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Effects of Wetland Restoration and Conservation Projects on Soil Carbon Sequestration in the Ningxia Basin of the Yellow River in China from 2000 to 2015

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  • Xiaoyan Bu

    (School of Resource and Environmental Sciences, Ningxia University, Yinchuan 750021, China)

  • Dan Cui

    (School of Government, Peking University, Beijing 100871, China)

  • Suocheng Dong

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

  • Wenbao Mi

    (School of Resource and Environmental Sciences, Ningxia University, Yinchuan 750021, China)

  • Yu Li

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

  • Zhigang Li

    (School of Resource and Environmental Sciences, Ningxia University, Yinchuan 750021, China)

  • Yaliang Feng

    (School of Resource and Environmental Sciences, Ningxia University, Yinchuan 750021, China)

Abstract

The long-term use of wetlands stresses wetland ecosystems and leads to degradation and C loss. This study explored an optimal remote sensing-multivariate linear regression model (RS-MLRM) for estimating wetland soil organic carbon (SOC) by using a combination of the measured SOC and above ground biomass (AGB) from 273 samples, textural features, spectral information, and a vegetation index calculated from Landsat-8 images using the Ningxia Basin of the Yellow River as the study area. To derive the optimal predictor model for SOC, these variables were regressed against the measured SOC. These were used to predict SOC and evaluate the contribution of wetland restoration and conservation projects to soil carbon sequestration and sinks on the Ningxia Basin of the Yellow River in early (2000 and 2005), intermediate (2010), and recent (2015) years. The results show that from 2000 to 2015, the project-induced contribution to C sequestration was 20.49 TC, with an annual sink of 1.37 TC. This accounted for 54.06% of the total wetland ecosystem C sequestration on the Ningxia Basin of the Yellow River. Moreover, there was a significant success of restoration and conservation projects regarding C sequestration. These restoration and conservation projects have substantially contributed to CO 2 mitigation in the arid area.

Suggested Citation

  • Xiaoyan Bu & Dan Cui & Suocheng Dong & Wenbao Mi & Yu Li & Zhigang Li & Yaliang Feng, 2020. "Effects of Wetland Restoration and Conservation Projects on Soil Carbon Sequestration in the Ningxia Basin of the Yellow River in China from 2000 to 2015," Sustainability, MDPI, vol. 12(24), pages 1-25, December.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:24:p:10284-:d:459170
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    1. Elizabeth Gibney, 2018. "What to expect in 2018: science in the new year," Nature, Nature, vol. 553(7686), pages 12-13, January.
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    Cited by:

    1. Tianlin Zhai & Jing Wang & Ying Fang & Longyang Huang & Jingjing Liu & Chenchen Zhao, 2021. "Integrating Ecosystem Services Supply, Demand and Flow in Ecological Compensation: A Case Study of Carbon Sequestration Services," Sustainability, MDPI, vol. 13(4), pages 1-19, February.

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