in a small catchment

et al. 2018

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“…However, this explanation may be problematic as no sufficient data were available to support the relationship between the raise of channel base and reduction of gully erosion. Even for the same watershed, the relative proportions of sediment yield from the two parts were different for different study periods or methods (Li et al, 2017).…”

Section: Identification Of Sediment Sourcementioning

confidence: 99%

“…Studies showed that vegetation cover and topography control sediment yield on the CLP (Zhao et al, 2016) which will further change the sediment contribution proportion of the AC and BC. With farmland abandoned and returned to grassland since the late 1990s, the average erosion rate from the BC gradually decreased and sediment from the AC increased comparatively for Sidizui watershed in gullied hilly area which indicated that the sediment source changed with rehabilitation (Li et al, 2017). For a better understanding of the main sediment source area and variation of CLP with the large-scale implementation of 'Grain for Green' project, obtaining a useful reference for more scientifically sound land use and conservation measures, more information should be acknowledged on runoff dynamics and sediment movement process on the slope-gully system.…”

Section: Identification Of Sediment Sourcementioning

confidence: 99%

Soil Erosion and Controls in the Slope-Gully System of the Loess Plateau of China: A Review

Zhu

Zhou

2021

Front. Environ. Sci.

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The Loess Plateau has long been suffering from serious soil erosion of which erosion from the slope-gully system is now dominant. The slope-gully system is characterized with distinctive erosion distribution zones consisting of inner and inter gully areas wherein erosion patterns spatially vary, acting as both sediment source and the dominant sediment and water transport mechanism. In this paper, a substantial body of research is reviewed concentrating on the soil erosion processes and control practices in the slope-gully system. The inner gully area is identified as the main sediment source while runoff and sediment from the inter-gully upland is found to significantly affect down slope erosion processes. Correspondingly, the protective vegetation pattern and coverage should be strategically designed for different erosion zones with an emphasis on the critical vegetation cover and pattern to reduce sediment yield of the whole slope-gully system. Check-dam could change the base level of erosion and reduce the slope length of the gully side, which will further decrease the possibility and magnitude of gravity erosion. We concluded that understanding the erosion processes and implementing erosion practices for the slope-gully system are of importance and require more research efforts that emphasize: 1) the influence of upland runoff on erosion processes at downslope; 2) the relationship between hydraulic characteristics of overland flow and erosion process at a slope-gully system scale; 3) physical mechanisms of different vegetation patterns on the slope-gully erosion process.

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“…These techniques have the potential to provide more precise and reliable information on the contributions of gully and inter-gully areas to catchment sediment yields and for documenting spatial variations in such contributions and their controls (Feng et al, 2003;Li et al, 2017;Zhang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…They have been widely used in many areas of the world in recent years to address a range of questions and issues, for both scientific and management purposes (Collins et al, 2020) and Tang et al (2019) consider their potential for use in China, where their application to date includes studies undertaken in the Loess Plateau of China (e.g., Chen et al, 2016; Yang & Xu, 2010; Zhang et al, 2017). These techniques have the potential to provide more precise and reliable information on the contributions of gully and inter‐gully areas to catchment sediment yields and for documenting spatial variations in such contributions and their controls (Feng et al, 2003; Li et al, 2017; Zhang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Using check dam deposits to reconstruct changes in the sediment response of a small catchment on the Loess Plateau in China, during the period 1960–1990

Liu

Walling

Yang

et al. 2022

Hydrological Processes

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Information on both the magnitude and relative contributions of inter-gully and gully areas to the sediment yield from small catchments in the Loess Plateau of China represents an important requirement for understanding catchment sediment dynamics, assessing the sensitivity of catchment sediment budgets to environmental change and developing effective soil and water conservation strategies. Contemporary

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Identifying sediment sources from the inter-gully area and gully area in a small watershed in the Loess Hilly Region of China

Cited by 11 publications

References 24 publications

Prevalent sediment source shift after revegetation in the Loess Plateau of China: Implications from sediment fingerprinting in a small catchment

Prevalent sediment source shift after revegetation in the Loess Plateau of China: Implications from sediment fingerprinting in a small catchment

Soil Erosion and Controls in the Slope-Gully System of the Loess Plateau of China: A Review

Using check dam deposits to reconstruct changes in the sediment response of a small catchment on the Loess Plateau in China, during the period 1960–1990

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