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Inventory of China’s Net Biome Productivity since the 21st Century

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  • Chaochao Du

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Xiaoyong Bai

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
    CAS Center for Excellence in Quaternary Science and Global Change, Xi’an 710061, China)

  • Yangbing Li

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China)

  • Qiu Tan

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China)

  • Cuiwei Zhao

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China)

  • Guangjie Luo

    (Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Guizhou Normal College, Guiyang 550018, China)

  • Luhua Wu

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Fei Chen

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
    College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China)

  • Chaojun Li

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Chen Ran

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Xuling Luo

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Huipeng Xi

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Huan Chen

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Sirui Zhang

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Min Liu

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Suhua Gong

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Lian Xiong

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Fengjiao Song

    (State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

  • Biqin Xiao

    (School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
    State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China)

Abstract

Net biome productivity (NBP), which takes into account abiotic respiration and metabolic processes such as fire, pests, and harvesting of agricultural and forestry products, may be more scientific than net ecosystem productivity (NEP) in measuring ecosystem carbon sink levels. As one of the largest countries in global carbon emissions, in China, however, the spatial pattern and evolution of its NBP are still unclear. To this end, we estimated the magnitude of NBP in 31 Chinese provinces (except Hong Kong, Macau, and Taiwan) from 2000 to 2018, and clarified its temporal and spatial evolution. The results show that: (1) the total amount of NBP in China was about 0.21 Pg C/yr 1 . Among them, Yunnan Province had the highest NBP (0.09 Pg C/yr 1 ), accounting for about 43% of China’s total. (2) NBP increased from a rate of 0.19 Tg C/yr 1 during the study period. (3) At present, NBP in China’s terrestrial ecosystems is mainly distributed in southwest and south China, while northwest and central China are weak carbon sinks or carbon sources. (4) The relative contribution rates of carbon emission fluxes due to emissions from anthropogenic disturbances (harvest of agricultural and forestry products) and natural disturbances (fires, pests, etc.) were 70% and 9.87%, respectively. This study emphasizes the importance of using NBP to re-estimate the net carbon sink of China’s terrestrial ecosystem, which is beneficial to providing data support for the realization of China’s carbon neutrality goal and global carbon cycle research.

Suggested Citation

  • Chaochao Du & Xiaoyong Bai & Yangbing Li & Qiu Tan & Cuiwei Zhao & Guangjie Luo & Luhua Wu & Fei Chen & Chaojun Li & Chen Ran & Xuling Luo & Huipeng Xi & Huan Chen & Sirui Zhang & Min Liu & Suhua Gong, 2022. "Inventory of China’s Net Biome Productivity since the 21st Century," Land, MDPI, vol. 11(8), pages 1-16, August.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:8:p:1244-:d:880626
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    References listed on IDEAS

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