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Effects of Nitrogen and Phosphorus Additions on Soil N 2 O Emission and Soil Carbon Storage in Lakeshore Zone

Author

Listed:
  • Sichen Qi

    (Yinshanbeilu Grassland Eco-hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    These authors contributed equally to this work.)

  • Guoxiu Jia

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    These authors contributed equally to this work.)

  • Weijia Cao

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China)

  • Wentao Zhong

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China)

  • Zhenxing Wang

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China)

  • Lixin Wang

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China)

  • Tiejun Liu

    (Yinshanbeilu Grassland Eco-hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Jianying Guo

    (Yinshanbeilu Grassland Eco-hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Lu Wen

    (Inner Mongolia Key Laboratory of Grassland Ecology and the Candidate State Key Laboratory of Ministry of Science and Technology, Inner Mongolia University, Hohhot 010021, China
    College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China)

Abstract

This study examined the short-term effects of nitrogen (N) and phosphorus (P) addition on soil N 2 O flux and organic carbon content in the lakeshore zone of an arid inland lake, Daihai. Treatments included control (N0P0), N addition (N1P0), P addition (N0P1), and NP co-addition (N1P1). Using the static chamber method and lab analyses, we measured soil N 2 O flux and organic carbon content at different growth stages. Results showed that, in the early growing season, short-term N and P addition had no significant effect on soil N 2 O flux, with all treatments acting as N 2 O sources. However, N and NP treatments significantly increased soil organic carbon (SOC) storage, improving carbon sequestration benefits by 72.7% to 98.1%. During the peak growing season, N and NP treatments significantly enhanced soil N 2 O emissions, while NP treatment further increased SOC storage, the carbon sequestration benefits of all treatments ranging from 49.0% to 56.5%. At the late growing season, N and P addition had no significant impact on soil N 2 O flux or organic carbon storage, with all sites acting as N 2 O sinks and SOC storage showing no significant change across treatments (carbon sequestration benefits ranged from 0.3% to 38.5%). The study highlights that the response of soil N 2 O flux to short-term N and P addition varies at different growth stages, while overall, N and P addition promotes soil carbon sequestration throughout the growing season in the lakeshore zone.

Suggested Citation

  • Sichen Qi & Guoxiu Jia & Weijia Cao & Wentao Zhong & Zhenxing Wang & Lixin Wang & Tiejun Liu & Jianying Guo & Lu Wen, 2025. "Effects of Nitrogen and Phosphorus Additions on Soil N 2 O Emission and Soil Carbon Storage in Lakeshore Zone," Sustainability, MDPI, vol. 17(13), pages 1-14, June.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:13:p:5987-:d:1690649
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    References listed on IDEAS

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    2. Yuanzhi Yao & Hanqin Tian & Hao Shi & Shufen Pan & Rongting Xu & Naiqing Pan & Josep G. Canadell, 2020. "Increased global nitrous oxide emissions from streams and rivers in the Anthropocene," Nature Climate Change, Nature, vol. 10(2), pages 138-142, February.
    3. Junxiang Cheng & Ligang Xu & Mingliang Jiang & Jiahu Jiang & Yanxue Xu, 2020. "Warming Increases Nitrous Oxide Emission from the Littoral Zone of Lake Poyang, China," Sustainability, MDPI, vol. 12(14), pages 1-12, July.
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