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Analysis of Net Primary Productivity of Retired Farmlands in the Grain-for-Green Project in China from 2011 to 2020

Author

Listed:
  • Yuanming Xie

    (College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
    These authors contributed equally to this work.)

  • Zemeng Ma

    (College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
    These authors contributed equally to this work.)

  • Mingjie Fang

    (College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China)

  • Weiguo Liu

    (Center for Ecological Forecasting and Global Change, College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
    Qinling National Forest Ecosystem Research Station, Huoditang, Ningshan 711600, China)

  • Feiyan Yu

    (Center for Ecological Forecasting and Global Change, College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China)

  • Jiajing Tian

    (Center for Ecological Forecasting and Global Change, College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China)

  • Shuoxin Zhang

    (College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
    Qinling National Forest Ecosystem Research Station, Huoditang, Ningshan 711600, China)

  • Yan Yan

    (College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
    Qinling National Forest Ecosystem Research Station, Huoditang, Ningshan 711600, China)

Abstract

The Grain-for-Green Project (GFGP), one of the largest ecological restoration projects in China, has made a significant contribution to carbon neutrality. However, the quantitative contribution to climate change and the driving forces of the carbon sequestration of retired farmlands remains unclear. To analyze the carbon dynamics of the retired farmlands and their driving forces, GlobeLand30 databases were used to identify retired farmlands from 2001 to 2020; in addition, net primary productivity (NPP) of the identified lands was estimated with the Carnegie–Ames–Stanford Approach (CASA). Results showed that 131,298 km 2 of farmlands were retired from 2001 to 2010 (L01–10), and 130,225 km 2 were retired from 2011 to 2020 (L11–20). The largest areas of retired farmlands were South Central China (24%) in L01–10 and Northwest China (22%) in L11–20. The annual NPP increment of retired farmlands was the highest and most significant in Southwest China (26,455–28,783 GgC·year −1 for retired farmlands in L01–10 and 21,320–23,303 GgC·year −1 in L11–20). In this study, NPP had significantly positive correlations with temperature and precipitation as well as significant constraint relationships with rural population density and animal husbandry output value. The findings could provide suggestions for the further implementation of the GFGP and other restoration projects.

Suggested Citation

  • Yuanming Xie & Zemeng Ma & Mingjie Fang & Weiguo Liu & Feiyan Yu & Jiajing Tian & Shuoxin Zhang & Yan Yan, 2023. "Analysis of Net Primary Productivity of Retired Farmlands in the Grain-for-Green Project in China from 2011 to 2020," Land, MDPI, vol. 12(5), pages 1-16, May.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:5:p:1078-:d:1148751
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    References listed on IDEAS

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    1. Liu, Zhengjia & Wang, Jieyong & Wang, Xiaoyue & Wang, Yongsheng, 2020. "Understanding the impacts of ‘Grain for Green’ land management practice on land greening dynamics over the Loess Plateau of China," Land Use Policy, Elsevier, vol. 99(C).
    2. Christopher Potter & Steven Klooster & Vanessa Genovese, 2012. "Net primary production of terrestrial ecosystems from 2000 to 2009," Climatic Change, Springer, vol. 115(2), pages 365-378, November.
    3. Chen, Xin & Jiang, Li & Zhang, Guoliang & Meng, Lijun & Pan, Zhihua & Lun, Fei & An, Pingli, 2021. "Green-depressing cropping system: A referential land use practice for fallow to ensure a harmonious human-land relationship in the farming-pastoral ecotone of northern China," Land Use Policy, Elsevier, vol. 100(C).
    4. Hendricks, Nathan P. & Er, Emrah, 2018. "Changes in cropland area in the United States and the role of CRP," Food Policy, Elsevier, vol. 75(C), pages 15-23.
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