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Atmospheric Organic Nitrogen Deposition in Strategic Water Sources of China after COVID-19 Lockdown

Author

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  • Yixuan Yang

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

  • Tongqian Zhao

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

  • Huazhe Jiao

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Li Wu

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

  • Chunyan Xiao

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

  • Xiaoming Guo

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

  • Chao Jin

    (Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China)

Abstract

Atmospheric nitrogen deposition (AND) may lead to water acidification and eutrophication. In the five months after December 2019, China took strict isolation and COVID-19 prevention measures, thereby causing lockdowns for approximately 1.4 billion people. The Danjiangkou Reservoir refers to the water source in the middle route of South-to-North Water Diversion Project in China, where the AND has increased significantly; thus, the human activities during the COVID-19 period is a unique case to study the influence of AND to water quality. This work monitored the AND distribution around the Danjiangkou Reservoir, including agricultural, urban, traffic, yard, and forest areas. After lockdown, the DTN, DON, and Urea-N were 1.99 kg · hm −2 · month −1 , 0.80 kg · hm −2 · month −1 , and 0.15 kg · hm −2 · month −1 , respectively. The detected values for DTN, DON, and Urea-N in the lockdown period decreased by 9.6%, 30.4%, and 28.97%, respectively, compared to 2019. The reduction in human activities is the reason for the decrease. The urban travel intensity in Nanyang city reduced from 6 to 1 during the lockdown period; the 3 million population which should normally travel out from city were in isolation at home before May. The fertilization action to wheat and orange were also delayed.

Suggested Citation

  • Yixuan Yang & Tongqian Zhao & Huazhe Jiao & Li Wu & Chunyan Xiao & Xiaoming Guo & Chao Jin, 2022. "Atmospheric Organic Nitrogen Deposition in Strategic Water Sources of China after COVID-19 Lockdown," IJERPH, MDPI, vol. 19(5), pages 1-14, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:5:p:2734-:d:759469
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    References listed on IDEAS

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    1. Yixuan Yang & Tongqian Zhao & Huazhe Jiao & Yunfei Wang & Haiyan Li, 2020. "Potential Effect of Porosity Evolution of Cemented Paste Backfill on Selective Solidification of Heavy Metal Ions," IJERPH, MDPI, vol. 17(3), pages 1-12, January.
    2. Yun Qiu & Xi Chen & Wei Shi, 2020. "Impacts of social and economic factors on the transmission of coronavirus disease 2019 (COVID-19) in China," Journal of Population Economics, Springer;European Society for Population Economics, vol. 33(4), pages 1127-1172, October.
    3. Guojun He & Yuhang Pan & Takanao Tanaka, 2020. "The short-term impacts of COVID-19 lockdown on urban air pollution in China," Nature Sustainability, Nature, vol. 3(12), pages 1005-1011, December.
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    1. Yixuan Yang & Tongqian Zhao & Huazhe Jiao & Li Wu & Chunyan Xiao & Xiaoming Guo, 2022. "Types and Distribution of Organic Amines in Organic Nitrogen Deposition in Strategic Water Sources," IJERPH, MDPI, vol. 19(7), pages 1-17, March.

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