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Effects of Environmental Variables on Spatiotemporal Variations of Nitrous Oxide Fluxes in the Pristine Riparian Marsh, Northeast China

  • Liquan Song
  • Yunlong Yao
  • Weifeng Gao
  • Tijiu Cai
  • Qingbo Wang
  • Dongfeng Fu
  • Xiaoxin Sun
  • Hong LiangEmail author
  • Dawen GaoEmail author
Wetlands and Climate Change


Nitrous oxide (N2O) is an important greenhouse gas, and the riparian marsh plays an important role in modulating atmospheric concentrations of N2O. To investigate the effects of environmental variables on spatiotemporal variations of N2O fluxes in the pristine riparian marsh, the static chamber-GC techniques were used to explore the spatiotemporal variations of N2O fluxes in Calamagrostis angustifolia swamp meadow marsh (CASMM), Ecotone wetland (EW) and Carex Schmidtii Meinsh. marsh (CSMM) along the pristine riparian in Sanjiang Plain during one year. During non-growing season (October, 2015 to April, 2016), the variability of N2O fluxes in the three marshes were not significantly different (P > 0.05). However, during growing season (May to October, 2016), both variability differences of N2O fluxes between CSMM and EW, and between CSMM and CASMM were significant (P < 0.01). Atmospheric temperature, soil NH4+-N content and soil volumetric moisture content were the driving factors during non-growing season. During growing season, soil NH4+-N and NO3-N content were the driving factors among interactions of multiple environmental variables. CASMM and EW became the sinks of N2O during non-growing season but converted to the source of N2O during growing season. However, CSMM became all sink of N2O during every season.


Nitrous oxide (N2O) Spatiotemporal variations Driving factors Pristine riparian marsh Sanjiang plain 



The present study was gratefully supported by the National Natural Science Foundation of China (Grant No. 31470543), National Natural Science Foundation for Youth Science of China (Grant No. 41301081). We sincerely thank Heilongjiang Sanjiang Plain Wetland Ecosystem Research Station and Heilongjiang Sanjiang National Nature Reserve Authority, in Fuyuan City, Heilongjiang Province, China. Grateful thanks to Lin Lin (The Department of Public Foreign Language, Jiamusi University, China) for her fruitful helps.


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Copyright information

© Society of Wetland Scientists 2018

Authors and Affiliations

  • Liquan Song
    • 1
  • Yunlong Yao
    • 2
  • Weifeng Gao
    • 1
  • Tijiu Cai
    • 3
  • Qingbo Wang
    • 4
  • Dongfeng Fu
    • 4
  • Xiaoxin Sun
    • 3
  • Hong Liang
    • 5
    Email author
  • Dawen Gao
    • 1
    • 5
    • 6
    Email author
  1. 1.Center for Ecological ResearchNortheast Forestry UniversityHarbinChina
  2. 2.College of Wildlife ResourcesNortheast Forestry UniversityHarbinChina
  3. 3.College of ForestryNortheast Forestry UniversityHarbinChina
  4. 4.Heilongjiang Sanjiang National Nature Reserve AuthorityFuyuanChina
  5. 5.School of EnvironmentHarbin Institute of TechnologyHarbinChina
  6. 6.State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyHarbinChina

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