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Comparison of Nitrous Oxide Consumption of Paddy Soils Developed from Three Parent Materials in Subtropical China

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Listed:
  • Ling Wang

    (Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
    Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, USA)

  • Man Yang

    (Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China)

  • Jun Li

    (Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China)

  • Zhaohua Li

    (Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China)

  • Alan Wright

    (Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, USA)

  • Kun Li

    (Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China)

Abstract

Paddy soils developed from various parent materials are widely distributed in the subtropical region in China and have a non-negligible but unclear potential to consume nitrous oxide (N 2 O) due to long-term flooding. This study selected three of the most common paddy soils in subtropical China, developing from quaternary red soil (R), lake sediment sand (S), and alluvial soil (C), to study their total N 2 O consumption and total nitrogen (N 2 ) production using N 2 -free microcosm experiments. These paddy soils were treated with N 2 O addition (N 2 O treatment) or helium (He) addition (CK treatment) and incubated under flooding and anoxic conditions. The results showed that three alluvial soils (C1, C2, and C3) consumed over 99.93% of the N 2 O accumulated in the soil profile, significantly higher than R and S soils ( p < 0.05). And the N 2 production in three C soils was also significantly higher than other soils, accounting for 81.61% of the total N 2 O consumption. The main soil factors affecting N 2 O consumption in C, S, and R soils were soil clay content ( p < 0.05), soil sand content ( R 2 = 0.95, p < 0.001), and soil available potassium (AK) ( p < 0.01), respectively. These results indicate flooding paddy soils, no matter the parent materials developed, could consume extremely large amount of N 2 O produced in soil profiles.

Suggested Citation

  • Ling Wang & Man Yang & Jun Li & Zhaohua Li & Alan Wright & Kun Li, 2024. "Comparison of Nitrous Oxide Consumption of Paddy Soils Developed from Three Parent Materials in Subtropical China," Land, MDPI, vol. 13(10), pages 1-13, October.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:10:p:1710-:d:1501944
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    References listed on IDEAS

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    1. Zhong, Jinmei & Song, Yaqi & Yang, Man & Wang, Wei & Li, Zhaohua & Zhao, Liya & Li, Kun & Wang, Ling, 2023. "Strong N2O uptake capacity of paddy soil under different water conditions," Agricultural Water Management, Elsevier, vol. 278(C).
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