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Coupled variations of soil temperature and moisture in reclaimed fields filled with coal gangue of different grain size distributions

  • Soils, Sec 5 • Soil and Landscape Ecology • Research Article
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Abstract

Purpose

This study was aimed at investigating the effects of different reclamation modes on coupled variations of soil temperature and moisture.

Materials and methods

An experimental field was established, which consists of three plots (plots I, II, and III) filled with coal gangue of different grain size distributions (coarse grain, middle-coarse grain, and fine grain) and covered with the same thickness (50 cm) of soil. Temperature and moisture at four depths (10, 25, 50, and 65 cm) in three plots were monitored and analyzed.

Results and discussion

The study reveals that both in winter and summer soil temperature at each depth was highest in plot III and lowest in plot I. Although plot III performed better in heat preservation in winter, soil temperature of which was too high in summer for crop growth. The results also indicate that annual average of soil moisture at the depth of 10 cm and 25 cm was highest in plot II, namely plot II performed best in water holding in the tillage layer for the whole year.

Conclusions

Soil temperature and moisture in plot II were more conducive to crop growth on the whole, and it is recommended to adopt the reclamation mode of plot II for land reclamation in coal mining subsidence areas with high ground water table.

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Acknowledgments

The authors gratefully acknowledge Professor Yan Jia-ping for providing comments on an early draft of the manuscript. The authors would like to thank Bao Shi-shui and She Bao for their advice on figures drawing. The authors would also like to thank Niu Ya-chao, Li Ke, Wang Wei, Lu Ke-dong, Ye Wei, Liu Yue, and Wei Ren for their help in field monitoring.

Funding

This work was supported by the National Natural Science Foundation of China (41472323), Department of Science and Technology of Anhui Province (201904b11020015), and Huaibei Mining (Group) Co., Ltd.

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Correspondence to Liang-ji Xu.

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The authors declare that they have no conflict of interest.

Research involving human participants and/or animals

This article does not contain any studies with human participants or animals performed by any of the authors.

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Informed consent was obtained from all individual participants included in the study.

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Responsible editor: Lu Zhang

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Zhang, K., Xu, Lj., Huang, Gd. et al. Coupled variations of soil temperature and moisture in reclaimed fields filled with coal gangue of different grain size distributions. J Soils Sediments 20, 2248–2259 (2020). https://doi.org/10.1007/s11368-020-02579-2

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  • DOI: https://doi.org/10.1007/s11368-020-02579-2

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