{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,26]],"date-time":"2025-11-26T05:23:46Z","timestamp":1764134626704,"version":"3.46.0"},"reference-count":41,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T00:00:00Z","timestamp":1763942400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Second Comprehensive Scientific Expedition to the Qinghai\u2013Tibet Plateau","award":["2019QZKK0405"],"award-info":[{"award-number":["2019QZKK0405"]}]},{"name":"the Qinghai Province key research and development and transformation plan","award":["2022-QY-204"],"award-info":[{"award-number":["2022-QY-204"]}]},{"name":"the Qinghai Province science and technology plan","award":["2023-ZJ-905T"],"award-info":[{"award-number":["2023-ZJ-905T"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology"],"abstract":"<jats:p>Against the backdrop of global climate change, alterations in precipitation regimes\u2014including the increasing frequency of extreme events\u2014have become more widespread, exerting profound impacts on terrestrial ecosystems and reshaping greenhouse gas (GHG) emission dynamics in wetlands. Wetlands, as unique ecosystems formed at the interface of terrestrial and aquatic environments, play a critical role in regulating carbon source\u2013sink functions. In this study, we conducted in situ field simulation experiments to examine how precipitation changes influence the seasonal fluxes of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) in the Wayan Mountain headwater wetlands, and further explored the regulatory effects of vegetation attributes and soil physicochemical properties on these fluxes. The results revealed that a moderate increase in precipitation (+25%) enhanced CO2 emissions and vegetation growth while suppressing CH4 and N2O fluxes, indicating a positive ecosystem response to additional water supply. In contrast, extreme precipitation changes (+75% and \u221275%) weakened the coupling between GHG fluxes and soil factors, resulting in reduced CO2 flux, amplified variability in CH4 and N2O emissions, and inhibited vegetation growth and community diversity. The dominant controls differed among gases: CO2 was primarily regulated by soil carbon pools, CH4 was highly sensitive to water availability, and N2O was influenced by soil nitrogen, pH, and salinity. Overall, moderate increases in precipitation enhance the carbon sink capacity and community stability of alpine wetlands, whereas extreme hydrological fluctuations undermine ecosystem functioning. These findings provide important insights into carbon cycling processes and regulatory mechanisms of alpine wetlands under future climate change scenarios.<\/jats:p>","DOI":"10.3390\/biology14121663","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T14:59:04Z","timestamp":1763996344000},"page":"1663","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Precipitation-Driven Soil and Vegetation Changes Shape Wetland Greenhouse Gas Emissions"],"prefix":"10.3390","volume":"14","author":[{"given":"Ziwei","family":"Yang","sequence":"first","affiliation":[{"name":"School of Geographical Sciences, Qinghai Normal University, Xining 810008, China"},{"name":"Key Laboratory of Natural Geography and Environmental Processes of Qinghai Province, Xining 810008, China"},{"name":"Key Laboratory of Qinghai-Tibet Plateau Surface Process and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kelong","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Geographical Sciences, Qinghai Normal University, Xining 810008, China"},{"name":"Key Laboratory of Natural Geography and Environmental Processes of Qinghai Province, Xining 810008, China"},{"name":"Key Laboratory of Qinghai-Tibet Plateau Surface Process and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hairui","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Geographical Sciences, Qinghai Normal University, Xining 810008, China"},{"name":"Key Laboratory of Natural Geography and Environmental Processes of Qinghai Province, Xining 810008, China"},{"name":"Key Laboratory of Qinghai-Tibet Plateau Surface Process and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7143-4127","authenticated-orcid":false,"given":"Ni","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Geographical Sciences, Qinghai Normal University, Xining 810008, China"},{"name":"Key Laboratory of Natural Geography and Environmental Processes of Qinghai Province, Xining 810008, China"},{"name":"Key Laboratory of Qinghai-Tibet Plateau Surface Process and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Desheng","family":"Qi","sequence":"additional","affiliation":[{"name":"School of Geographical Sciences, Qinghai Normal University, Xining 810008, China"},{"name":"Key Laboratory of Natural Geography and Environmental Processes of Qinghai Province, Xining 810008, China"},{"name":"Key Laboratory of Qinghai-Tibet Plateau Surface Process and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,11,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1111\/padr.12234","article-title":"Intergovernmental panel on climate change special report on global warming of 1.5 \u00b0C Switzerland: IPCC","volume":"45","author":"Bongaarts","year":"2018","journal-title":"Popul. 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