Patterns and drivers of atmospheric inorganic nitrogen deposition in Northeast Asia
Copyright © 2023 Elsevier Ltd. All rights reserved..
Elevated nitrogen (N) deposition due to intensified emissions of NH3 and NOx is a global problem with profound consequences on living organisms and the environment. Although N emission rates are currently considered to be high in East Asia, reports on the current N deposition level and composition are still limited, especially in northeastern China, where official N deposition monitoring sites are unavailable. This limits our understanding of the spatio-temporal N deposition patterns and their influencing factors at regional to continental scales. Here, we used data collected mostly during 2019 at 38 sites, comprising 7 sites in northeastern China and 31 EANET (Acid Deposition Monitoring Network in East Asia) sites in middle and east Russia, Mongolia, central and southern China, South Korea and Japan to explore the spatial-seasonal variations and drivers of ammonium and nitrate deposition across the Northeast Asia. Total bulk inorganic N (TIN) deposition was 3.7-24.5 kg N ha-1 yr-1 and NH4+-N/NO3--N ratio in the TIN was 0.8-2.8 in northeastern China. The bulk/wet TIN deposition averaged 7.5 kg N ha-1 yr-1 (predominantly in the form of ammonium-N: NH4+-N/NO3--N = 1.4) over the Northeast Asia region, with the highest rates being observed in northeastern China (11.6), as well as central and southern China (10.7), followed by east Russia, South Korea and Japan (5.6), and the lowest in middle Russia and Mongolia (1.5). This regional bulk/wet TIN deposition level is about twice of the wet TIN deposition level in Europe and the United States. The TIN deposition in summer and spring was 45-467% higher than in autumn and winter. Out of the ten land uses considered, only agricultural and urban land uses significantly positively correlated with NH4+-N and NO3--N deposition rates across all monitored sites. This study suggests that the ongoing agricultural and urban expansions are likely to enhance N deposition and its associated effects across global ecosystems.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2024 2023 |
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Erschienen: |
2024 |
Enthalten in: |
Zur Gesamtaufnahme - volume:349 |
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Enthalten in: |
Journal of environmental management - 349(2023) vom: 01. Jan., Seite 119343 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Mgelwa, Abubakari Said [VerfasserIn] |
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Links: |
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Themen: |
Air Pollutants |
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Anmerkungen: |
Date Completed 30.11.2023 Date Revised 30.11.2023 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.jenvman.2023.119343 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM364101105 |
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520 | |a Elevated nitrogen (N) deposition due to intensified emissions of NH3 and NOx is a global problem with profound consequences on living organisms and the environment. Although N emission rates are currently considered to be high in East Asia, reports on the current N deposition level and composition are still limited, especially in northeastern China, where official N deposition monitoring sites are unavailable. This limits our understanding of the spatio-temporal N deposition patterns and their influencing factors at regional to continental scales. Here, we used data collected mostly during 2019 at 38 sites, comprising 7 sites in northeastern China and 31 EANET (Acid Deposition Monitoring Network in East Asia) sites in middle and east Russia, Mongolia, central and southern China, South Korea and Japan to explore the spatial-seasonal variations and drivers of ammonium and nitrate deposition across the Northeast Asia. Total bulk inorganic N (TIN) deposition was 3.7-24.5 kg N ha-1 yr-1 and NH4+-N/NO3--N ratio in the TIN was 0.8-2.8 in northeastern China. The bulk/wet TIN deposition averaged 7.5 kg N ha-1 yr-1 (predominantly in the form of ammonium-N: NH4+-N/NO3--N = 1.4) over the Northeast Asia region, with the highest rates being observed in northeastern China (11.6), as well as central and southern China (10.7), followed by east Russia, South Korea and Japan (5.6), and the lowest in middle Russia and Mongolia (1.5). This regional bulk/wet TIN deposition level is about twice of the wet TIN deposition level in Europe and the United States. The TIN deposition in summer and spring was 45-467% higher than in autumn and winter. Out of the ten land uses considered, only agricultural and urban land uses significantly positively correlated with NH4+-N and NO3--N deposition rates across all monitored sites. This study suggests that the ongoing agricultural and urban expansions are likely to enhance N deposition and its associated effects across global ecosystems | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Ammonium deposition | |
650 | 4 | |a Land uses | |
650 | 4 | |a Nitrate deposition | |
650 | 4 | |a Northeast Asia | |
650 | 4 | |a Seasonal pattern | |
650 | 4 | |a Spatial pattern | |
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700 | 1 | |a Zhu, Feifei |e verfasserin |4 aut | |
700 | 1 | |a Huang, Dan |e verfasserin |4 aut | |
700 | 1 | |a Song, Linlin |e verfasserin |4 aut | |
700 | 1 | |a Wang, Yingying |e verfasserin |4 aut | |
700 | 1 | |a Gurmesa, Geshere Abdisa |e verfasserin |4 aut | |
700 | 1 | |a Wang, Ang |e verfasserin |4 aut | |
700 | 1 | |a Liu, Miao |e verfasserin |4 aut | |
700 | 1 | |a Huang, Shaonan |e verfasserin |4 aut | |
700 | 1 | |a Qiu, Qingyan |e verfasserin |4 aut | |
700 | 1 | |a Sase, Hiroyuki |e verfasserin |4 aut | |
700 | 1 | |a Zhu, Weixing |e verfasserin |4 aut | |
700 | 1 | |a Fang, Yunting |e verfasserin |4 aut | |
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