Characteristics of pulsed runoff-erosion events under typical rainstorms in a small watershed on the Loess Plateau of China

Wu, Lei; Jiang, Jun; Li, Gouxia

doi:10.1038/s41598-018-22045-x

Cited by 38 publications

(18 citation statements)

References 47 publications

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“…The highest sediment concentration maybe reaches as high as about 1000 kg/m 3 in erosion-prone soil areas under special rainfall conditions [28,29] , but the investigated value in the existed researches is much lower than this possible maximum. Therefore, it is of great importance to evaluate the measurement error of traditional stirring-sampling method for the full range of possible sediment concentrations for various soil types and its correction possibility, so as to provide a reliable basic data for soil erosion research.…”

Section: Introduction 1mentioning

confidence: 90%

Measurement errors on sediment concentration from traditional runoff collection tanks and its correction possibility

Huang

Zhao

et al. 2019

International Journal of Agricultural and Biological Engineering

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Runoff plots are widely used worldwide to monitor water and soil losses. Sediment concentration in runoff collection tank is measured by stirring-sampling procedure, but this method may produce high measurement error due to the uneven mixing of collected sediments with water and soil particle deposition. This study aimed to identify the relationship between actual and measured sediment concentrations, so as to estimate the systematic error of sediment concentration measurement from runoff collection tank by traditional stirring-sampling procedure and the possibility to eliminate it. Four major soils including black soil, silt loess, clay loess, and purple soil in China were used to determine the correlation between the measured and designed sediment concentrations in laboratory.

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Section: Introduction 1mentioning

confidence: 90%

Measurement errors on sediment concentration from traditional runoff collection tanks and its correction possibility

Huang

Zhao

et al. 2019

International Journal of Agricultural and Biological Engineering

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“…For example, to address the relationship between land use and response of soil erosion, Wang Huan et al (2019) carried out quantitative attribution on soil erosion in different geomorphic areas of Sanchahe watershed, which showed that land use had the highest explanatory power for soil erosion, and the soil erosion risk of cultivated land was higher than that of other land use types (Borrelli et al 2017b;Dai et al 2017;Li et al, 2018). Based on the fixed-point monitoring of slope surface, the influence of different rainfall intensity on soil erosion mode is significant (Fullhart et al 2020;Wu et al 2018), and the spatial distribution of soil erosion directly affects the spatial change of soil nutrient loss (Zeng et al 2018). In addition, relevant researches have been carried out on the mechanism of soil erosion (Li et al 2017;Peng and Wang 2012;Shen et al 2008;Wang et al 2013a) , the construction of soil erosion model (Geissen et al 2008;Kheir et al 2010;Liu 2016;Xu et al 2008) and the temporal and spatial variation of soil erosion (He et al 2018;Wang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Explicitly Analyze the Soil Erosion in the Karst and Non-Karst Area of Different Morphological Types in Guizhou of China

Lan

Fan

Zhao

et al. 2021

Preprint

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How to explicitly understanding the soil erosion intensity change in different geomorphological types is one of key issues in the field of soil and water conservation. According to classification criterion of soil erosion intensity of China, the spatial soil erosion data with the resolution of 10 m×10m in Guizhou Province were obtained by combing with the multi-resolution remote sensing data of ALOS, ZY-3, GF-1, Landsat and GDEMV2, and 2762 field sampling data in 2010 and 2015, respectively. a spatial analysis model of soil erosion was improved to analyze the spatiotemporal change of soil erosion intensity in karst and non karst area of Guizhou province, which involved the spatial soil erosion data and different geomorphological type data of Guizhou province. The results show that the soil erosion intensity decreased by 6468.13km 2 in Guizhou Province from 2010 to 2015. The dynamic change intensity in the high-altitude area is larger than in the low-altitude area. The soil change intensity in karst area is higher than in non karst area, especially in the high and middle elevation area in Guizhou province. Moreover, the decreasing ratio of soil erosion intensity in karst area is generally larger than in non karst area, which can be used to explain that the ecological restoration projects and water soil conservation polices carried out in karst area has a good effect, especially in western of Guizhou province from 2010 to 2015, one the other hand, the soil erosion in non karst area should also be focused by local government in the future.

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“…Soil erosion causes land degradation, which can lead to problems in water and food security worldwide (Auerswald & Kutilek, 1998; de Vente, Poesen, & Verstraeten, 2013; Fang, Wang, & Shi, 2017; Komissarova & Paramonova, 2019). In China, soil erosion has become a serious environmental issue that limits the sustainable development of the economy (Abbas, Warrington, & Lei, 2019; Guo, Ma, Cai, et al, 2018; Wu, Jiang, Li, & Ma, 2018).…”

Section: Introductionmentioning

confidence: 99%

Rill erosion processes on a constantly saturated slope

Huang

Wang

2020

Hydrological Processes

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Rill erosion processes on saturated soil slopes are important for understanding erosion hydrodynamics and determining the parameters of rill erosion models. Saturated soil slopes were innovatively created to investigate the rill erosion processes. Rill erosion processes on saturated soil slopes were modelled by using the sediment concentrations determined by sediment transport capacities (STCs) measurement and the sediment concentrations at different rill lengths. Laboratory experiments were performed under varying slope gradients (5°, 10°, 15°, and 20°) and unit‐width flow rates (0.33, 0.67, and 1.33 × 10−3 m3 s−1 m−1) to measure sediment concentrations at different rill lengths (1, 2, 4, and 8 m) on saturated soil slopes. The measured sediment concentrations along saturated rills ranged from 134.54 to 1,064.47 kg/m3, and also increased exponentially with rill length similar to non‐saturated rills. The model of the rill erosion process in non‐saturated soil rills was applicable to that in saturated soil rills. However, the sediment concentration of the rill flow increased much faster, with the increase in rill length, to considerably higher levels at STCs. The saturated soil rills produced 120–560% more sediments than the non‐saturated ones. Moreover, the former eroded remarkably faster in the beginning section of the rills, as compared with that on the non‐saturated soil slopes. This dataset serves as the basis for determining the erosion parameters in the process‐based erosion models on saturated soil slopes.

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Characteristics of pulsed runoff-erosion events under typical rainstorms in a small watershed on the Loess Plateau of China

Cited by 38 publications

References 47 publications

Measurement errors on sediment concentration from traditional runoff collection tanks and its correction possibility

Measurement errors on sediment concentration from traditional runoff collection tanks and its correction possibility

Explicitly Analyze the Soil Erosion in the Karst and Non-Karst Area of Different Morphological Types in Guizhou of China

Rill erosion processes on a constantly saturated slope

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