Numerically Simulated Water Movement in Reclaimed Multi-Layered Soil Backfilled with Yellow River Sediments

Abstract The Yellow River interlayer filling reclamation technology can effectively improve the quality of destroyed cultivated land in the condition of limited soil resources. However, it is a conundrum to choose the appropriate sandwich strategy according to the amount of soil that can be backfilled. This study using the Hydrus-1D model to simulate water movement in reclaimed multiple-layered soils were to understand the mechanism of interlayer, and predict the optimal profile for reclaimed with Yellow River sediments. Simulations were performed on 18 soil profiles that were divided into a control check (CK) and two general scenarios that the total thickness of soil were 50 and 60 cm. Treatments in both scenarios exhibited interaction of different positions and thicknesses of soil interlayer. Results showed that removing part of the subsoil overlying the sediment placed it between sediment layers will improve the infiltration character of the conventional reconstructed soil profiles (T50-0 and T60-0). Moreover, changing the thickness of the interlayers affected infiltration character and soil water-holding capacity more than changes in the position of the layers for same total thickness of native soil. The optimal reconstructed soil profiles for scenarios 1 and 2 were T50-6 (interlayer thickness of 20 cm and located at a position of 30 cm) and T60-9 (interlayer thickness of 30 cm and located at a position of 30 cm), which could have a better infiltration character that were more closed to the native farmland.

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Impact of interlayer on moisture characteristics of reclaimed soil backfilled with Yellow River sediments

International Journal of Agricultural and Biological Engineering ◽

10.25165/j.ijabe.20201301.5418 ◽

2020 ◽

Vol 13 (1) ◽

pp. 153-159

Author(s):

Xiaotong Wang ◽

◽

Zhenqi Hu ◽

Yusheng Liang ◽

Keyword(s):

Yellow River ◽

River Sediments ◽

Reclaimed Soil ◽

Yellow River Sediments

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Mineralogy and geochemistry of modern Yellow River sediments: Implications for weathering and provenance

Chemical Geology ◽

10.1016/j.chemgeo.2018.04.010 ◽

2018 ◽

Vol 488 ◽

pp. 76-86 ◽

Cited By ~ 19

Author(s):

Hongli Pang ◽

Baotian Pan ◽

Eduardo Garzanti ◽

Hongshan Gao ◽

Xin Zhao ◽

...

Keyword(s):

Yellow River ◽

River Sediments ◽

Yellow River Sediments

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Heavy Mineral Variability in the Yellow River Sediments as Determined by the Multiple-Window Strategy

Minerals ◽

10.3390/min9020085 ◽

2019 ◽

Vol 9 (2) ◽

pp. 85 ◽

Cited By ~ 3

Author(s):

Bingfu Jin ◽

Mengyao Wang ◽

Wei Yue ◽

Lina Zhang ◽

Yanjun Wang

Keyword(s):

Particle Size ◽

Grain Size ◽

Yellow River ◽

River Sediments ◽

Size Fraction ◽

Heavy Mineral ◽

The Yellow River ◽

Yellow River Sediment ◽

Yellow River Sediments ◽

End Members

In this study, heavy mineral analysis was carried out in different size fractions of the Yellow River sediment to extract its end-members. It shows that heavy mineral contents, species, and compositions vary in different grain sizes. Distribution curve of heavy mineral concentration (HMC) and particle size frequency curve are in normal distribution. In most samples, the size fraction of 4.5–5.0 Φ contains the maximum HMC (18% on average). Heavy mineral assemblages of the Yellow River are featured by amphibole + epidote + limonite + garnet. Amphibole content is high in coarse fraction of >3.0 Φ and reaches its peak value in 3.5–4.5 Φ. Epidote is rich in a size fraction of >3.5 Φ, and increase as the particle size becomes fine. Micas content is high in coarse subsamples of <3.0 Φ, but almost absent in fine grains of >4.0 Φ. Metallic minerals (magnetite, ilmenite, hematite, and limonite) increase as the sediment particle size become fine, and reach the peak in silt (>4.0 Φ). Other minerals such as zircon, rutile, tourmaline, garnet, and apatite account for about 15%, and mainly concentrate in fine sediment. Further analysis reveals that similarity value between the most abundant grain size group and wide window grain size group is high (0.978 on average). The grain size of 4.0–5.0 Φ ± 0.5 Φ is suitable to carry out detrital mineral analysis in the Yellow River sediments. Our study helps to eliminate cognitive bias due to narrow grain size strategy, and to provide heavy mineral end-members of the Yellow River sediment for provenance discrimination in the marginal seas of East China.

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Soil Quality Change after Reclaiming Subsidence Land with Yellow River Sediments

Sustainability ◽

10.3390/su10114310 ◽

2018 ◽

Vol 10 (11) ◽

pp. 4310 ◽

Cited By ~ 4

Author(s):

Linghua Duo ◽

Zhenqi Hu

Keyword(s):

Crop Yields ◽

Yellow River ◽

Underground Mining ◽

River Sediments ◽

Sustainable Utilization ◽

Cultivated Land ◽

Quality Change ◽

Weakly Alkaline ◽

Yellow River Sediments

With continuous population growth and decreasing cultivated land area, China’s food security is greatly threatened. Additionally, coal mining in China is primarily underground mining, which causes land subsidence and destroys existing cultivated land. This effect aggravates the contradiction between a growing population and a shrinking area of cultivated land. The purpose of this study was to introduce a method of filling reclamation with Yellow River sediments to restore farmland and realize the sustainable utilization of cultivated land. The properties of the soil and crop yields in reclaimed farmland were assessed. This study examined farmland reclaimed with Yellow River sediments at an experimental site located in Jining City, Shandong Province, China. Filling reclamation procedures with Yellow River sediments were applied. The reclaimed farmland (RF) and unaltered farmland (CK) were continuously monitored for three years, and the soil was sampled six times. A total of 180 soil samples were collected from RF and CK. The soil properties were measured at three depths: 0–20 cm, 20–50 cm, and 50–80 cm. Crop yields were monitored regularly. The results indicate that filling reclamation with Yellow River sediments is an effective method for restoring farmland. The RF and CK soils were weakly alkaline, non-saline soils. The RF soil was suitable for the growth of local crops. With an increasing number of farming years, both the quality of cultivated land and crop yields have increased. Therefore, filling reclamation with Yellow River sediments is an effective way to realize the sustainable utilization of cultivated land.

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