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Soil Organic Carbon Storage and Stratification in Land Use Types in the Source Area of the Tarim River Basin

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  • Qin Zhang

    (College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Xinjiang Agricultural University, Urumqi 830052, China
    State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

  • Chunfang Yue

    (College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Xinjiang Agricultural University, Urumqi 830052, China)

  • Pujia Yu

    (Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station, School of Geographical Sciences, Southwest University, Chongqing 400715, China
    Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing 400715, China)

  • Hailiang Xu

    (State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    Chinese Academy of Sciences, Beijing 100049, China)

  • Jie Wu

    (College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Xinjiang Agricultural University, Urumqi 830052, China
    State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

  • Fangyu Sheng

    (College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Xinjiang Agricultural University, Urumqi 830052, China
    State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

Abstract

Accurate analysis of soil organic carbon (SOC) under different land uses in ecologically fragile arid zones is essential for effective regulatory measures and improvement of ecological quality. This study selected the ecologically fragile Tarim River source area as an example, aiming to quantitatively assess the SOC content, storage, carbon sequestration potential, and stratification ratio (SR) of different ecological land use types. Soil depths from 0–50 cm were determined and analyzed using the K 2 Cr 2 O 7 -H 2 SO 4 oxidation method, the equivalent soil mass method and mathematical statistics. Forest, shrubland, and grassland ecological land types were included. The results show the following: (1) Both SOC content and storage showed a decrease with increasing soil depth. The total SOC content and storage sequence from high to low were natural forest, grassland, and shrubland. (2) There are variations in the SOC sequestration potential among the different ecological land types and shrubland (40.64 Mg C ha −1 ) > grassland (37.69 Mg C ha −1 ). (3) The SRs of the SOC in the forest were significantly greater than those in the shrubland and grassland. The different ecological land types had significant impacts on SR2, SR3, and SR4. SR2 could serve as a reliable index for assessing the impact of management practices on soil quality. The study area has a high potential for soil carbon sequestration in the future under these ecological conservation and management measures.

Suggested Citation

  • Qin Zhang & Chunfang Yue & Pujia Yu & Hailiang Xu & Jie Wu & Fangyu Sheng, 2024. "Soil Organic Carbon Storage and Stratification in Land Use Types in the Source Area of the Tarim River Basin," Sustainability, MDPI, vol. 16(24), pages 1-13, December.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:24:p:11255-:d:1549856
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    References listed on IDEAS

    as
    1. Li Qian & Mengyuan Shen & Huimin Yi, 2022. "Spatio-Temporal Pattern of Coupling Coordination between Urban Development and Ecological Environment under the “Double Carbon” Goal: A Case Study in Anhui, China," Sustainability, MDPI, vol. 14(18), pages 1-16, September.
    2. Pujia Yu & Xuguang Tang & Shiwei Liu & Wenxin Liu & Aichun Zhang, 2020. "Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China," Land, MDPI, vol. 9(1), pages 1-14, January.
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