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Construction and Application of Ecological Remediation Technology for Sandy Soils in Northwest China

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Listed:
  • Jing Jiang

    (School of Management, Gansu Agricultural University, Lanzhou 730070, China)

  • Qian Wang

    (School of Management, Gansu Agricultural University, Lanzhou 730070, China)

  • Jinmei Zhao

    (College of Forestry and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China)

  • Jun Zhang

    (College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China)

  • Bo Dong

    (College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China
    Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China)

  • Xin Huang

    (School of Management, Gansu Agricultural University, Lanzhou 730070, China)

Abstract

This study investigated the impact of three ecological restoration methods: PRS, OLRS, and NRM, on the soil quality and ecological environment of the cold plateau area in northwest Sichuan, China. Over a period of 3 years, these restoration modes were applied, and their effects on soil enzyme activity, organic carbon, and nitrogen were critically analyzed. The results demonstrated that PRS was the most effective restoration method, enhancing soil water content, organic activity, and enzyme content the most, followed by OLRS and NRM, respectively. In the 0~60 cm soil layer, each restoration model was able to improve the vegetation characteristics, and the modification effects were PRS > ORRS > NRM > UMD in descending order. After the restoration, the summer surface temperature decreased from 41.3 °C to 23.1 °C. The average moisture content of the soil increased from 3.11% to 5.86%. The average moisture content of the soil increased from 3.11% to 5.86%, and the bulk density decreased from 1.47 g/m 3 to 1.40 g/m 3 , resulting in a more rational soil structure. This research offers invaluable insights into the nutrient restoration mechanism of sandy lands, emphasizing the significant role of appropriate vegetation restoration measures in ecological restoration. The findings further suggest the potential application of the PRS model for optimal soil repair effects in similar ecological settings.

Suggested Citation

  • Jing Jiang & Qian Wang & Jinmei Zhao & Jun Zhang & Bo Dong & Xin Huang, 2023. "Construction and Application of Ecological Remediation Technology for Sandy Soils in Northwest China," Sustainability, MDPI, vol. 15(20), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:20:p:14730-:d:1257471
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    References listed on IDEAS

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    1. Xuan Guo & Yunfeng Hu & Yunzhi Zhang & Lin Zhen, 2022. "Using 137 Cs and 210 Pb ex to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China," Sustainability, MDPI, vol. 14(19), pages 1-18, September.
    2. ZHAO,Guoping & WANG,Haiyan & LI,Junbao & GUO,Hui, 2018. "Study on Spatial Variation of Soil Moisture in Coal Mining Subsidence Area in Mu Us Sandy Land," Asian Agricultural Research, USA-China Science and Culture Media Corporation, vol. 10(03), March.
    3. Xu, Duanyang & Li, Dajing, 2020. "Variation of wind erosion and its response to ecological programs in northern China in the period 1981–2015," Land Use Policy, Elsevier, vol. 99(C).
    4. He, Juan & Shi, Xueyi & Fu, Yangjun & Yuan, Ye, 2020. "Evaluation and simulation of the impact of land use change on ecosystem services trade-offs in ecological restoration areas, China," Land Use Policy, Elsevier, vol. 99(C).
    5. Xiaoliang Shi & Xinyue Zhang & Shuaiyu Lu & Tielong Wang & Jiayi Zhang & Yuanpeng Liang & Jifeng Deng, 2022. "Dryland Ecological Restoration Research Dynamics: A Bibliometric Analysis Based on Web of Science Data," Sustainability, MDPI, vol. 14(16), pages 1-20, August.
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