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Carbon sequestration of mature black locust stands on the Loess Plateau, China

Author

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  • J.J. Wang

    (College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • C.X. Hu

    (College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • J. Bai

    (College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • C.M. Gong

    (College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, P.R. China)

Abstract

In Northwestern China, the carbon fixing capacity of black locust (Robinia pseudoacacia) has been questioned because of its slow growth following the return of unproductive farmland to forest. To explore the effects of stand age on the carbon sequestration potential of R. pseudoacacia in a semi-arid, ecologically fragile area, parameters related to carbon fixation were investigated in plots of three stand ages (5, 10, and 25 years). Each plot was divided into four subsystems: R. pseudoacacia, understory vegetation, litter, and soil, and the carbon stored capacity of each subsystem was estimated. The organic carbon density of R. pseudoacacia, understory vegetation, and litter ranged from 3.4-16.8% and increased gradually with increasing stand age. Soil organic carbon increased with increasing stand age and accounted for 83.2-96.6% of the total carbon stored. Soil CaCO3 content also increased with increasing soil depth and stand age. Because total plant and soil carbon storage increased with increasing age of R. pseudoacacia stands, the 25-year-old R. pseudoacacia community had the highest carbon fixation capacity, which was substantial even in this arid region.

Suggested Citation

  • J.J. Wang & C.X. Hu & J. Bai & C.M. Gong, 2015. "Carbon sequestration of mature black locust stands on the Loess Plateau, China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(3), pages 116-121.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:3:id:931-2014-pse
    DOI: 10.17221/931/2014-PSE
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    References listed on IDEAS

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    1. F. Wang & Y.A. Tong & J.S. Zhang & P.C. Gao & J.N. Coffie, 2013. "Effects of various organic materials on soil aggregate stability and soil microbiological properties on the Loess Plateau of China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(4), pages 162-168.
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    More about this item

    Keywords

    atmospheric CO2; afforested; biomass; plant organic carbon;
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