Correlating check dam sedimentation and rainstorm characteristics on the Loess Plateau, China

Li, Xungui; Wei, Xia; Wei, Ning

doi:10.1016/j.geomorph.2016.04.017

Cited by 32 publications

(7 citation statements)

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“…Furthermore, Zhang et al () investigated the relationship between annual specific sediment yields and annual rainfall was a relatively good linear relationship in a small dam‐controlled watershed of the Yanhe River in the middle reaches of Yellow River. Moreover, Li et al (2016b) investigated that the layered sediment volume was closely related to the rainfall erosivity and the maximum rainfall intensity over 30 min in four typical check dams in the Wudinghe River watershed of the north‐central Loess Plateau. There was the similar research in semi‐arid Tunisia; Bouchnak et al () found out the relationship between head‐cut sediment yield and annual rainfall for both gentle and steep slope catchments had high correlation.…”

Section: Discussionmentioning

confidence: 99%

Sediment Yield Deduction from Check–dams Deposition in the Weathered Sandstone Watershed on the North Loess Plateau, China

Wei

et al. 2016

Land Degrad Dev

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As the basic unit of erosion and sediment yield, it was critical to determine the amount of soil erosion and sediment yield in the small watersheds for sustaining a reasonable water resource and sediment regulation system. In this study, we determined the sediment yield from the dams‐controlled watershed on the North Loess Plateau. Three check dams in the watershed were investigated by drilling ten‐hole sedimentation cores. The corresponding flood couplets were dated according to thickness of deposition layers, distribution of sediment particle size and historical erosive rainfall events. On the basis of the check dams capacity curve, the soil bulk density and the thickness of couplets, the deposit mass of check dams, and then the sediment yield of watershed at different temporal and spatial scale were deducted. In total of the 33, 60 and 55 couplets were corresponded to individual flood events in the dam MH1# from 1976 to 1984, the dam MH2# from 1985 to 2007, and the dam MH4# from 1981 to 2009, respectively. The specific sediment yield for flood events was 1,188.5–11,527.9 Mg km−2, 1,278.6–17,136.7 Mg km−2, and 3,395.9–33,698.5 Mg km−2, and the annual average sediment yield was 10,728.6 Mg (km2 · a)−1, 12,662.9 Mg (km2 · a)−1, and 16,753.3 Mg (km2 · a)−1 in dam MH1#, MH2# and MH4# controlled watershed, respectively. The sediment yields were inversely proportional to the dams – controlled areas. For the whole watershed, the annual average sediment yield was 14,011.1 Mg (km2 · a)−1 from 1976 to 2009. There were large amounts of sediments (42.3–50.5%) were intercepted gradually along the way from small watersheds to the river channel. And the minimum rainfall for sediment deposited in the dams was greater than 20 mm in this watershed. The results of this study suggested that the sediments retained behind check dams were helpful to quantifying the amount of erosion sediment yield and understanding the soil erosion evolution in the small and ungauged watersheds. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Sediment Yield Deduction from Check–dams Deposition in the Weathered Sandstone Watershed on the North Loess Plateau, China

Wei

et al. 2016

Land Degrad Dev

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“…According to previous studies, there were strong positive correlations between couplet SSY and the intensity of storm (Jin et al, 2017;Li et al, 2016;Wei et al, 2017;Zhang et al, 2007). In other words, there was one-to-one correspondence between SSY of each couplet and the precipitation of an individual hydrological event, that is, the principle of 'great sand corresponding to heavy rain'.…”

Section: Accurately Dating the Jb Sequence Since 1960smentioning

confidence: 89%

“…The visible deposition couplet with double-layer and annual freeze-thaw layer of 'bean curd' structure is easy to identify from the sediment profile in the field. Therefore, the sediment sequences within the check dams and landslide-dammed reservoirs are the ideal material to reconstruct inter-annual changes of soil erosion, hydrologic events, eco-environment, land use and human activities on the CLP during the past hundreds of years (Chen et al, 2017;Jin et al, 2017;Li et al, 2016;Wang et al, 2017;Wei et al, 2017;Zhao et al, 2015Zhao et al, , 2017. For example, Zhang et al (2009) traced eco-environmental changes in the Huangtuwa landslide-dammed reservoir using the distributions of pollen and annual freeze-thaw layers, and further discussed sediment discharge changes in response to different land uses during the 31 years after 1569.…”

Section: Introductionmentioning

confidence: 99%

New insights into dating the sediment sequence within a landslide-dammed reservoir on the Chinese Loess Plateau

Wang

Jin

et al. 2019

The Holocene

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The deposition couplets within the check dams and landslide-dammed reservoirs on the Chinese Loess Plateau (CLP) document the processes and histories of watershed soil erosion, transportation and deposition, related to floods, eco-environment and land use changes, and human activities. Previously, dating the couplets was dominantly dependent on multiple intercomparisons among specific sediment yields of visible couplets, 137Cs activities distributions and erosive rainfall events by meteorological records. However, inter-annual division of the deposition couplets and dating historical sequence beyond meteorological records in the landslide-dammed reservoir are little known. Based on high-resolution XRF core scanning on a 22.75 m sediment sequence in Jingbian (JB) landslide-dammed reservoir on the central hilly-gully area of the CLP, and cross checking of multiple dating methods, this study tried to propose a new method to build the accurate chronology sequence based on inter-annual division by annual freeze-thaw layer and to further date the sediment without rainfall records. The results showed that a total of 126 deposition couplets and 78 annual freeze-thaw layers were identified in the JB sequence. Multimethod cross-dating, including 137Cs activities, annual freeze-thaw layers, couplet specific sediment yield and modern rainfall records, was the most accurate method of dating the JB sediment sequences since 1960s with detail meteorological records. Furthermore, the correspondence between annual freeze-thaw layers and the historical grades of flood index from literature was the valid method to date the JB historical sequences without rainfall records. Consequently, the JB sequence was deposited during the period between 1855 and 2014. High-resolution dating of the JB sequence provides the chronology for recovering natural and anthropogenic information on the central hilly-gully area of CLP since 1850s. The proposed methods will also shed new light on the accurate dating of the sediment sequences within other check dams and landslide-dammed reservoirs on the central and northern CLP.

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“…Overall, the JRB is characterized by abundant precipitation and high temperature in summer and by rare precipitation and low air temperature in winter. Loessial soil and dark loessial soil are two typical types of soil which are highly erodible and widely distributed in the study areas [38,39]. Nearly 60% of annual precipitation is concentrated in the flood season (from June to September), which makes water loss and soil erosion occur frequently in the JRB.…”

Section: Study Areamentioning

confidence: 99%

Copula-Based Abrupt Variations Detection in the Relationship of Seasonal Vegetation-Climate in the Jing River Basin, China

Jing

Huang

et al. 2019

Remote Sensing

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Understanding the changing relationships between vegetation coverage and precipitation/temperature (P/T) and then exploring their potential drivers are highly necessary for ecosystem management under the backdrop of a changing environment. The Jing River Basin (JRB), a typical eco-environmentally vulnerable region of the Loess Plateau, was chosen to identify abrupt variations of the relationships between seasonal Normalized Difference Vegetation Index (NDVI) and P/T through a copula-based method. By considering the climatic/large-scale atmospheric circulation patterns and human activities, the potential causes of the non-stationarity of the relationship between NDVI and P/T were revealed. Results indicated that (1) the copula-based framework introduced in this study is more reasonable and reliable than the traditional double-mass curves method in detecting change points of vegetation and climate relationships; (2) generally, no significant change points were identified during 1982–2010 at the 95% confidence level, implying the overall stationary relationship still exists, while the relationships between spring NDVI and P/T, autumn NDVI and P have slightly changed; (3) teleconnection factors (including Arctic Oscillation (AO), Pacific Decadal Oscillation (PDO), Niño 3.4, and sunspots) have a more significant influence on the relationship between seasonal NDVI and P/T than local climatic factors (including potential evapotranspiration and soil moisture); (4) negative human activities (expansion of farmland and urban areas) and positive human activities (“Grain For Green” program) were also potential factors affecting the relationship between NDVI and P/T. This study provides a new and reliable insight into detecting the non-stationarity of the relationship between NDVI and P/T, which will be beneficial for further revealing the connection between the atmosphere and ecosystems.

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Correlating check dam sedimentation and rainstorm characteristics on the Loess Plateau, China

Cited by 32 publications

References 50 publications

Sediment Yield Deduction from Check–dams Deposition in the Weathered Sandstone Watershed on the North Loess Plateau, China

Sediment Yield Deduction from Check–dams Deposition in the Weathered Sandstone Watershed on the North Loess Plateau, China

New insights into dating the sediment sequence within a landslide-dammed reservoir on the Chinese Loess Plateau

Copula-Based Abrupt Variations Detection in the Relationship of Seasonal Vegetation-Climate in the Jing River Basin, China

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