Xuan Li, Xin Yuan, Cong Men, Jing-Yi Yang, Jian-E Zuo
{"title":"[城市河流产生和排放 CH4 和 N2O 的研究进展]。","authors":"Xuan Li, Xin Yuan, Cong Men, Jing-Yi Yang, Jian-E Zuo","doi":"10.13227/j.hjkx.202308056","DOIUrl":null,"url":null,"abstract":"<p><p>Methane (CH<sub>4</sub>) and nitrous oxide (N<sub>2</sub>O) are concerning greenhouse gases. Urban rivers have been important emission sources of CH<sub>4</sub> and N<sub>2</sub>O in recent years. It is meaningful for city greenhouse gas reduction to provide a systematic analysis of spatiotemporal characteristics, mechanisms, and influencing factors of the production and emission of CH<sub>4</sub> and N<sub>2</sub>O from urban rivers. This study combed measured data of urban river CH<sub>4</sub> and N<sub>2</sub>O dissolution concentrations and emission fluxes from related literature published in the past 20 years and also concluded the spatiotemporal characteristics of urban river CH<sub>4</sub> and N<sub>2</sub>O emissions. This study estimated that CH<sub>4</sub> and N<sub>2</sub>O emissions (expressed by CO<sub>2</sub>-eq) from urban rivers in Beijing were 234.63 and 59.53 Gg CO<sub>2</sub>-eq in 2018, whereas CH<sub>4</sub> and N<sub>2</sub>O emissions (expressed by CO<sub>2</sub>-eq) from urban rivers in Shanghai were 159.86 and 260.24 Gg CO<sub>2</sub>-eq in 2018, respectively. These results demonstrated that urban rivers have become important CH<sub>4</sub> and N<sub>2</sub>O emission sources. This study summarized the production/consumption processes and import/export pathways of CH<sub>4</sub> and N<sub>2</sub>O in urban rivers. What is more, this study discussed the main influencing factors of urban river CH<sub>4</sub> and N<sub>2</sub>O production and emissions from the perspectives of river environmental conditions and urbanization effects. At last, the present work prospected the future research trends of urban river CH<sub>4</sub> and N<sub>2</sub>O emissions and provides urban rivers with scientific support for greenhouse gas reduction.</p>","PeriodicalId":35937,"journal":{"name":"Huanjing Kexue/Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Research Progress on Production and Emission of CH<sub>4</sub> and N<sub>2</sub>O from Urban Rivers].\",\"authors\":\"Xuan Li, Xin Yuan, Cong Men, Jing-Yi Yang, Jian-E Zuo\",\"doi\":\"10.13227/j.hjkx.202308056\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Methane (CH<sub>4</sub>) and nitrous oxide (N<sub>2</sub>O) are concerning greenhouse gases. Urban rivers have been important emission sources of CH<sub>4</sub> and N<sub>2</sub>O in recent years. It is meaningful for city greenhouse gas reduction to provide a systematic analysis of spatiotemporal characteristics, mechanisms, and influencing factors of the production and emission of CH<sub>4</sub> and N<sub>2</sub>O from urban rivers. This study combed measured data of urban river CH<sub>4</sub> and N<sub>2</sub>O dissolution concentrations and emission fluxes from related literature published in the past 20 years and also concluded the spatiotemporal characteristics of urban river CH<sub>4</sub> and N<sub>2</sub>O emissions. This study estimated that CH<sub>4</sub> and N<sub>2</sub>O emissions (expressed by CO<sub>2</sub>-eq) from urban rivers in Beijing were 234.63 and 59.53 Gg CO<sub>2</sub>-eq in 2018, whereas CH<sub>4</sub> and N<sub>2</sub>O emissions (expressed by CO<sub>2</sub>-eq) from urban rivers in Shanghai were 159.86 and 260.24 Gg CO<sub>2</sub>-eq in 2018, respectively. These results demonstrated that urban rivers have become important CH<sub>4</sub> and N<sub>2</sub>O emission sources. This study summarized the production/consumption processes and import/export pathways of CH<sub>4</sub> and N<sub>2</sub>O in urban rivers. What is more, this study discussed the main influencing factors of urban river CH<sub>4</sub> and N<sub>2</sub>O production and emissions from the perspectives of river environmental conditions and urbanization effects. At last, the present work prospected the future research trends of urban river CH<sub>4</sub> and N<sub>2</sub>O emissions and provides urban rivers with scientific support for greenhouse gas reduction.</p>\",\"PeriodicalId\":35937,\"journal\":{\"name\":\"Huanjing Kexue/Environmental Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Huanjing Kexue/Environmental Science\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://doi.org/10.13227/j.hjkx.202308056\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Environmental Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Huanjing Kexue/Environmental Science","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.13227/j.hjkx.202308056","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Environmental Science","Score":null,"Total":0}
[Research Progress on Production and Emission of CH4 and N2O from Urban Rivers].
Methane (CH4) and nitrous oxide (N2O) are concerning greenhouse gases. Urban rivers have been important emission sources of CH4 and N2O in recent years. It is meaningful for city greenhouse gas reduction to provide a systematic analysis of spatiotemporal characteristics, mechanisms, and influencing factors of the production and emission of CH4 and N2O from urban rivers. This study combed measured data of urban river CH4 and N2O dissolution concentrations and emission fluxes from related literature published in the past 20 years and also concluded the spatiotemporal characteristics of urban river CH4 and N2O emissions. This study estimated that CH4 and N2O emissions (expressed by CO2-eq) from urban rivers in Beijing were 234.63 and 59.53 Gg CO2-eq in 2018, whereas CH4 and N2O emissions (expressed by CO2-eq) from urban rivers in Shanghai were 159.86 and 260.24 Gg CO2-eq in 2018, respectively. These results demonstrated that urban rivers have become important CH4 and N2O emission sources. This study summarized the production/consumption processes and import/export pathways of CH4 and N2O in urban rivers. What is more, this study discussed the main influencing factors of urban river CH4 and N2O production and emissions from the perspectives of river environmental conditions and urbanization effects. At last, the present work prospected the future research trends of urban river CH4 and N2O emissions and provides urban rivers with scientific support for greenhouse gas reduction.