Seasonal fluxes and sources apportionment of dissolved inorganic nitrogen wet deposition at different land-use sites in the Three Gorges reservoir area
文献类型：期刊论文
| 作者 | Cui, Jian2,3,4; Zhang, Yuanzhu1; Yang, Fumo4 ; Chang, Yajun2,3; Du, Ke5; Chan, Andy6; Yao, Dongrui2,3
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| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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| 出版日期 | 2020-04-15 |
| 卷号 | 193页码:8 |
| 关键词 | Inorganic nitrogen Nitrogen isotope Wet deposition Source apportionment Three Gorges reservoir (TGR) |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2020.110344 |
| 通讯作者 | Cui, Jian(jcui@cnbg.net) ; Yao, Dongrui(yaodongrui@cnbg.net) |
| 英文摘要 | To identify seasonal fluxes and sources of dissolved inorganic nitrogen (DIN) wet deposition, concentrations and delta N-15 signatures of nitrate (NO3-) and ammonium (NH4+) in wet precipitation were measured at four typical land-use types in the Three Gorges reservoir (TGR) area of southwest China for a one-year period. Higher DIN fluxes were recorded in spring and summer and their total fluxes (averaged 7.58 kg N ha(-1)) were similar to the critical loads in aquatic ecosystems. Significant differences of precipitation delta N-15 were observed for NH4+-N between town and wetland sites in spring and between urban and rural sites in summer. For NO3--N, significant differences of precipitation delta N-15 were observed between town and rural sites in spring and between urban and town sites in autumn, respectively. Quantitative results of NO3--N sources showed that both biomass burning and coal combustion had higher fluxes at the urban site especially in winter (0.18 +/- 0.09 and 0.19 +/- 0.08 kg N ha(-1)), which were about three times higher than those at the town site. A similar finding was observed for soil emission and vehicle exhausts in winter. On the whole, DIN wet deposition averaged at 12.13 kg N ha(-1) yr(-1) with the urban site as the hotspot (17.50 kg N ha(-1) yr(-1)) and regional NO3--N fluxes had a seasonal pattern with minimum values in winter. The contribution to NO3--N wet deposition from biomass burning was 26.1 +/- 14.1%, which is the second dominant factor lower than coal combustion (26.5 +/- 12.6%) in the TGR area during spring and summer. Hence N emission reduction from biomass burning, coal combustion and vehicle exhausts should be strengthened especially in spring and summer to effectively manage DIN pollution for the sustainable development in TGR area. |
| 资助项目 | National Natural Science Foundation of China[41571461] ; National Natural Science Foundation of China[41977333] ; National Natural Science Foundation of China[41901155] ; Chongqing Science & Technology Commission[cstc2015jcyjBX0025] |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000521519900028 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10767]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Cui, Jian; Yao, Dongrui |
| 作者单位 | 1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China 2.Inst Bot, Nanjing 210014, Peoples R China 3.Chinese Acad Sci, Nanjing Bot Garden, Mem Sun Yat Sen, Nanjing 210014, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Ctr Atmospher Environm Res, Chongqing 400714, Peoples R China 5.Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada 6.Univ Nottingham, Fac Engn, Malaysia Campus,Jalan Broga, Semenyih 43500, Selangor Darul, Malaysia |
| 推荐引用方式 GB/T 7714 | Cui, Jian,Zhang, Yuanzhu,Yang, Fumo,et al. Seasonal fluxes and sources apportionment of dissolved inorganic nitrogen wet deposition at different land-use sites in the Three Gorges reservoir area[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2020,193:8. |
| APA | Cui, Jian.,Zhang, Yuanzhu.,Yang, Fumo.,Chang, Yajun.,Du, Ke.,...&Yao, Dongrui.(2020).Seasonal fluxes and sources apportionment of dissolved inorganic nitrogen wet deposition at different land-use sites in the Three Gorges reservoir area.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,193,8. |
| MLA | Cui, Jian,et al."Seasonal fluxes and sources apportionment of dissolved inorganic nitrogen wet deposition at different land-use sites in the Three Gorges reservoir area".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 193(2020):8. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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