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N2O, CH4, and CO2 Emissions from Continuous Flooded, Wet, and Flooded Converted to Wet Soils

  • Muhammad Salman Khalid
  • Muhammad ShaabanEmail author
  • Ronggui HuEmail author
Research Article
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Abstract

Fluctuations in soil water content, either anthropogenic or natural, can remarkably influence the C and N pools in arable lands. The dynamics of C and N are directly related in regulation of greenhouse gases (GHGs) emissions. The present study was conducted to explore the effects of water regimes (continuous flooding, continuous wet, and flooding converted to wet) on soil GHGs emissions. Nitrous oxide (N2O) emissions from continuous flooding treatment were lower as compared with the continuous wet soil, but significantly (p ≤ 0.01) enlarged in the flooding converted to wet soil treatment through increased mineral nitrogen. Methane (CH4) emissions were significantly (p ≤ 0.01) higher in the continuous flooding when compared with the wet soil conditions but substantially decreased in the flooding converted to wet soil treatment. Carbon dioxide (CO2) emissions were significantly (p ≤ 0.01) larger in the flooding converted to wet soil treatment as compared with the continuous flooding and wet soil treatments owing to increased mineralization and C contents. The results suggest that converting flooding to wet soil can substantially triggers the C and N pools and thus influences the GHGs emissions from soil.

Keywords

Water regimes Flooded soil Methane Carbon dioxide Nitrous oxide C and N pools 

Notes

Funding Information

This work was financially supported by China Postdoctoral Science Foundation (2017M622478) and National Science Foundation of China (No. 41750110485).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

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Copyright information

© Sociedad Chilena de la Ciencia del Suelo 2019

Authors and Affiliations

  1. 1.College of Resources and EnvironmentHuazhong Agricultural UniversityWuhanChina
  2. 2.Department of Soil Science, Faculty of Agricultural SciencesBahauddin Zakariya UniversityMultanPakistan

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