This page has only limited features, please log in for full access.
Approximately 90% of the sediment yield of the Yellow River is derived from the Loess Plateau. In this paper, the Loess Plateau was used as the research object. To investigate the influence of economic and social development on reducing sediment load of the Yellow River, a mathematical method was employed with hydrological and sediment data from three hydrological stations (Toudaoguai and Sanmenxia at the Yellow River, and Ganguyi at the Yan River) as well as per capita GDP data from the Yan River basin. The results showed that the reduction in runoff in the reaches between the Toudaoguai and Sanmenxia stations accounted for 39.3% of the decrease in the sediment load of the Yellow River, and the other 60.7% of the decrease may have resulted from economic and social development. Using the Yan River basin as an example, there was an inverse relationship between per capita GDP and sediment delivery during the period from 1984 to 2018. Grey relational analysis revealed a relatively high relation between the sediment load of the Yan River and the number of rural laborers transferred from the area, the afforestation area, and the tertiary industry value of Yan’an city. Thus, economic development and social transformation are highly related to sediment delivery in the basin, which may result in a decrease in sediment delivery to some extent.
Guangming Tan; Shasha Han; Yuecong Yu; Rui Hu; Yiwei Lv; Caiwen Shu. Impact of Social and Economic Development on Sediment Load of the Yellow River. Sustainability 2021, 13, 7976 .
AMA StyleGuangming Tan, Shasha Han, Yuecong Yu, Rui Hu, Yiwei Lv, Caiwen Shu. Impact of Social and Economic Development on Sediment Load of the Yellow River. Sustainability. 2021; 13 (14):7976.
Chicago/Turabian StyleGuangming Tan; Shasha Han; Yuecong Yu; Rui Hu; Yiwei Lv; Caiwen Shu. 2021. "Impact of Social and Economic Development on Sediment Load of the Yellow River." Sustainability 13, no. 14: 7976.
Using experimental data of near-bed suspended sediment concentrations at five typical hydrometric stations of the Three Gorges Reservoir at the early reserving stage, the differences were investigated between the common method and improved method during flood seasons and non-flood seasons. The impact of taking measurements below 0.2 times the water depth on the results was discussed. The results show that the average discharges and velocities at each station calculated by the common method were slightly larger than those calculated by the improved method. Regarding the suspended sediment concentration at each station, the errors in the reservoir and downstream channels in dynamic equilibrium state were small, and the largest errors occurred where the river bed was strongly scoured in the downstream reach below the large dam. There was no significant relationship between water discharge and flow velocity, and the missed measurement phenomenon also occurred. The sediment discharge error was affected by the suspended sediment concentration, implying that errors usually occurred in channels with serious erosion during flood seasons. The correction coefficients (R2) of sediment discharge at each station were given during the experiment, which showed that the sediment discharges at the hydrometric stations where a large amount of sediment transport occurred near the river bottom, needed to be modified. Furthermore, the test methods proposed in this study were applied to calculate the sediment discharges of three rivers, and the results indicate that this method can narrow the gap between bathymetric comparisons and sediment load measurements.
Caiwen Shu; Guangming Tan; Yiwei Lv; Quanxi Xu. Field methods of a near-bed suspended sediment experiment in the Yangtze River, China. Arabian Journal of Geosciences 2020, 13, 1 -9.
AMA StyleCaiwen Shu, Guangming Tan, Yiwei Lv, Quanxi Xu. Field methods of a near-bed suspended sediment experiment in the Yangtze River, China. Arabian Journal of Geosciences. 2020; 13 (21):1-9.
Chicago/Turabian StyleCaiwen Shu; Guangming Tan; Yiwei Lv; Quanxi Xu. 2020. "Field methods of a near-bed suspended sediment experiment in the Yangtze River, China." Arabian Journal of Geosciences 13, no. 21: 1-9.