Cited by 143Peatlands and Wetlands EcologySoil Carbon and Nitrogen DynamicsSoil and Water Nutrient Dynamics

Global nitrogen input on wetland ecosystem: the driving mechanism of soil labile carbon and nitrogen on greenhouse gas emissions

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Chen, Mengli, Chang, Lian, Zhang, Junmao, Guo, Fucheng, Vymazal, Jan, He, Qiang, Chen, Yi·2020·Environmental Science and Ecotechnology

Abstract

Greenhouse gas emissions from wetlands are significantly promoted by global nitrogen input for changing the rate of soil carbon and nitrogen cycling, and are substantially affected by soil labile carbon and nitrogen conversely. However, the driving mechanism by which soil labile carbon and nitrogen affect greenhouse gas emissions from wetland ecosystems under global nitrogen input is not well understood. Working out the driving factor of nitrogen input on greenhouse gas emissions from wetlands is critical to reducing global warming from nitrogen input. Thus, we synthesized 72 published studies (2144 paired observations) of greenhouse gas fluxes and soil labile compounds of carbon and nitrogen (ammonium, nitrate, dissolved organic carbon, soil microbial biomass nitrogen and carbon), to understand the effects of labile carbon and nitrogen on greenhouse gas emissions under global nitrogen input. Across the data set, nitrogen input significantly promoted carbon dioxide, methane and nitrous oxide emissions from wetlands. In particular, at lower nitrogen rates (<100 kg ha−1·yr−1) and with added ammonium compounds, freshwater wetland significantly promoted carbon dioxide and methane emissions. Peatland was the largest nitrous oxide source under these conditions. This meta-analysis also revealed that nitrogen input stimulated dissolved organic carbon, ammonium, nitrate, microbial biomass carbon and microbial biomass nitrogen accumulation in the wetland ecosystem. The variation-partitioning analysis and structural equation model were used to analyze the relationship between the greenhouse gas and labile carbon and nitrogen further. These results revealed that dissolved organic carbon (DOC) is the primary factor driving greenhouse gas emission from wetlands under global nitrogen input, whereas microbial biomass carbon (MBC) more directly affects greenhouse gas emission than other labile carbon and nitrogen.

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Crossref · 10.1016/j.ese.2020.100063

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  • Eutrophication of aquatic environments caused by excessive loadings of phosphorus and nitrogen results in environmental concerns such as generation of solid wastes and unpleasant emissions to air.

    “Eutrophication of aquatic environments caused by excessive loadings of phosphorus (P) and nitrogen (N) results in environmental concerns such as the generation of solid wastes and unpleasant emissions to the air [2,3].”

    From Microalgae-based wastewater treatment: Mechanisms, challenges, recent advances, and future prospects (2023) · cites this paper as [2]

    The Introduction (page unavailable) says nitrogen can move from wetlands into rivers or lakes and cause eutrophication. The Results (page unavailable) report increased greenhouse-gas emissions from wetlands under nitrogen input. The paper does not link those emissions to eutrophication or support the claim about phosphorus, solid wastes, or unpleasant air emissions. (LLM, conf=0.85)

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  1. [31]IPCC Climate Change. The Physical Science Basis 2013 Cambridge University Press Cambridge, United Kingdom and New York, NY, USA

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Authors
Chen, M., Chang, L., Zhang, J., Guo, F., Vymazal, J., He, Q., & Chen, Y.
Affiliations
  • Chongqing University (CN)
  • Czech University of Life Sciences Prague (CZ)
Corresponding author
Chen, Yi
Venue
Environmental Science and Ecotechnology
Publisher
Elsevier BV
Published
2020-10
Volume
4
Pages
100063
ISSN
  • 2096-9643 (ISSN-L)
  • 2666-4984
OpenAlex
W3093193733
Cited by
143
References
105
Citations by year
2026: 26 · 2025: 26 · 2024: 36 · 2023: 26 · 2022: 22 · 2021: 6
FWCI
1.19
Type
journal article
Language
en
Open access
Locations
  • Environmental Science and Ecotechnology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (51978099)
  • Chongqing Talents Plan for Young Talents (CQY201905062)
Topics
  • Physical Sciences › Environmental Science › Ecology › Peatlands and Wetlands Ecology
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Soil and Water Nutrient Dynamics
Keywords
dissolved organic carbon, microbial biomass carbon, microbial biomass nitrogen, ammonium, nitrate, CO2 emissions, methane emissions, nitrous oxide emissions, freshwater wetlands, peatlands, nitrogen deposition

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