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Geochemical Characteristics of Rare Earth Elements in Soils from Puding Karst Critical Zone Observatory, Southwest China

Author

Listed:
  • Qian Zhang

    (School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
    Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

  • Guilin Han

    (School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China)

  • Man Liu

    (School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China)

  • Lingqing Wang

    (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

Abstract

Soil samples from eight soil profiles under different land-use types were collected at the Puding Karst Critical Zone Observatory, Southwest China, to investigate the distribution, fractionation, and controlling factors of rare earth elements (REEs). The total REEs contents in topsoil ranged from 149.97 to 247.74 mg kg −1 , the contents in most topsoil were higher than local soil background value (202.60 mg kg −1 ), and the highest content was observed in topsoil under cropland. The REEs contents in surface soils from lower slopes sites were higher than that of middle and upper slope sites, and the highest contents were observed in cropland. The PAAS-normalized REEs pattern in soils showed MREEs significantly enriched relative to LREEs and HREEs, and HREEs were enriched relative to LREEs. The results showed that clay content, pH, soil organic carbon, total phosphorus, and Fe content were the main factors influencing the distribution of REEs in karst soils, and soil organic carbon (SOC), Fe content showed better linear relationship with REEs.

Suggested Citation

  • Qian Zhang & Guilin Han & Man Liu & Lingqing Wang, 2019. "Geochemical Characteristics of Rare Earth Elements in Soils from Puding Karst Critical Zone Observatory, Southwest China," Sustainability, MDPI, vol. 11(18), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:18:p:4963-:d:266277
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    References listed on IDEAS

    as
    1. Man Liu & Guilin Han & Qian Zhang & Zhaoliang Song, 2019. "Variations and Indications of δ 13 C SOC and δ 15 N SON in Soil Profiles in Karst Critical Zone Observatory (CZO), Southwest China," Sustainability, MDPI, vol. 11(7), pages 1-16, April.
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    Cited by:

    1. Man Liu & Guilin Han & Qian Zhang, 2019. "Effects of Soil Aggregate Stability on Soil Organic Carbon and Nitrogen under Land Use Change in an Erodible Region in Southwest China," IJERPH, MDPI, vol. 16(20), pages 1-14, October.
    2. Ruiyin Han & Zhifang Xu, 2021. "Geochemical Behaviors of Rare Earth Elements (REEs) in Karst Soils under Different Land-Use Types: A Case in Yinjiang Karst Catchment, Southwest China," IJERPH, MDPI, vol. 18(2), pages 1-18, January.
    3. Mengli Xie & He Chang & Xiaohua Zhou & Jieyong Zhu & Zhong Chen & Tianfu Yang & Kun Long & Yinxian Song, 2023. "Geochemical Characteristics and Factors of Transfer and Accumulation of Rare Earth Elements in Rock-Soil-Tea of the Mengku Tea Region in Yunnan Province, China," Sustainability, MDPI, vol. 15(6), pages 1-17, March.

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