{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T05:56:09Z","timestamp":1767765369993,"version":"3.48.0"},"reference-count":70,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T00:00:00Z","timestamp":1767571200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["41775163"],"award-info":[{"award-number":["41775163"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["41975121"],"award-info":[{"award-number":["41975121"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["42275130"],"award-info":[{"award-number":["42275130"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>Nitrogen (N) deposition poses a multi-pronged threat to the carbon (C)-regulating services of moss understories. For forest C-cycle modeling under increasing N deposition, failure to mechanistically incorporate the moss-mediated processes risks severely overestimating the C sink potential of global forests. To explore whether and how N input affects the moss-mediated CH4 and carbon dioxide (CO2) fluxes, a five-year field measurement was performed in the N manipulation experimental plots treated with 22.5 and 45 kg N ha\u22121 yr\u22121 as ammonium chloride for nine years under a well-drained temperate forest in northeastern China. In the presence of mosses, the average annual CH4 uptake and CO2 emission in all N-treated plots ranged from 0.96 to 1.48 kg C-CH4 ha\u22121 yr\u22121 and from 4.04 to 4.41 Mg C-CO2 ha\u22121 yr\u22121, respectively, with a minimum in the high-N-treated plots, which were smaller than those in the control (1.29\u20131.83 kg C-CH4 ha\u22121 yr\u22121 and 4.82\u20136.51 Mg C-CO2 ha\u22121 yr\u22121). However, no significant differences in annual cumulative CO2 and CH4 fluxes across all treatments occurred without moss cover. Based on the differences in C fluxes with and without mosses, the average annual moss-mediated CH4 uptake and CO2 emission in the control were 0.77 kg C-CH4 ha\u22121 yr\u22121 and 2.40 Mg C-CO2 ha\u22121 yr\u22121, respectively, which were larger than those in the two N treatments. The N effects on annual moss-mediated C fluxes varied with annual meteorological conditions. Soil pH, available N and C contents, and microbial activity inferred from \u03b413C shifts in respired CO2 were identified as the main driving factors controlling the moss-mediated CH4 and CO2 fluxes. The results highlighted that this inhibitory effect of increasing N deposition on moss-mediated C fluxes in the context of climate change should be reasonably taken into account in model studies to accurately predict C fluxes under well-drained forest ecosystems.<\/jats:p>","DOI":"10.3390\/plants15010166","type":"journal-article","created":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T12:38:56Z","timestamp":1767616736000},"page":"166","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Inhibition by Nitrogen Addition of Moss-Mediated CH4 Uptake and CO2 Emission Under a Well-Drained Temperate Forest, Northeastern China"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1646-8316","authenticated-orcid":false,"given":"Xingkai","family":"Xu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Atmospheric Environment and Extreme Meteorology, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China"},{"name":"Department of Atmospheric Chemistry and Environmental Science, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jin","family":"Yue","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Atmospheric Environment and Extreme Meteorology, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6353-5182","authenticated-orcid":false,"given":"Weiguo","family":"Cheng","sequence":"additional","affiliation":[{"name":"Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6568-6205","authenticated-orcid":false,"given":"Yuhua","family":"Kong","sequence":"additional","affiliation":[{"name":"College of Forestry, Henan Agricultural University, Zhengzhou 450046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuirong","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8044-7635","authenticated-orcid":false,"given":"Dmitriy","family":"Khoroshaev","sequence":"additional","affiliation":[{"name":"Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino 142290, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8294-7796","authenticated-orcid":false,"given":"Vladimir","family":"Shanin","sequence":"additional","affiliation":[{"name":"Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino 142290, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"121","DOI":"10.2307\/2388665","article-title":"Pulse release of sugars and polyols from canopy bryophytes in tropical montane rain forest Guadeloupe French West Indies","volume":"24","author":"Coxson","year":"1992","journal-title":"Biotropica"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1007\/s004420100719","article-title":"Environmental controls on ground cover species composition and productivity in a boreal black spruce forest","volume":"129","author":"Bisbee","year":"2001","journal-title":"Oecologia"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1158","DOI":"10.1046\/j.1365-2486.2003.00650.x","article-title":"The contribution of bryophytes to the carbon exchange for a temperate rainforest","volume":"9","author":"Delucia","year":"2003","journal-title":"Glob. 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