Nitrogen wet deposition in the Three Gorges Reservoir area: Characteristics, fluxes, and contributions to the aquatic environment

doi:10.1016/j.scitotenv.2020.140309

	Nitrogen wet deposition in the Three Gorges Reservoir area: Characteristics, fluxes, and contributions to the aquatic environment
	Zhang, Liuyi 2,3; Tian, Mi 4; Peng, Chao 3; Fu, Chuan 2; Li, Tingzhen 2; Chen, Yang 3; Qiu, Yang 5; Huang, Yimin 2; Wang, Huanbo 3,4; Li, Zhe 3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-10-10
卷号	738 页码:10
关键词	Nitrogen deposition Spatial distribution Critical load Three Gorges Reservoir
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.140309
通讯作者	Li, Tingzhen(litingzhen@163.com) ; Yang, Fumo(fmyang@scu.edu.cn)
英文摘要	Measurements of nitrate nitrogen (NO3--N), ammonia nitrogen (NH4+-N), and dissolved organic nitrogen (DON) in precipitation were conducted at six different sites in the hinterland of the Three Gorges Reservoir (TGR) area fromJanuary 2016 to December 2017. The characteristics and the sources of nitrogen (N) specieswere identified. N flux of wet deposition in the hinterland of the TGR area were 13.56 +/- 2.95 kg N ha(-1) yr(-1), of which the proportions of NO3--N, NH4+-N and DON were 60.9%, 25.1% and 14.0%, respectively. N flux in urban area was significantly higher than those in suburban, agricultural, andwetland areas. Industrial activities, biomass burning, and secondary transformation were the main contributors of N in urban area. In agricultural area, biomass burning, crustal, and manure were main sources of N. In suburban area, mixed emissions from industry, agriculture, and crustal sources were primary contributors of N. For wetlands, the major contributions were from industrial sector and biomass burning. Additional, analysis of regional distribution of dissolvedN deposition in the TGR area was conducted by combining current study data and previously published data between 2000 and 2017. N flux of wet deposition in the entire TGR area ranged from 12.17 to 51.93 kg N ha(-1) yr(-1), with an average of 26.81 kg N ha(-1) yr(-1). Regional N distribution was greatest in the tail region, followed by the head region, and then the hinterland in the TGR area. The amount of N entering the TGR directly through atmospheric wet deposition was 2906 t yr(-1), accounting for 2.1% of the total N inputs. N load from wet deposition had exceeded the critical loads from that of the water, forest, and even some farmland ecosystems in the TGR area. Decreasing NH3 emissions from agricultural activities is the key to alleviate the regional N deposition. (c) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[31670467] ; Science and Technology Commission of Chongqing Municipality[cstc2018jcyjAX0236] ; West Action Plan of the Chinese Academy of Sciences[KZCX2-XB3-14] ; open fund of CAS Key Laboratory of Reservoir Aquatic Environment ; Chongqing Municipal Education Commission Project
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000559768800015
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11625]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Li, Tingzhen; Yang, Fumo
作者单位	1.Sichuan Univ, Dept Environm Sci & Engn, Natl Engn Res Ctr Flue Gas Desulfurizat, Chengdu 610065, Peoples R China 2.Chongqing Three Gorges Univ, Chongqing Key Lab Water Environm Evolut & Pollut, Wanzhou 404000, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China 4.Chongqing Univ, Coll Environm & Ecol, Chongqing 400044, Peoples R China 5.Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Liuyi,Tian, Mi,Peng, Chao,et al. Nitrogen wet deposition in the Three Gorges Reservoir area: Characteristics, fluxes, and contributions to the aquatic environment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,738:10.
APA	Zhang, Liuyi.,Tian, Mi.,Peng, Chao.,Fu, Chuan.,Li, Tingzhen.,...&Yang, Fumo.(2020).Nitrogen wet deposition in the Three Gorges Reservoir area: Characteristics, fluxes, and contributions to the aquatic environment.SCIENCE OF THE TOTAL ENVIRONMENT,738,10.
MLA	Zhang, Liuyi,et al."Nitrogen wet deposition in the Three Gorges Reservoir area: Characteristics, fluxes, and contributions to the aquatic environment".SCIENCE OF THE TOTAL ENVIRONMENT 738(2020):10.