{"title":"黄柳叶片甲烷和氧化亚氮通量对光照和土壤因子的响应。","authors":"Md Rezaul Karim, Md Abdul Halim, Sean C Thomas","doi":"10.1038/s43247-025-02453-4","DOIUrl":null,"url":null,"abstract":"<p><p>Foliar exchange of methane and nitrous oxide is a significant yet poorly understood component of global greenhouse gas budgets. To address this knowledge gap, we investigated foliar methane and nitrous oxide fluxes in <i>Salix bebbiana</i>, under varying light conditions (0-2000 μmol·m<sup>-2</sup>·s<sup>-1</sup>), soil aeration, and nitrogen availability, manipulated via biochar incorporation and nitrogen additions. Using rapid spectroscopic gas analysers, we observed consistent net foliar methane oxidation and nitrous oxide emission across all light conditions, demonstrating saturating light response patterns. Maximum flux rates were significantly more sensitive to soil conditions than carbon dioxide or water vapour exchange. Analysis revealed foliar methane and nitrous oxide fluxes overwhelmingly regulated by internal leaf processes like xylem transport, with modulation by external light intensity. These predictable light-response patterns provide a basis for scaling leaf-level methane and nitrous oxide fluxes, enhancing accuracy in predicting biogenic greenhouse gas fluxes within ecosystem and biosphere models.</p>","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"493"},"PeriodicalIF":8.9000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12182443/pdf/","citationCount":"0","resultStr":"{\"title\":\"Foliar methane and nitrous oxide fluxes in <i>Salix bebbiana</i> respond to light and soil factors.\",\"authors\":\"Md Rezaul Karim, Md Abdul Halim, Sean C Thomas\",\"doi\":\"10.1038/s43247-025-02453-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Foliar exchange of methane and nitrous oxide is a significant yet poorly understood component of global greenhouse gas budgets. To address this knowledge gap, we investigated foliar methane and nitrous oxide fluxes in <i>Salix bebbiana</i>, under varying light conditions (0-2000 μmol·m<sup>-2</sup>·s<sup>-1</sup>), soil aeration, and nitrogen availability, manipulated via biochar incorporation and nitrogen additions. Using rapid spectroscopic gas analysers, we observed consistent net foliar methane oxidation and nitrous oxide emission across all light conditions, demonstrating saturating light response patterns. Maximum flux rates were significantly more sensitive to soil conditions than carbon dioxide or water vapour exchange. Analysis revealed foliar methane and nitrous oxide fluxes overwhelmingly regulated by internal leaf processes like xylem transport, with modulation by external light intensity. These predictable light-response patterns provide a basis for scaling leaf-level methane and nitrous oxide fluxes, enhancing accuracy in predicting biogenic greenhouse gas fluxes within ecosystem and biosphere models.</p>\",\"PeriodicalId\":10530,\"journal\":{\"name\":\"Communications Earth & Environment\",\"volume\":\"6 1\",\"pages\":\"493\"},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12182443/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Communications Earth & Environment\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1038/s43247-025-02453-4\",\"RegionNum\":1,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/6/21 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Communications Earth & Environment","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1038/s43247-025-02453-4","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/6/21 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Foliar methane and nitrous oxide fluxes in Salix bebbiana respond to light and soil factors.
Foliar exchange of methane and nitrous oxide is a significant yet poorly understood component of global greenhouse gas budgets. To address this knowledge gap, we investigated foliar methane and nitrous oxide fluxes in Salix bebbiana, under varying light conditions (0-2000 μmol·m-2·s-1), soil aeration, and nitrogen availability, manipulated via biochar incorporation and nitrogen additions. Using rapid spectroscopic gas analysers, we observed consistent net foliar methane oxidation and nitrous oxide emission across all light conditions, demonstrating saturating light response patterns. Maximum flux rates were significantly more sensitive to soil conditions than carbon dioxide or water vapour exchange. Analysis revealed foliar methane and nitrous oxide fluxes overwhelmingly regulated by internal leaf processes like xylem transport, with modulation by external light intensity. These predictable light-response patterns provide a basis for scaling leaf-level methane and nitrous oxide fluxes, enhancing accuracy in predicting biogenic greenhouse gas fluxes within ecosystem and biosphere models.
期刊介绍:
Communications Earth & Environment is an open access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the Earth, environmental and planetary sciences. Research papers published by the journal represent significant advances that bring new insight to a specialized area in Earth science, planetary science or environmental science.
Communications Earth & Environment has a 2-year impact factor of 7.9 (2022 Journal Citation Reports®). Articles published in the journal in 2022 were downloaded 1,412,858 times. Median time from submission to the first editorial decision is 8 days.