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Spatial-Temporal Variability of Soil Organic Carbon Density and Its Related Factors in Fengqiu County of Yellow River Basin, China: A Model and GIS Technique Approach

Author

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  • Zhanhui Zhao

    (School of Surveying and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467036, China
    These authors contributed equally to this work.)

  • Congzhi Zhang

    (State Experimental Station of Agro-Ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    These authors contributed equally to this work.)

  • Qiang Yang

    (State Experimental Station of Agro-Ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China)

  • Songfeng Gao

    (School of Surveying and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467036, China)

  • Chunyang Lu

    (School of Surveying and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467036, China)

  • Jiabao Zhang

    (State Experimental Station of Agro-Ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China)

Abstract

The accurate estimation of the soil organic carbon (SOC) sequestration rate is very important for studying farmland soil fertility and environmental effects. In this research, a typical fluvor-aquic soil area, Fengqiu county, located in the Yellow River basin of the Huang-Huai-Hai Plain of China, was chosen as a study area. The physicochemical properties of 70 soil samples collected from the surface layer (at a depth of 0–20 cm) in 2011 were analyzed, and related data about the sampling sites were also collected from the Second State Soil Survey of China (SSSSC), conducted in 1981. The results revealed that the SOC density (SOCD) in Fengqiu county increased greatly on a spatio-temporal scale. The average SOCD increased from 15.66 to 26.09 Mg ha −1 , and the SOCD sequestration rate was more than 0.20 Mg C ha −1 year −1 in most regions. Few areas showed lost carbon in the past 30 years (1981–2011). In addition, the study suggested that all the areas present strong carbon sequestration potential in the coming decades from 2011, and the carbon sequestration potential was mainly between 32–40 Mg ha −1 . Finally, the SOCD sequestration rate was not only affected by natural factors, such as soil type and pH, but also positively correlated with artificial soil management measures, such as fertilization and straw returning. Therefore, we concluded that the farmland in Fengqiu county showed significant carbon sequestration characteristics in the past 30 years (1981–2011). Considering that soil has a great potential for carbon sequestration in the future, the trend of carbon sequestration in farmland soil might continue for a period of time. Furthermore, the results of this study emphasized that strengthening soil scientific management may play a positive role in improving soil carbon sequestration.

Suggested Citation

  • Zhanhui Zhao & Congzhi Zhang & Qiang Yang & Songfeng Gao & Chunyang Lu & Jiabao Zhang, 2022. "Spatial-Temporal Variability of Soil Organic Carbon Density and Its Related Factors in Fengqiu County of Yellow River Basin, China: A Model and GIS Technique Approach," Agriculture, MDPI, vol. 12(8), pages 1-11, July.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1073-:d:868757
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    References listed on IDEAS

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    1. Shen, Zhiyang & Wang, Songkai & Boussemart, Jean-Philippe & Hao, Yu, 2022. "Digital transition and green growth in Chinese agriculture," Technological Forecasting and Social Change, Elsevier, vol. 181(C).
    2. Shilong Piao & Jingyun Fang & Philippe Ciais & Philippe Peylin & Yao Huang & Stephen Sitch & Tao Wang, 2009. "The carbon balance of terrestrial ecosystems in China," Nature, Nature, vol. 458(7241), pages 1009-1013, April.
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    1. Xiaogeng Niu & Meiyu Liu & Zhenxing Tian & Anguo Chen, 2022. "Research on the Impact of Agricultural Financial Support on Agricultural Carbon Compensation Rate," Sustainability, MDPI, vol. 14(21), pages 1-15, October.

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