IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Effects of anthropogenic nitrogen discharge on dissolved inorganic nitrogen transport in global rivers
Shuang Liu1,2; Zhenghui Xie1,3; Yujin Zeng4; Bin Liu1,3; Ruichao Li1,3; Yan Wang1,3; Longhuan Wang1,3; Peihua Qin1; Binghao Jia1; Jinbo Xie1
2019
Source PublicationGLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
Volume25Issue:4Pages:1493-1513
SubtypeArticle
Contribution Rank2
AbstractExcess nutrients from fertilizer application, pollution discharge, and water regulations outflow through rivers from lands to oceans, seriously impacting coastal ecosystems. A reasonable representation of these processes in land surface models and River Transport Models (RTMs) is very important for understanding human-environment interactions. In this study, the schemes of riverine dissolved inorganic nitrogen (DIN) transport and human activities including nitrogen discharge and water regulation, were synchronously incorporated into a land surface model coupled with a RTM. The effects of anthropogenic nitrogen discharge on the DIN transport in rivers were studied based on simulations of the period 1991-2010 throughout the entire world, conducted using the developed model, which had a spatial resolution of about 1 degrees for land processes and 0.5 degrees for river transport, and data on fertilizer application, point source pollution, and water use. Our results showed that rivers in western Europe and eastern China were seriously polluted, on average, at a rate of 5,000-15,000 tons per year. In the Yangtze River Basin, the amount of point source pollution in 2010 was about four times more than that in 1991, while the amount of fertilizer used in 2010 doubled, which resulted in the increased riverine DIN levels. Further comparisons suggested that the riverine DIN in the USA was affected primarily by nitrogen fertilizer use, the changes in DIN flow rate in European rivers was dominated by point source pollution, and rivers in China were seriously polluted by both the two pollution sources. The total anthropogenic impact on the DIN exported to the Pacific Ocean has increased from 10% to 30%, more significantly than other oceans. In general, our results indicated that incorporating the schemes of nitrogen transport and human activities into land surface models could be an effective way to monitor global river water quality and diagnose the performance of the land surface modeling.
Keywordearth system model global biogeochemical cycle human activities land surface model riverine nitrogen transport water pollution
DOI10.1111/gcb.14570
Indexed BySCI
Language英语
WOS IDWOS:000461817500022
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25299
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorZhenghui Xie
Affiliation1.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China;
2.Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China;
3.University of Chinese Academy of Sciences, Beijing, China;
4.Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, New Jersey
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Shuang Liu,Zhenghui Xie,Yujin Zeng,et al. Effects of anthropogenic nitrogen discharge on dissolved inorganic nitrogen transport in global rivers[J]. GLOBAL CHANGE BIOLOGY,2019,25(4):1493-1513.
APA Shuang Liu.,Zhenghui Xie.,Yujin Zeng.,Bin Liu.,Ruichao Li.,...&Jinbo Xie.(2019).Effects of anthropogenic nitrogen discharge on dissolved inorganic nitrogen transport in global rivers.GLOBAL CHANGE BIOLOGY,25(4),1493-1513.
MLA Shuang Liu,et al."Effects of anthropogenic nitrogen discharge on dissolved inorganic nitrogen transport in global rivers".GLOBAL CHANGE BIOLOGY 25.4(2019):1493-1513.
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