Imbalanced nitrogen and phosphorus deposition in the urban and forest environments in southeast Tibet

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Imbalanced nitrogen and phosphorus deposition in the urban and forest environments in southeast Tibet
	Dore, Anthony J.; Wang, Wei; Liu, Xuejun; Xu, Jin; Xu, Wen
刊名	ATMOSPHERIC POLLUTION RESEARCH
	2018-07-01
卷号	9 期号:4 页码:774-782
关键词	Nitrogen deposition Phosphorus deposition N/P ratio Dissolved organic nitrogen deposition Tibet plateau
ISSN号	1309-1042
文献子类	Article
英文摘要	In recent decades, high levels of anthropogenic emissions in China have dramatically increased nitrogen (N) deposition and may lead to an imbalance of atmospheric N and phosphorus (P) inputs in terrestrial ecosystems. However, currently the status of N and P deposition in southeast Tibet is poorly understood. Here, we investigated spatial and monthly patterns of N and P bulk deposition based on measurements of dissolved inorganic N (DIN, including ammonium N and nitrate N) and dissolved organic N (DON) and total dissolved P (TDP) in precipitation from March to October 2017. Measurements were made at an urban site in Nyingchi city (NC) and at a forest site in Sejila Mountain (SJL). Over the study period, monthly total dissolved N (the sum of DIN and DON) deposition fluxes totalled 4.6 and 3.6 kg N ha(-1) at SJL and NC, respectively, of which dissolved organic nitrogen accounted for 35 and 38%. Monthly averages showed an increasing trend from March to June, and then a decrease during last two months (September and October). At both two sites, the ratios of ammonium to nitrate N in bulk deposition are greater than 1, indicating that reduced N mainly from agricultural sources dominated N deposition in study area. Monthly TDP deposition fluxes totalled 0.68 and 0.58 kg P ha(-1) at SJL and NC, respectively, both of which showed an increasing trend from March to May and a decreasing trend from July to October. The N/P ratio was 6.1 and 6.8 at NC and SJL, respectively.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40573]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Dore, Anthony J.,Wang, Wei,Liu, Xuejun,et al. Imbalanced nitrogen and phosphorus deposition in the urban and forest environments in southeast Tibet[J]. ATMOSPHERIC POLLUTION RESEARCH,2018,9(4):774-782.
APA	Dore, Anthony J.,Wang, Wei,Liu, Xuejun,Xu, Jin,&Xu, Wen.(2018).Imbalanced nitrogen and phosphorus deposition in the urban and forest environments in southeast Tibet.ATMOSPHERIC POLLUTION RESEARCH,9(4),774-782.
MLA	Dore, Anthony J.,et al."Imbalanced nitrogen and phosphorus deposition in the urban and forest environments in southeast Tibet".ATMOSPHERIC POLLUTION RESEARCH 9.4(2018):774-782.