Tissue N content and 15N natural abundance in epilithic mosses for indicating atmospheric N deposition in the Guiyang area, SW China

Liu, Xueyan; Xiao, Huayun; Liu, Cong‐Qiang; Li, Youyi; Xiao, Hao

doi:10.1016/j.apgeochem.2008.06.002

Cited by 36 publications

(24 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the moss N content (1.85%-2.79%) was similar to that of south China-for example, the Yangtze River drainage basin (1.19%-4.05% (Xiao et al 2010a)), Guiyang (1.85%-2.48% (Dong et al 2017), 0.85%-2.97% (Liu et al 2008c)), Changsha (1.80%-4.05% (Xiao et al 2010b)), and Nanchang (1.61%-4.64% (Xiao et al 2010b)). However, it was much higher than that of Europe, e.g.…”

Section: Moss N Content For Indicating Atmospheric N Depositionsupporting

confidence: 75%

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Chen

Huang

Fan

et al. 2019

Atmospheric and Oceanic Science Letters

View full text Add to dashboard Cite

Simple and inexpensive estimation of the rates and sources of atmospheric nitrogen (N) deposition is critical for its effective mitigation in a region with different land-use types. In this study, the N content and N isotopic composition (δ 15 N) of moss (Haplocladium microphyllum) tissues and precipitation at six sites with three land-use types (urban, suburban, and rural) were measured in the Yangtze River Delta. A significant linear relationship between moss N content and wet N deposition, and a consistent decrease trend for moss N content and wet N deposition from urban to suburban to rural areas were observed. More negative δ 15 N of suburban and rural mosses indicated N mainly released from agriculture and effluent, while the less negative δ 15 N of urban mosses were mainly influenced by fossil fuel combustion and traffic emissions. Although the negative moss δ 15 N indicates that reduced N dominates wet N deposition, there was no significant correlation between moss δ 15 N and the ratio of ammonium to nitrate (NH 4 + /NO 3 −). These results reveal that the moss N content and δ 15 N can be used as a complementary tool for estimating the rates and sources of wet N deposition in a region with different land-use types. 石生苔藓能指示长三角大气氮湿沉降量及其来源吗？摘要简单有效地估算大气氮沉降量及其来源至关重要。本研究同时收集长三角市区, 郊区, 农村的雨水和附近的石生细叶小羽藓，分析苔藓氮含量与氮湿沉降量以及苔藓和雨水的氮同位素 (δ 15 N)。结果显示：苔藓氮含量与氮湿沉降量显著相关，均呈市区>郊区>农村趋势。苔藓 δ 15 N表明郊区和农村大气氮湿沉降主要来自农业和人畜废水释放，而市区还受煤炭燃烧和机动车排放影响。该研究表明石生苔藓氮含量和δ 15 N能用来指示长三角大气氮湿沉降量及其来源，以弥补传统氮沉降监测数据的缺乏和费时费力的缺点。 ARTICLE HISTORY

show abstract

Section: Moss N Content For Indicating Atmospheric N Depositionsupporting

confidence: 75%

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Chen

Huang

Fan

et al. 2019

Atmospheric and Oceanic Science Letters

View full text Add to dashboard Cite

show abstract

“…Mosses receive their N exclusively via atmospheric deposition, and studies have shown that N levels in mosses can be used to quantify levels of N deposition in areas with scarce environmental monitoring [ Liu et al , 2008]. On the basis of moss tissue N contents and the linear equation between contents and N deposition, Xiao et al [2010] estimated total N deposition in the Yangtze River drainage basin.…”

Section: Resultsmentioning

confidence: 99%

Estimates of dry and wet deposition using tissue N contents and¹⁵N natural abundance in epilithic mosses in atmospheric NH_y-dominated areas

Xiao

Liu

2011

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

Measurement of dry N deposition by physical methods is time‐consuming because it is usually difficult to measure directly. In this study, an alternative approach has successfully been proposed by coupling isotopic ratios with tissue N contents of epilithic mosses. The method is to use moss N contents to quantitatively estimate total N (TN) deposition and then to use 15N natural abundance in mosses to discriminate dry and wet deposition in atmospheric NHy‐dominated areas (NHy/TN > 0.75). On the basis of the isotopic balance between atmospheric NHy and moss tissue N and the correlation between atmospheric NHy concentrations and their isotopes, both wet and dry N deposition can be estimated. By the approach, we have estimated rainwater ammonium concentrations and contribution percentage of wet deposition to total N deposition (fwet) in some areas of southern China. The results indicated that rainwater ammonium concentrations increased relative to those reported previously in most cities, owing to stronger anthropogenic activity. The fwet values estimated in most sites were found to be slightly higher than those reported, because faster transformation rates due to higher SO2 emission later in acid rain areas of southern China favored deposition in the form of wet deposition instead of dry deposition. The largest uncertainty of the approach comes from the influence of NOx in the atmosphere, and thus it cannot be used in areas where NOx deposition is high. The presented isotopic approach represents a new application of moss biomonitoring for estimating atmospheric N deposition in NHy‐dominated areas.

show abstract

“…Stable nitrogen isotope is a reliable technique for tracing different atmospheric N sources (Liu et al, ; Xiao et al, ). The nitrogen isotope of free Gly nitrogen signatures was suggested to be a good tool to identify the contributions of biomass burning and natural sources in atmospheric particles (Zhu et al, ).…”

Section: Introductionmentioning

confidence: 99%

Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5

et al. 2020

View full text Add to dashboard Cite

Amino acids is an important organic nitrogen compound class in aerosol. Its origins and transformation in the atmosphere remain poorly understood. The concentrations of free amino acids (FAAs) and combined amino acids (CAAs) and δ15N values of free and combined Glycine (Gly) in PM2.5 and main emission sources (plant, soil, and aerosol from biomass burning) were investigated from five sampling sites in Nanchang area (Jiangxi Province, China). Our results showed that the composition profiles of CAAs and FAAs were quite different from each other in PM2.5. For CAAs, percentages of individual combined amino acids were different between biomass burning sources and plant or soil sources, and we found that the composition profiles of aerosol CAAs could reflect the contribution of the main emission sources. For FAAs, a predominance of free Gly was observed in aerosol FAAs pool because atmospheric photooxidative processes could increase free Gly and decrease other reactive FAAs. This implied that the composition of aerosol FAAs could not reflect their origins. A strong correlation between δ15NF‐Gly values in aerosols or sources and the δ15NC‐Gly values in their parent CAAs was observed, indicating that the isotope effect associated with Gly transformation in aerosols may be small. Additionally, we found more positive δ15NGly in aerosols emitted by biomass burning, which was likely due to 15N‐depleted amino‐N loss from Gly molecule. The results suggested that δ15NGly values in aerosols might be used to identify biomass burning sources.

show abstract

Tissue N content and 15N natural abundance in epilithic mosses for indicating atmospheric N deposition in the Guiyang area, SW China

Cited by 36 publications

References 35 publications

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Estimates of dry and wet deposition using tissue N contents and¹⁵N natural abundance in epilithic mosses in atmospheric NH_y-dominated areas

Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5

Contact Info

Product

Resources

About

Tissue N content and 15N natural abundance in epilithic mosses for indicating atmospheric N deposition in the Guiyang area, SW China

Cited by 36 publications

References 35 publications

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Atmospheric nitrogen deposition in Yangtze River Delta: insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

Estimates of dry and wet deposition using tissue N contents and15N natural abundance in epilithic mosses in atmospheric NHy-dominated areas

Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5

Contact Info

Product

Resources

About

Estimates of dry and wet deposition using tissue N contents and¹⁵N natural abundance in epilithic mosses in atmospheric NH_y-dominated areas