{"title":"随季节变化的河流溶解无机氮全球综合模拟框架","authors":"Yizhou Huang, Daisuke Tokuda, Xudong Zhou, T. Oki","doi":"10.3178/hrl.15.50","DOIUrl":null,"url":null,"abstract":": Understanding patterns and seasonal variations of exces‐ sive nutrients in surface water from anthropogenic activi‐ ties is important for pollution control. In this study, we developed an integrated biogeochemical modeling frame‐ work for nitrogen exchanges among the atmosphere, terres‐ trial, and aquatic ecosystems. A land surface model, a ter‐ restrial nitrogen cycle model, and a riverine hydrodynamics model incorporated with a river temperature model were consolidated and driven by multiple nitrogen sources related to anthropogenic activities. We estimated the global nitrogen loading and transporting in global rivers, with con‐ sideration of seasonal variations, and the validation demon‐ strates the reliability of the proposed model. The total dis‐ solved inorganic nitrogen (DIN) flow rate is accumulated following rivers and it has high total DIN loads even in regions with low population density but large basin area, such as those at high latitudes. This study successfully improves estimation of nitrogen loading on global scale with consideration of seasonal variation. Our results show consistent trends with the observed data of DIN concentra‐ tions in global rivers, where all above variables are greatly affected by seasonal variations. The results also reflect the monthly-variant nitrogen inputs help produce closer DIN concentration estimates to observations, which will possi‐ bly stress the need for further study on seasonal variability of anthropogenic emissions.","PeriodicalId":13111,"journal":{"name":"Hydrological Research Letters","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Global integrated modeling framework of riverine dissolved inorganic nitrogen with seasonal variation\",\"authors\":\"Yizhou Huang, Daisuke Tokuda, Xudong Zhou, T. Oki\",\"doi\":\"10.3178/hrl.15.50\",\"DOIUrl\":null,\"url\":null,\"abstract\":\": Understanding patterns and seasonal variations of exces‐ sive nutrients in surface water from anthropogenic activi‐ ties is important for pollution control. In this study, we developed an integrated biogeochemical modeling frame‐ work for nitrogen exchanges among the atmosphere, terres‐ trial, and aquatic ecosystems. A land surface model, a ter‐ restrial nitrogen cycle model, and a riverine hydrodynamics model incorporated with a river temperature model were consolidated and driven by multiple nitrogen sources related to anthropogenic activities. We estimated the global nitrogen loading and transporting in global rivers, with con‐ sideration of seasonal variations, and the validation demon‐ strates the reliability of the proposed model. The total dis‐ solved inorganic nitrogen (DIN) flow rate is accumulated following rivers and it has high total DIN loads even in regions with low population density but large basin area, such as those at high latitudes. This study successfully improves estimation of nitrogen loading on global scale with consideration of seasonal variation. Our results show consistent trends with the observed data of DIN concentra‐ tions in global rivers, where all above variables are greatly affected by seasonal variations. The results also reflect the monthly-variant nitrogen inputs help produce closer DIN concentration estimates to observations, which will possi‐ bly stress the need for further study on seasonal variability of anthropogenic emissions.\",\"PeriodicalId\":13111,\"journal\":{\"name\":\"Hydrological Research Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Hydrological Research Letters\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3178/hrl.15.50\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"WATER RESOURCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Hydrological Research Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3178/hrl.15.50","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"WATER RESOURCES","Score":null,"Total":0}
Global integrated modeling framework of riverine dissolved inorganic nitrogen with seasonal variation
: Understanding patterns and seasonal variations of exces‐ sive nutrients in surface water from anthropogenic activi‐ ties is important for pollution control. In this study, we developed an integrated biogeochemical modeling frame‐ work for nitrogen exchanges among the atmosphere, terres‐ trial, and aquatic ecosystems. A land surface model, a ter‐ restrial nitrogen cycle model, and a riverine hydrodynamics model incorporated with a river temperature model were consolidated and driven by multiple nitrogen sources related to anthropogenic activities. We estimated the global nitrogen loading and transporting in global rivers, with con‐ sideration of seasonal variations, and the validation demon‐ strates the reliability of the proposed model. The total dis‐ solved inorganic nitrogen (DIN) flow rate is accumulated following rivers and it has high total DIN loads even in regions with low population density but large basin area, such as those at high latitudes. This study successfully improves estimation of nitrogen loading on global scale with consideration of seasonal variation. Our results show consistent trends with the observed data of DIN concentra‐ tions in global rivers, where all above variables are greatly affected by seasonal variations. The results also reflect the monthly-variant nitrogen inputs help produce closer DIN concentration estimates to observations, which will possi‐ bly stress the need for further study on seasonal variability of anthropogenic emissions.
期刊介绍:
Hydrological Research Letters (HRL) is an international and trans-disciplinary electronic online journal published jointly by Japan Society of Hydrology and Water Resources (JSHWR), Japanese Association of Groundwater Hydrology (JAGH), Japanese Association of Hydrological Sciences (JAHS), and Japanese Society of Physical Hydrology (JSPH), aiming at rapid exchange and outgoing of information in these fields. The purpose is to disseminate original research findings and develop debates on a wide range of investigations on hydrology and water resources to researchers, students and the public. It also publishes reviews of various fields on hydrology and water resources and other information of interest to scientists to encourage communication and utilization of the published results. The editors welcome contributions from authors throughout the world. The decision on acceptance of a submitted manuscript is made by the journal editors on the basis of suitability of subject matter to the scope of the journal, originality of the contribution, potential impacts on societies and scientific merit. Manuscripts submitted to HRL may cover all aspects of hydrology and water resources, including research on physical and biological sciences, engineering, and social and political sciences from the aspects of hydrology and water resources.