Stable carbon and nitrogen isotopes of the moss Haplocladium microphyllum in an urban and a background area (SW China):The role of environmental conditions and atmospheric nitrogen deposition

CORC > 地球化学研究所 > 中国科学院地球化学研究所 > 环境地球化学国家重点实验室 > 期刊论文

	Stable carbon and nitrogen isotopes of the moss Haplocladium microphyllum in an urban and a background area (SW China):The role of environmental conditions and atmospheric nitrogen deposition
	Hong-Wei Xiao; Xue-Yan Liu; Hua-Yun Xiao; Cong-Qiang Liu; You-Yi Li
刊名	Atmospheric Environment
	2008
卷号	42 期号:21 页码:5413-5423
关键词	Atmospheric Nitrogen Deposition Biomonitoring Stable Isotope Moss Environment
英文摘要	The C and N concentrations and stable isotopes in new and old tissues of the mossHaplocladium microphyllum were investigated at Guiyang and Gongga Mountain in SW China, aiming at revealing responses of these parameters to different environmental conditions and N deposition, elucidating the effect of N deposition on C fixation and signal variations during senescence. Atmospheric N deposition could be quantified by N in new tissues, showing a level of 30.18 kg N ha⁻¹ yr⁻¹ at Guiyang and 8.46 kg N ha⁻¹ yr⁻¹ at Mt. Gongga, old tissues presented lower C and N concentrations than new tissues, but there was no significant difference between N of new and old tissues at background area with lower N deposition, and the positive effect of N supply on C fixation was observed only for urban mosses under higher N deposition. More negative δ¹³C mainly indicated the influences of anthropogenic CO₂ sources on urban mosses, and higher δ¹³C of mosses at background area was also related to higher altitude and lower temperature. More negative δ¹⁵N of mosses mainly indicated N deposition at Guiyang was dominated by NH_x–N from city wastes and sewage, while δ¹⁵N of mosses at Mt. Gongga mainly indicated little anthropogenic N pollution in background area. Besides, no significant isotopic difference was found between new and old tissues in both areas, suggesting no isotopic effect occurred during the senescence of H. microphyllum.
学科主题	环境地球化学
语种	英语
公开日期	2017-12-13
内容类型	期刊论文
源URL	[http://ir.gyig.ac.cn:8080/handle/352002/6752]
专题	地球化学研究所_环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Hong-Wei Xiao,Xue-Yan Liu,Hua-Yun Xiao,et al. Stable carbon and nitrogen isotopes of the moss Haplocladium microphyllum in an urban and a background area (SW China):The role of environmental conditions and atmospheric nitrogen deposition[J]. Atmospheric Environment,2008,42(21):5413-5423.
APA	Hong-Wei Xiao,Xue-Yan Liu,Hua-Yun Xiao,Cong-Qiang Liu,&You-Yi Li.(2008).Stable carbon and nitrogen isotopes of the moss Haplocladium microphyllum in an urban and a background area (SW China):The role of environmental conditions and atmospheric nitrogen deposition.Atmospheric Environment,42(21),5413-5423.
MLA	Hong-Wei Xiao,et al."Stable carbon and nitrogen isotopes of the moss Haplocladium microphyllum in an urban and a background area (SW China):The role of environmental conditions and atmospheric nitrogen deposition".Atmospheric Environment 42.21(2008):5413-5423.