scholarly journals Assessing the Impact of Terraces and Vegetation on Runoff and Sediment Routing Using the Time-Area Method in the Chinese Loess Plateau

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 803 ◽  
Author(s):  
Juan Bai ◽  
Shengtian Yang ◽  
Yichi Zhang ◽  
Xiaoyan Liu ◽  
Yabing Guan
Keyword(s):  
Sediment Yield ◽  
Reduction Rate ◽  
Chinese Loess Plateau ◽  
Area Method ◽  
Chinese Loess ◽  
Sediment Routing ◽  
Water And Sediment ◽  
Sediment Reduction ◽  
The Impact ◽  
The Chinese Loess Plateau

Terracing and vegetation are an effective practice for soil and water conservation on sloped terrain. They can significantly reduce the sediment yield from the surface area, as well as intercept the sediment yield from upstream. However, most hydrological models mainly simulate the effect of the terraces and vegetation on water and sediment reduction from themselves, without considering their roles in the routing process, and thus likely underestimate their runoff and sediment reduction effect. This study added the impact of terraces and vegetation practice on water and sediment routing using the time-area method. The outflow in each travel time zone was revised in each time step by extracting the watershed of the terrace units and the vegetation units and calculating the water or sediment stored by the terraces or held by the vegetation. The revised time-area method was integrated into the Land change Model-Modified Universal Soil Loss Equation (LCM-MUSLE) model. Pianguanhe Basin, in the Chinese Loess Plateau, was chosen as the study area and eight storms in the 1980s and 2010s were selected to calibrate and verify the original LCM-MUSLE model and its revised version. The results showed that the original model was not applicable in more recent years, since the surface was changed significantly as a result of revegetation and slope terracing, while the accuracy improved significantly when using the revised version. For the three events in the 2010s, the average runoff reduction rate in routing process was 51.02% for vegetation, 26.65% for terraces, and 71.86% for both terraces and vegetation. The average sediment reduction rate in routing process was 32.22% for vegetation, 24.52% for terraces, and 53.85% for both terraces and vegetation. This study provides a generalized method to quantitatively assess the impact of terraces and vegetation practice on runoff and sediment reduction at the catchment scale.

Evidence and Causes of Spatiotemporal Changes in Runoff and Sediment Yield on the Chinese Loess Plateau

2016 ◽  
Vol 28 (2) ◽  
pp. 579-590 ◽  
Author(s):  
Guangju Zhao ◽  
Xingmin Mu ◽  
Juying Jiao ◽  
Zhengfeng An ◽  
Andreas Klik ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Sediment Yield ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
Spatiotemporal Changes ◽  
Runoff And Sediment Yield ◽  
The Chinese Loess Plateau

scholarly journals Influence of landfill and land use scenario on runoff, evapotranspiration, and sediment yield over the Chinese Loess Plateau

2021 ◽  
Vol 121 ◽  
pp. 107208
Author(s):  
Aidi Huo ◽  
Lei Yang ◽  
Pingping Luo ◽  
Yuxiang Cheng ◽  
Jianbing Peng ◽  
...  
Keyword(s):  
Land Use ◽  
Loess Plateau ◽  
Sediment Yield ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
Land Use Scenario ◽  
The Chinese Loess Plateau

scholarly journals Impacts of land disturbance and restoration on runoff production and sediment yield in the Chinese Loess Plateau

2016 ◽  
Vol 9 (1) ◽  
pp. 76-86 ◽  
Author(s):  
Ning Ai ◽  
Tianxing Wei ◽  
Qingke Zhu ◽  
Fangfang Qiang ◽  
Huan Ma ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Sediment Yield ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
Land Disturbance ◽  
Runoff Production ◽  
The Chinese Loess Plateau

scholarly journals Changes in soil water holding capacity and water availability following vegetation restoration on the Chinese Loess Plateau

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong-wang Zhang ◽  
Kai-bo Wang ◽  
Jun Wang ◽  
Changhai Liu ◽  
Zhou-ping Shangguan
Keyword(s):  
Land Use ◽  
Soil Water ◽  
Loess Plateau ◽  
Soil Layer ◽  
Soil Physical Properties ◽  
Chinese Loess Plateau ◽  
Land Use Type ◽  
Chinese Loess ◽  
Water Holding ◽  
The Chinese Loess Plateau

AbstractChanges in land use type can lead to variations in soil water characteristics. The objective of this study was to identify the responses of soil water holding capacity (SWHC) and soil water availability (SWA) to land use type (grassland, shrubland and forestland). The soil water characteristic curve describes the relationship between gravimetric water content and soil suction. We measured the soil water characteristic parameters representing SWHC and SWA, which we derived from soil water characteristic curves, in the 0–50 cm soil layer at sites representing three land use types in the Ziwuling forest region, located in the central part of the Loess Plateau, China. Our results showed that the SWHC was higher at the woodland site than the grassland and shrubland, and there was no significant difference between the latter two sites, the trend of SWA was similar to the SWHC. From grassland to woodland, the soil physical properties in the 0–50 cm soil layer partially improved, BD was significantly higher at the grassland site than at the shrubland and woodland sites, the clay and silt contents decreased significantly from grassland to shrubland to woodland and sand content showed the opposite pattern, the soil porosity was higher in the shrubland and woodland than that in the grassland, the soil physical properties across the 0–50 cm soil layer improved. Soil texture, porosity and bulk density were the key factors affecting SWHC and SWA. The results of this study provide insight into the effects of vegetation restoration on local hydrological resources and can inform soil water management and land use planning on the Chinese Loess Plateau.

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