Divergent environmental drivers for N<sub>2</sub>O and N<sub>2</sub> dynamics along an urbanized river-estuary continuum

Yingjie LI; Sibo ZHANG; Xiaoxiao LI; Xiaokang LI; Wenjie FAN; Qian DONG; Jie ZHANG; Xinxiao WU; Qian TAN

doi:10.1007/s00343-026-5468-y

Your Location：

Home >

Browse articles >

Divergent environmental drivers for N₂O and N₂ dynamics along an urbanized river-estuary continuum

Updated：2026-07-20

- Divergent environmental drivers for N₂O and N₂ dynamics along an urbanized river-estuary continuum
- Journal of Oceanology and Limnology Pages: 1-15(2026)
- Affiliations：
  
  1.Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Ocean, Guangdong University of Technology, Guangzhou 510006, China
  2.School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
  3.Guangdong Provincial Observation and Research Station for Social-Natural Complex Ecosystems in Haizhu Wetlands, Guangzhou 510399, China
- Author bio：
  
  qian_tan@gdut.edu.cn
- Funds：
- DOI：10.1007/s00343-026-5468-y
  CLC：
- Received：20 November 2025，
  
  Online First：20 July 2026，
- Accepted：
Scan QR Code
LI Yingjie,ZHANG Sibo,LI Xiaoxiao,et al.Divergent environmental drivers for N₂O and N₂ dynamics along an urbanized river-estuary continuum[J].Journal of Oceanology and Limnology,DOI:. DOI: 10.1007/s00343-026-5468-y.
DOI：

LI Yingjie,ZHANG Sibo,LI Xiaoxiao,et al.Divergent environmental drivers for N₂O and N₂ dynamics along an urbanized river-estuary continuum[J].Journal of Oceanology and Limnology,DOI:. DOI: 10.1007/s00343-026-5468-y. DOI：

摘要

Abstract

River-estuary continua are hotspots for nitrogen transformations; however

whether N

O and N

transformations vary in parallel in response to environmental variations along these continua remains poorly understood. This study compared spatial variations and environmental controls of excess N

O (ΔN

O) and excess N

(ΔN

) concentrations along an urban river-estuary continuum

combining multi-season measurements with metagenomic analysis of nitrogen-cycling functional genes. Both ΔN

O (-0.61–188.78 nmol/L) and ΔN

(-127.38–155.66 μmol/L) peaked in the river-estuary transition zone

coinciding with high nutrient inputs

and potentially prolonged water residence time. However

we found a clear decoupling between these two gases

evidenced by their insignificant correlation and spatially offset peaks. Machine learning analysis indicated their divergent environmental drivers; nitrate was more important for ΔN

while temperature and dissolved organic carbon (DOC) were more critical for ΔN

. DOC was positively correlated with the genetic potential ratio of N

production to fixation

and temperature was negatively linked to the genetic potential for N

O production relative to reduction. Furthermore

upon entering the estuary

ΔN

concentrations declined more sharply than ΔN

leading to widespread N

undersaturation (i.e.

ΔN

0). This undersaturation is consistent with reduced denitrification

reflected by decreased denitrifier abundance due to high salinity and sulfide levels

alongside persistent N

fixation. The slower decrease in ΔN

O is consistent with reduced N

O consumption and elevated ammonia-oxidizing archaea to ammonia-oxidizing bacteria ratio. Our findings highlight distinct biogeochemical controls on N

O and N

dynamics

providing insights for improving nitrogen removal and mitigating N

O emissions in aquatic ecosystems.

关键词

Keywords

references

Beaulieu J J , Tank J L , Hamilton S K et al . 2011 . Nitrous oxide emission from denitrification in stream and river networks . Proceedings of the National Academy of Sciences of the United States of America , 108 ( 1 ): 214 - 219 , https://doi.org/10.1073/pnas.1011464108 https://doi.org/10.1073/pnas.1011464108 .

Beusen A H W , Bouwman A F , Van Beek L P H et al . 2016 . Global riverine N and P transport to ocean increased during the 20th century despite increased retention along the aquatic continuum . Biogeosciences , 13 ( 8 ): 2441 - 2451 , https://doi.org/10.5194/bg-13-2441-2016 https://doi.org/10.5194/bg-13-2441-2016 .

Bissett A , Brown M V , Siciliano S D et al . 2013 . Microbial community responses to anthropogenically induced environmental change: towards a systems approach . Ecology Letters , 16 ( S1 ): 128 - 139 , https://doi.org/10.1111/ele.12109 https://doi.org/10.1111/ele.12109 .

Breitburg D , Levin L A , Oschlies A et al . 2018 . Declining oxygen in the global ocean and coastal waters . Science , 359 ( 6371 ): eaam 7240 , https://doi.org/10.1126/science.aam7240 https://doi.org/10.1126/science.aam7240 .

Cébron A , Berthe T , Garnier J . 2003 . Nitrification and nitrifying bacteria in the lower Seine River and Estuary (France) . Applied and Environmental Microbiology , 69 ( 12 ): 7091 - 7100 , https://doi.org/10.1128/AEM.69.12.7091-7100.2003 https://doi.org/10.1128/AEM.69.12.7091-7100.2003 .

Chen C T A , Wang S L , Lu X X et al . 2008 . Hydrogeochemistry and greenhouse gases of the Pearl River, its estuary and beyond . Quaternary International , 186 ( 1 ): 79 - 90 , https://doi.org/10.1016/j.quaint.2007.08.024 https://doi.org/10.1016/j.quaint.2007.08.024 .

Chen S F , Zhou Y Q , Chen Y R et al . 2018 . fastp: an ultra-fast all-in-one FASTQ preprocessor . Bioinformatics , 34 ( 17 ): i884 - i890 , https://doi.org/10.1093/bioinformatics/bty560 https://doi.org/10.1093/bioinformatics/bty560 .

Cheng X , Dong Y , Fan F Q et al . 2023 . Shifts in the high-resolution spatial distribution of dissolved N 2 O and the underlying microbial communities and processes in the Pearl River Estuary. Water Research , 243 : 120351 , https://doi.org/10.1016/j.watres.2023.120351 https://doi.org/10.1016/j.watres.2023.120351 .

Devol A H . 2015 . Denitrification, anammox, and N 2 production in marine sediments . Annual Review of Marine Science , 7 ( 1 ): 403 - 423 , https://doi.org/10.1146/annurev-marine-010213-135040 https://doi.org/10.1146/annurev-marine-010213-135040 .

Dong Y , Liu J , Cheng X et al . 2023 . Wastewater-influenced estuaries are characterized by disproportionately high nitrous oxide emissions but overestimated IPCC emission factor . Communications Earth & Environment , 4 ( 1 ): 395 , https://doi.org/10.1038/s43247-023-01051-6 https://doi.org/10.1038/s43247-023-01051-6 .

Elvidge C D , Zhizhin M , Ghosh T et al . 2021 . Annual time series of global VIIRS nighttime lights derived from monthly averages: 2012 to 2019 . Remote Sensing , 13 ( 5 ): 922 , https://doi.org/10.3390/rs13050922 https://doi.org/10.3390/rs13050922 .

Eyre B D , Maher D T , Sanders C . 2016 . The contribution of denitrification and burial to the nitrogen budgets of three geomorphically distinct Australian estuaries: importance of seagrass habitats . Limnology and Oceanography , 61 ( 3 ): 1144 - 1156 , https://doi.org/10.1002/lno.10280 https://doi.org/10.1002/lno.10280 .

Fortune J , Kaestli M , Butler E C V et al . 2022 . Denitrification in intertidal sediments of a tropical estuary subject to increasing development pressures . Aquatic Sciences , 84 ( 4 ): 53 , https://doi.org/10.1007/s00027-022-00885-0 https://doi.org/10.1007/s00027-022-00885-0 .

Fu L M , Niu B F , Zhu Z W et al . 2012 . CD-HIT: accelerated for clustering the next-generation sequencing data . Bioinformatics , 28 ( 23 ): 3150 - 3152 , https://doi.org/10.1093/bioinformatics/bts565 https://doi.org/10.1093/bioinformatics/bts565 .

Fulweiler R W , Rinehart S , Taylor J et al . 2025 . Global importance of nitrogen fixation across inland and coastal waters . Science , 388 ( 6752 ): 1205 - 1209 , https://doi.org/10.1126/science.adt1511 https://doi.org/10.1126/science.adt1511 .

Gao Y F , Zhu L , Zhang R Y et al . 2025 . Over one-third of N 2 O emissions originate from water in large, shallow and eutrophic Taihu Lake, China. Water Research , 286 : 124267 , https://doi.org/10.1016/j.watres.2025.124267 https://doi.org/10.1016/j.watres.2025.124267 .

Hallin S , Philippot L , Löffler F E et al . 2018 . Genomics and ecology of novel N 2 O-reducing microorganisms . Trends in Microbiology , 26 ( 1 ): 43 - 55 , https://doi.org/10.1016/j.tim.2017.07.003 https://doi.org/10.1016/j.tim.2017.07.003 .

Ho L , Barthel M , Panique-Casso D et al . 2023 . Impact of salinity gradient, water pollution and land use types on greenhouse gas emissions from an urbanized estuary. Environmental Pollution , 336 : 122500 , https://doi.org/10.1016/j.envpol.2023.122500 https://doi.org/10.1016/j.envpol.2023.122500 .

Holtan-Hartwig L , Dörsch P , Bakken L R . 2002 . Low temperature control of soil denitrifying communities: kinetics of N 2 O production and reduction . Soil Biology and Biochemistry , 34 ( 11 ): 1797 - 1806 , https://doi.org/10.1016/S0038-0717(02)00169-4 https://doi.org/10.1016/S0038-0717(02)00169-4 .

Hou L , Xie X B , Wan X H et al . 2018 . Niche differentiation of ammonia and nitrite oxidizers along a salinity gradient from the Pearl River estuary to the South China Sea . Biogeosciences , 15 ( 16 ): 5169 - 5187 , https://doi.org/10.5194/bg-15-5169-2018 https://doi.org/10.5194/bg-15-5169-2018 .

Hyatt D , Chen G L , LoCascio P F et al . 2010 . Prodigal: prokaryotic gene recognition and translation initiation site identification . BMC Bioinformatics , 11 ( 1 ): 119 , https://doi.org/10.1186/1471-2105-11-119 https://doi.org/10.1186/1471-2105-11-119 .

Kana T M , Darkangelo C , Hunt M D et al . 1994 . Membrane inlet mass spectrometer for rapid high-precision determination of N 2 , O 2 , and Ar in environmental water samples . Analytical Chemistry , 66 ( 23 ): 4166 - 4170 , https://doi.org/10.1021/ac00095a009 https://doi.org/10.1021/ac00095a009 .

Klähn S , Hagemann M . 2011 . Compatible solute biosynthesis in cyanobacteria . Environmental Microbiology , 13 ( 3 ): 551 - 562 , https://doi.org/10.1111/j.1462-2920.2010.02366.x https://doi.org/10.1111/j.1462-2920.2010.02366.x .

Knapp A N . 2012 . The sensitivity of marine N 2 fixation to dissolved inorganic nitrogen. Frontiers in Microbiology , 3 : 374 , https://doi.org/10.3389/fmicb.2012.00374 https://doi.org/10.3389/fmicb.2012.00374 .

Kraft B , Tegetmeyer H E , Sharma R et al . 2014 . The environmental controls that govern the end product of bacterial nitrate respiration . Science , 345 ( 6197 ): 676 - 679 , https://doi.org/10.1126/science.1254070 https://doi.org/10.1126/science.1254070 .

Kuypers M M M , Marchant H K , Kartal B . 2018 . The microbial nitrogen-cycling network . Nature Reviews Microbiology , 16 ( 5 ): 263 - 276 , https://doi.org/10.1038/nrmicro.2018.9 https://doi.org/10.1038/nrmicro.2018.9 .

Li D H , Liu C M , Luo R B et al . 2015 . MEGAHIT: an ultra-fast single-node solution for large and complex metagenomics assembly via succinct de Bruijn graph . Bioinformatics , 31 ( 10 ): 1674 - 1676 , https://doi.org/10.1093/bioinformatics/btv033 https://doi.org/10.1093/bioinformatics/btv033 .

Li X H , Yan X , Han H J et al . 2024 . The trade-off effects of water flow velocity on denitrification rates in open channel waterways. Journal of Hydrology , 637 : 131374 , https://doi.org/10.1016/j.jhydrol.2024.131374 https://doi.org/10.1016/j.jhydrol.2024.131374 .

Li Y H , Luo Y , Liu J et al . 2023 . Sources and sinks of N 2 O in the subtropical Jiulong River Estuary, Southeast China. Frontiers in Marine Science , 10 : 1138258 , https://doi.org/10.3389/fmars.2023.1138258 https://doi.org/10.3389/fmars.2023.1138258 .

Lin H , Dai M H , Kao S J et al . 2016 . Spatiotemporal variability of nitrous oxide in a large eutrophic estuarine system: the Pearl River Estuary, China . Marine Chemistry , 182 : 14 - 24 , https://doi.org/10.1016/j.marchem.2016.03.005 https://doi.org/10.1016/j.marchem.2016.03.005 .

Liu S Y , Gao Q Z , Wu J X et al . 2022 . Spatial distribution and influencing mechanism of CO 2 , N 2 O and CH 4 in the Pearl River Estuary in summer. Science of the Total Environment , 846 : 157381 , https://doi.org/10.1016/j.scitotenv.2022.157381 https://doi.org/10.1016/j.scitotenv.2022.157381 .

Lundberg S M , Lee S I . 2017 . A unified approach to interpreting model predictions . In: Proceedings of the 31st International Conference on Neural Information Processing Systems . Curran Associates Inc. , Long Beach, California, USA , p. 4768 - 4777 , https://doi.org/10.5555/3295222.3295230 https://doi.org/10.5555/3295222.3295230 .

Luo Z W , Zhong Q P , Han X G et al . 2021 . Depth-dependent variability of biological nitrogen fixation and diazotrophic communities in mangrove sediments . Microbiome , 9 ( 1 ): 212 , https://doi.org/10.1186/s40168-021-01164-0 https://doi.org/10.1186/s40168-021-01164-0 .

Ma L , Lin H , Xie X B et al . 2019 . Major role of ammonia-oxidizing bacteria in N 2 O production in the Pearl River estuary . Biogeosciences , 16 ( 24 ): 4765 - 4781 , https://doi.org/10.5194/bg-16-4765-2019 https://doi.org/10.5194/bg-16-4765-2019 .

Pennino M J , Kaushal S S , Murthy S N et al . 2016 . Sources and transformations of anthropogenic nitrogen along an urban river-estuarine continuum . Biogeosciences , 13 ( 22 ): 6211 - 6228 , https://doi.org/10.5194/bg-13-6211-2016 https://doi.org/10.5194/bg-13-6211-2016 .

Quick A M , Reeder W J , Farrell T B et al . 2019 . Nitrous oxide from streams and rivers: a review of primary biogeochemical pathways and environmental variables . Earth-Science Reviews , 191 : 224 - 262 , https://doi.org/10.1016/j.earscirev.2019.02.021 https://doi.org/10.1016/j.earscirev.2019.02.021 .

Ravishankara A R , Daniel J S , Portmann R W . 2009 . Nitrous oxide (N 2 O): the dominant ozone-depleting substance emitted in the 21st century . Science , 326 ( 5949 ): 123 - 125 , https://doi.org/10.1126/science.1176985 https://doi.org/10.1126/science.1176985 .

Ren Y , Yu G , Shi C P et al . 2022 . Majorbio Cloud: a one-stop, comprehensive bioinformatic platform for multiomics analyses . iMeta , 1 ( 2 ): e 12 , https://doi.org/10.1002/imt2.12 https://doi.org/10.1002/imt2.12 .

Schulz G , Sanders T , Voynova Y G et al . 2023 . Seasonal variability of nitrous oxide concentrations and emissions in a temperate estuary . Biogeosciences , 20 ( 15 ): 3229 - 3247 , https://doi.org/10.5194/bg-20-3229-2023 https://doi.org/10.5194/bg-20-3229-2023 .

Sheng H , Darby S E , Zhao N et al . 2024 . Anthropogenic eutrophication and stratification strength control hypoxia in the Yangtze Estuary . Communications Earth & Environment , 5 ( 1 ): 235 , https://doi.org/10.1038/s43247-024-01403-w https://doi.org/10.1038/s43247-024-01403-w .

Stein L Y , Klotz M G . 2016 . The nitrogen cycle . Current Biology , 26 ( 3 ): R94 - R98 , https://doi.org/10.1016/j.cub.2015.12.021 https://doi.org/10.1016/j.cub.2015.12.021 .

Stokes E C , Román M O , Wang Z S et al . 2021 . Retired satellites: a chance to shed light . Science , 373 ( 6562 ): 1451 - 1452 , https://doi.org/10.1126/science.abl9965 https://doi.org/10.1126/science.abl9965 .

Tang S , Cheng X Y , Liu Y Q et al . 2024 . A unicellular cyanobacterium relies on sodium energetics to fix N 2 . Nature Communications , 15 ( 1 ): 9716 , https://doi.org/10.1038/s41467-024-53978-9 https://doi.org/10.1038/s41467-024-53978-9 .

Tang W Y , Cerdán-García E , Berthelot H et al . 2020 . New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods . The ISME Journal , 14 ( 10 ): 2514 - 2526 , https://doi.org/10.1038/s41396-020-0703-6 https://doi.org/10.1038/s41396-020-0703-6 .

Tang W Y , Wang S , Fonseca-Batista D et al . 2019 . Revisiting the distribution of oceanic N 2 fixation and estimating diazotrophic contribution to marine production . Nature Communications , 10 ( 1 ): 831 , https://doi.org/10.1038/s41467-019-08640-0 https://doi.org/10.1038/s41467-019-08640-0 .

Torregrosa-Crespo J , Miralles-Robledillo J M , Bernabeu E et al . 2023 . Denitrification in hypersaline and coastal environments . FEMS Microbiology Letters , 370 : fnad 066 , https://doi.org/10.1093/femsle/fnad066 https://doi.org/10.1093/femsle/fnad066 .

Tu Q C , Lin L , Cheng L et al . 2019 . NCycDB: a curated integrative database for fast and accurate metagenomic profiling of nitrogen cycling genes . Bioinformatics , 35 ( 6 ): 1040 - 1048 , https://doi.org/10.1093/bioinformatics/bty741 https://doi.org/10.1093/bioinformatics/bty741 .

Voland R W , Wang H S , Abruña H D et al . 2025 . Nitrous oxide production via enzymatic nitroxyl from the nitrifying archaeon Nitrosopumilus maritimus . Proceedings of the National Academy of Sciences of the United States of America , 122 ( 3 ): e 2416971122 , https://doi.org/10.1073/pnas.2416971122 https://doi.org/10.1073/pnas.2416971122 .

Wan X S , Sheng H X , Liu L et al . 2023 . Particle-associated denitrification is the primary source of N 2 O in oxic coastal waters . Nature Communications , 14 ( 1 ): 8280 , https://doi.org/10.1038/s41467-023-43997-3 https://doi.org/10.1038/s41467-023-43997-3 .

Wang J , Kan J J , Qian G et al . 2019 . Denitrification and anammox: understanding nitrogen loss from Yangtze Estuary to the east China sea (ECS) . Environmental Pollution , 252 : 1659 - 1670 , https://doi.org/10.1016/j.envpol.2019.06.025 https://doi.org/10.1016/j.envpol.2019.06.025 .

Wang J F , Wang G Q , Zhang S B et al . 2022a . Indirect nitrous oxide emission factors of fluvial networks can be predicted by dissolved organic carbon and nitrate from local to global scales . Global Change Biology , 28 ( 24 ): 7270 - 7285 , https://doi.org/10.1111/gcb.16458 https://doi.org/10.1111/gcb.16458 .

Wang J F , Xia X H , Liu S D et al . 2022b . The dominant role of the water column in nitrogen removal and N 2 O emissions in large rivers . Geophysical Research Letters , 49 ( 12 ): e2022 GL 098955 , https://doi.org/10.1029/2022GL098955 https://doi.org/10.1029/2022GL098955 .

Wang L , Shang S H , Liu W Z et al . 2023 . Hydrodynamic controls on nitrogen distribution and removal in aquatic ecosystems. Water Research , 242 : 120257 , https://doi.org/10.1016/j.watres.2023.120257 https://doi.org/10.1016/j.watres.2023.120257 .

Wang P D , Li J L , Luo X Q et al . 2022c . Biogeographical distributions of nitrogen-cycling functional genes in a subtropical estuary . Functional Ecology , 36 ( 1 ): 187 - 201 , https://doi.org/10.1111/1365-2435.13949 https://doi.org/10.1111/1365-2435.13949 .

Wang R , Zhang H , Zhang W et al 2020 . An urban polluted river as a significant hotspot for water-atmosphere exchange of CH 4 and N 2 O. Environmental Pollution , 264 : 114770 , https://doi.org/10.1016/j.envpol.2020.114770 https://doi.org/10.1016/j.envpol.2020.114770 .

Wang S , Huang J L , Wu Z et al . 2025a . Global mapping of flux and microbial sources for oceanic N 2 O . Nature Communications , 16 ( 1 ): 3341 , https://doi.org/10.1038/s41467-025-58715-4 https://doi.org/10.1038/s41467-025-58715-4 .

Wang X H , Lv Q Y , Xu Y J et al . 2025b . Predicting nitrous oxide emission from china’s waterbodies with multiple deep learning algorithms . Water Resources Research , 61 ( 8 ): e2025 WR 040670 , https://doi.org/10.1029/2025WR040670 https://doi.org/10.1029/2025WR040670 .

Ward N D , Bianchi T S , Medeiros P M et al . 2017 . Where carbon goes when water flows: carbon cycling across the aquatic continuum. Frontiers in Marine Science , 4 : 7 , https://doi.org/10.3389/fmars.2017.00007 https://doi.org/10.3389/fmars.2017.00007 .

Wei H C , Gao D Z , Liu Y et al . 2020 . Sediment nitrate reduction processes in response to environmental gradients along an urban river-estuary-sea continuum. Science of the Total Environment , 718 : 137185 , https://doi.org/10.1016/j.scitotenv.2020.137185 https://doi.org/10.1016/j.scitotenv.2020.137185 .

Wrage-Mönnig N , Horn M A , Well R et al . 2018 . The role of nitrifier denitrification in the production of nitrous oxide revisited . Soil Biology and Biochemistry , 123 : A3 - A16 , https://doi.org/10.1016/j.soilbio.2018.03.020 https://doi.org/10.1016/j.soilbio.2018.03.020 .

Wu J Z , Chen N W , Hong H S et al . 2013 . Direct measurement of dissolved N 2 and denitrification along a subtropical river-estuary gradient, China . Marine Pollution Bulletin , 66 ( 1-2 ): 125 - 134 , https://doi.org/10.1016/j.marpolbul.2012.10.020 https://doi.org/10.1016/j.marpolbul.2012.10.020 .

Wu Z H , Li M C , Qu L P et al . 2024 . Metagenomic insights into microbial adaptation to the salinity gradient of a typical short residence-time estuary . Microbiome , 12 ( 1 ): 115 , https://doi.org/10.1186/s40168-024-01817-w https://doi.org/10.1186/s40168-024-01817-w .

Xia X H , Jia Z M , Liu T et al . 2017 . Coupled nitrification-denitrification caused by suspended sediment (SPS) in rivers: importance of SPS size and composition . Environmental Science & Technology , 51 ( 1 ): 212 - 221 , https://doi.org/10.1021/acs.est.6b03886 https://doi.org/10.1021/acs.est.6b03886 .

Xia X H , Zhang S B , Li S L et al . 2018 . The cycle of nitrogen in river systems: sources, transformation, and flux . Environmental Science : Processes & Impacts , 20 ( 6 ): 863 - 891 , https://doi.org/10.1039/C8EM00042E https://doi.org/10.1039/C8EM00042E .

Xiao Q T , Hu Z H , Fu C S et al . 2019 . Surface nitrous oxide concentrations and fluxes from water bodies of the agricultural watershed in Eastern China . Environmental Pollution , 251 : 185 - 192 , https://doi.org/10.1016/j.envpol.2019.04.076 https://doi.org/10.1016/j.envpol.2019.04.076 .

Xiao Q T , Xiao W , Luo J H et al . 2023 . Management actions mitigate the risk of carbon dioxide emissions from urban lakes. Journal of Environmental Management , 344 : 118626 , https://doi.org/10.1016/j.jenvman.2023.118626 https://doi.org/10.1016/j.jenvman.2023.118626 .

Xin Y , Gao Q , Chen X et al . 2024 . High biological N fixation potential dominated by heterotrophic diazotrophs in alpine permafrost rivers on the Qinghai-Tibet Plateau. Water Research , 264 : 122239 , https://doi.org/10.1016/j.watres.2024.122239 https://doi.org/10.1016/j.watres.2024.122239 .

Xu X G , Yang Y X , Zhou Y W et al . 2025 . Global patterns and drivers of coupling between anammox and denitrification processes across inland aquatic ecosystems . Communications Earth & Environment , 6 ( 1 ): 23 , https://doi.org/10.1038/s43247-024-01980-w https://doi.org/10.1038/s43247-024-01980-w .

Yang J Y T , Hsu T C , Tan E H et al . 2022 . Sedimentary processes dominate nitrous oxide production and emission in the hypoxic zone off the Changjiang River estuary. Science of the Total Environment , 827 : 154042 , https://doi.org/10.1016/j.scitotenv.2022.154042 https://doi.org/10.1016/j.scitotenv.2022.154042 .

Yao Y Z , Tian H Q , Shi H et al . 2020 . Increased global nitrous oxide emissions from streams and rivers in the Anthropocene . Nature Climate Change , 10 ( 2 ): 138 - 142 , https://doi.org/10.1038/s41558-019-0665-8 https://doi.org/10.1038/s41558-019-0665-8 .

Yu H M , Duan Y H , Mulder J et al . 2023 . Universal temperature sensitivity of denitrification nitrogen losses in forest soils . Nature Climate Change , 13 ( 7 ): 726 - 734 , https://doi.org/10.1038/s41558-023-01708-2 https://doi.org/10.1038/s41558-023-01708-2 .

Zehr J P , Capone D G . 2020 . Changing perspectives in marine nitrogen fixation . Science , 368 ( 6492 ): eaay 9514 , https://doi.org/10.1126/science.aay9514 https://doi.org/10.1126/science.aay9514 .

Zhang L W , Zhang S B , Xia X H et al . 2022 . Unexpectedly minor nitrous oxide emissions from fluvial networks draining permafrost catchments of the East Qinghai-Tibet Plateau . Nature Communications , 13 ( 1 ): 950 , https://doi.org/10.1038/s41467-022-28651-8 https://doi.org/10.1038/s41467-022-28651-8 .

Zhang S B , Xia X H , Xin Y et al . 2023 . Electrical conductivity as a reliable indicator for assessing land use effects on stream N 2 O concentration. Journal of Hydrology , 626 : 130253 , https://doi.org/10.1016/j.jhydrol.2023.130253 https://doi.org/10.1016/j.jhydrol.2023.130253 .

Zhang Y , Gan J P , Yang Q C . 2024 . Spatiotemporal variability of streamflow in the Pearl River Basin: controls of land surface processes and atmospheric impacts . Hydrological Processes , 38 ( 4 ): e 15151 , https://doi.org/10.1002/hyp.15151 https://doi.org/10.1002/hyp.15151 .

Zhao M , Zhou Y Y , Li X C et al . 2020 . Mapping urban dynamics (1992-2018) in Southeast Asia using consistent nighttime light data from DMSP and VIIRS. Remote Sensing of Environment , 248 : 111980 , https://doi.org/10.1016/j.rse.2020.111980 https://doi.org/10.1016/j.rse.2020.111980 .

Zheng Y J , Wu S , Xiao S Q et al . 2022 . Global methane and nitrous oxide emissions from inland waters and estuaries . Global Change Biology , 28 ( 15 ): 4713 - 4725 , https://doi.org/10.1111/gcb.16233 https://doi.org/10.1111/gcb.16233 .

Zheng Z Z , Zheng L W , Xu M N et al . 2020 . Substrate regulation leads to differential responses of microbial ammonia-oxidizing communities to ocean warming . Nature Communications , 11 ( 1 ): 3511 , https://doi.org/10.1038/s41467-020-17366-3 https://doi.org/10.1038/s41467-020-17366-3 .

Zhou Y W , Suenaga T , Qi C et al . 2021 . Temperature and oxygen level determine N 2 O respiration activities of heterotrophic N 2 O-reducing bacteria: Biokinetic study . Biotechnology and Bioengineering , 118 ( 3 ): 1330 - 1341 , https://doi.org/10.1002/bit.27654 https://doi.org/10.1002/bit.27654 .

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Mutual feedback between algal blooming and global warming

Host gene-intestinal microbiota interaction during growth of large yellow croaker (Larimichthys crocea)

Potential molecular mechanism of growth difference in large yellow croaker: metabolomic and metagenomic analyses

From rubble to reef: ecological transformation in volcanic rock-assisted coral restoration

Dark environment affects circadian rhythms of gut bacterial community in the mud crab Scylla paramamosain

Related Author

Boqiang QIN

Jingan CHEN

Jingfu WANG

Yan ZENG

Botian ZHOU

Kun SHAN

Xianfu ZHAO

Guijun YANG

Related Institution

Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences

State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences

School of Environment and Ecology, Jiangnan University

Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences

State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences

Address：Editorial Office of JOL, 88 Haijun Rd. Qingdao, 266000, China
Tel：+86-532-82898754 Email：jol@qdio.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰

Divergent environmental drivers for N2O and N2 dynamics along an urbanized river-estuary continuum

DOI：10.1007/s00343-026-5468-y

摘要

Abstract

关键词

Keywords

references

Divergent environmental drivers for N₂O and N₂ dynamics along an urbanized river-estuary continuum