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Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements

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Listed:
  • Xiaolin Shen

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Lili Wang

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Qichen Yang

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Weiming Xiu

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Gang Li

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Jianning Zhao

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

  • Guilong Zhang

    (Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China)

Abstract

Our study aimed to provide a scientific basis for an appropriate tillage management of wheat-maize rotation system, which is beneficial to the sustainable development of agriculture in the fluvo-aquic soil areas in China. Four tillage treatments were investigated after maize harvest, including rotary tillage with straw returning (RT), deep ploughing with straw returning (DP), subsoiling with straw returning (SS), and no tillage with straw mulching (NT). We evaluated soil organic carbon (SOC), dissolved organic carbon (DOC), permanganate oxidizable carbon (POXC), microbial biomass carbon (MBC), and particulate organic carbon (POC) in bulk soil and soil aggregates with five particle sizes (>5 mm, 5–2 mm, 2–1 mm, 1–0.25 mm, and <0.25 mm) under different tillage managements. Results showed that compared with RT treatment, NT treatment not only increased soil aggregate stability, but also enhanced SOC, DOC, and POC contents, especially those in large size macroaggregates. DP treatment also showed positive effects on soil aggregate stability and labile carbon fractions (DOC and POXC). Consequently, we suggest that no tillage or deep ploughing, rather than rotary tillage, could be better tillage management considering carbon storage. Meanwhile, we implied that mass fractal dimension (D m ) and POXC could be effective indicators of soil quality, as affected by tillage managements.

Suggested Citation

  • Xiaolin Shen & Lili Wang & Qichen Yang & Weiming Xiu & Gang Li & Jianning Zhao & Guilong Zhang, 2021. "Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements," Sustainability, MDPI, vol. 13(3), pages 1-11, February.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1541-:d:491301
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    Cited by:

    1. Xiangyuan Wu & Kening Wu & Huafu Zhao & Shiheng Hao & Zhenyu Zhou, 2023. "Impact of Land Cover Changes on Soil Type Mapping in Plain Areas: Evidence from Tongzhou District of Beijing, China," Land, MDPI, vol. 12(9), pages 1-14, August.

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