Atmospheric transport of urban-derived NH(x): Evidence from nitrogen concentration and delta(15)N in epilithic mosses at Guiyang, SW China
文献类型：期刊论文
| 作者 | Cong-Qiang Liu; Hong-Wei Xiao; You-Yi Li; Hua-Yun Xiao; Xue-Yan Liu |
| 刊名 | Environmental Pollution》 , 2008 , 156 (3) :715-22
 |
| 出版日期 | 2008 |
| 卷号 | 156期号:3页码:715-722 |
| 关键词 | Atmospheric n Deposition Nitrogen Isotope Moss Ammonium City Area Nhx Nox |
| 英文摘要 | Nitrogen concentration and δ15N in 175 epilithic moss samples were investigated along four directions from urban to rural sites in Guiyang, SW China. The spatial variations of moss N concentration and δ15N revealed that atmospheric N deposition is dominated by NHx-N from two major sources (urban sewage NH3 and agricultural NH3), the deposition of urban-derived NHx followed a point source pattern characterized by an exponential decline with distance from the urban center, while the agricultural-derived NHx was shown to be a non-point source. The relationship between moss N concentration and distance (y = 1.5e−0.13x + 1.26) indicated that the maximum transporting distance of urban-derived NHx averaged 41 km from the urban center, and it could be determined from the relationship between moss δ15N and distance [y = 2.54 ln(x) − 12.227] that urban-derived NHx was proportionally lower than agricultural-derived NHx in N deposition at sites beyond 17.2 km from the urban center. Consequently, the variation of urban-derived NHx with distance from the urban center could be modeled asy = 56.272e−0.116x − 0.481 in the Guiyang area. |
| 学科主题 | 环境地球化学 |
| 语种 | 英语 |
| 公开日期 | 2017-12-13 |
| 源URL | [http://ir.gyig.ac.cn:8080/handle/352002/6751]  |
| 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 | Cong-Qiang Liu,Hong-Wei Xiao,You-Yi Li,et al. Atmospheric transport of urban-derived NH(x): Evidence from nitrogen concentration and delta(15)N in epilithic mosses at Guiyang, SW China[J]. Environmental Pollution》 , 2008 , 156 (3) :715-22,2008,156(3):715-722. |
| APA | Cong-Qiang Liu,Hong-Wei Xiao,You-Yi Li,Hua-Yun Xiao,&Xue-Yan Liu.(2008).Atmospheric transport of urban-derived NH(x): Evidence from nitrogen concentration and delta(15)N in epilithic mosses at Guiyang, SW China.Environmental Pollution》 , 2008 , 156 (3) :715-22,156(3),715-722. |
| MLA | Cong-Qiang Liu,et al."Atmospheric transport of urban-derived NH(x): Evidence from nitrogen concentration and delta(15)N in epilithic mosses at Guiyang, SW China".Environmental Pollution》 , 2008 , 156 (3) :715-22 156.3(2008):715-722. |
入库方式： OAI收割
来源：地球化学研究所
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