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Soil Organic Carbon Storage in Urban Green Space and Its Influencing Factors: A Case Study of the 0–20 cm Soil Layer in Guangzhou City

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  • Jifeng Du

    (School of Public Administration, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

  • Mengxiao Yu

    (Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

  • Yanguo Cong

    (College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China)

  • Huanzhe Lv

    (Hunan Planning Institute of Land and Resources, Changsha 410007, China)

  • Zhongyou Yuan

    (School of Public Administration, South China Agricultural University, Guangzhou 510642, China)

Abstract

Urban soils can contribute to organic carbon sequestration. The socioeconomic drivers of soil organic carbon (SOC) in urban areas may differ between regions due to the different land tenure and its derived green space management regimes. Currently, few studies focus on regions where public ownership of land was implemented. We examined the SOC storage and driving factors of urban green spaces in Guangzhou, China at 0–20 cm depth by variance and regression analysis. Our results showed that the total SOC storage did not vary significantly among green space types, with an average value of 2.59 ± 1.31 kg/m 2 . SOC increased with plot age (2–87 years) by 0.025 kg/m 2 /year ( p = 0.026) and plot size (63–2058 m 2 ) by 0.001 kg/m 2 /m 2 ( p = 0.026). Disturbance intensity was negatively correlated to SOC storage. Green space maintenance practices could promote SOC sequestration, but this benefit may be offset by high-intensity disturbances such as trampling, litter and debris removal and fragmentation of green spaces. To increase urban residential SOC storage, except for remediation of compacted soils, it is essential to promote house owners’ initiative in green space management and conservation by improving the current residential green space management regimes.

Suggested Citation

  • Jifeng Du & Mengxiao Yu & Yanguo Cong & Huanzhe Lv & Zhongyou Yuan, 2022. "Soil Organic Carbon Storage in Urban Green Space and Its Influencing Factors: A Case Study of the 0–20 cm Soil Layer in Guangzhou City," Land, MDPI, vol. 11(9), pages 1-19, September.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:9:p:1484-:d:906602
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    References listed on IDEAS

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    Cited by:

    1. Zhenrao Cai & Dan Gao & Xin Xiao & Linguo Zhou & Chaoyang Fang, 2023. "The Flow of Green Exercise, Its Characteristics, Mechanism, and Pattern in Urban Green Space Networks: A Case Study of Nangchang, China," Land, MDPI, vol. 12(3), pages 1-19, March.
    2. Xiaochun Qin & Anchen Ni & Dongxiao Yang & Bing Chen & Shiliang Liu, 2023. "Exploring Applicability of Different Ecological Protection Measures for Soil and Water Loss Control of Highway Slope in the Permafrost Area: A Case Study of Qinghai-Tibet Highway in China," IJERPH, MDPI, vol. 20(6), pages 1-19, March.

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