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The Influence of Soil Erodibility and Saturated Hydraulic Conductivity on Soil Nutrients in the Pingshuo Opencast Coalmine, China

Author

Listed:
  • Mingjie Qian

    (School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China)

  • Wenxiang Zhou

    (School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China)

  • Shufei Wang

    (School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China)

  • Yuting Li

    (School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China)

  • Yingui Cao

    (School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
    Key Lab of Land Consolidation, Ministry of Natural Resources of the People’s Republic of China, Beijing 100035, China)

Abstract

Soil erodibility (K factor) and saturated hydraulic conductivity (Ks) are essential indicators for the estimation of erosion intensity and can potentially influence soil nutrient losses, making them essential parameters for the evaluation of land reclamation quality. In this study, 132 soil samples from 22 soil profiles were collected to measure soil physicochemical properties (e.g., particle size distribution, bulk density and soil nutrient content) and calculate the K factor and Ks of reclaimed soils across the South Dump of the Pingshuo opencast coalmine in the Loess Plateau, China. Geostatistical analysis and the kriging interpolation were employed to quantify the spatial variations in the K factor and Ks in different layers. The results show that the K factor at 0–10 cm is obviously lower than that of other soil layers due to the external input of organic matter, while the Ks tends to decrease along with soil depth. Horizontally, the K factor at 0–10 cm and 50–60 cm shows a decreasing tendency from west to east, while that of other soil layers seems not to show any spatial distribution pattern along latitude or longitude. Meanwhile, the Ks at 0–10 cm presents a striped distribution pattern, while that of other soil layers shows a patchy pattern. On the other hand, the independent-sample t -test and Spearman’s correlation analysis were carried out to determine the effects of soil erodibility on total nitrogen (TN), soil organic matter (SOM), available phosphorus (AP) and potassium (AK). Overall, the K factor is negatively correlated with TN (r = −0.362, p < 0.01) and SOM contents (r = −0.380, p < 0.01), while AP and AK contents are mainly controlled by Ks. This study provides insight on the optimization of reclamation measures and the conservation of soil nutrients in reclaimed land of similar ecosystems.

Suggested Citation

  • Mingjie Qian & Wenxiang Zhou & Shufei Wang & Yuting Li & Yingui Cao, 2022. "The Influence of Soil Erodibility and Saturated Hydraulic Conductivity on Soil Nutrients in the Pingshuo Opencast Coalmine, China," IJERPH, MDPI, vol. 19(8), pages 1-17, April.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:8:p:4762-:d:793972
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    References listed on IDEAS

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    1. Cai, Yaohui & Wu, Pute & Zhang, Lin & Zhu, Delan & Chen, Junying & Wu, ShouJun & Zhao, Xiao, 2017. "Simulation of soil water movement under subsurface irrigation with porous ceramic emitter," Agricultural Water Management, Elsevier, vol. 192(C), pages 244-256.
    2. Zhang, Qingwen & Liu, Dinghui & Cheng, Shanghong & Huang, Xinjun, 2016. "Combined effects of runoff and soil erodibility on available nitrogen losses from sloping farmland affected by agricultural practices," Agricultural Water Management, Elsevier, vol. 176(C), pages 1-8.
    3. Xiaofang Huang & Lirong Lin & Shuwen Ding & Zhengchao Tian & Xinyuan Zhu & Keren Wu & Yuanzhe Zhao, 2022. "Characteristics of Soil Erodibility K Value and Its Influencing Factors in the Changyan Watershed, Southwest Hubei, China," Land, MDPI, vol. 11(1), pages 1-14, January.
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    Cited by:

    1. Shufei Wang & Shengpeng Li & Kai Yang & Yi Feng & Shihan Liu & Jianjun Zhang & Yingui Cao & Zhongke Bai, 2022. "Research on Adaptive Management of the Social–Ecological System of a Typical Mine–Agriculture–Urban Compound Area in North Shanxi, China," IJERPH, MDPI, vol. 19(14), pages 1-20, July.
    2. Mingyong Zhu & Wenming He & Youcun Liu & Zhiyun Chen & Zhicheng Dong & Changbai Zhu & Yankui Chen & Yongzhu Xiong, 2022. "Characteristics of Soil Erodibility in the Yinna Mountainous Area, Eastern Guangdong Province, China," IJERPH, MDPI, vol. 19(23), pages 1-22, November.

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