| Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and lower canopies as an indicator of atmospheric nitrogen sources | |
| Hua-Yun Xiao; Liang-Hong Wu; Ren-Guo Zhu; Yan-Li Wang; Cong-Qiang Liu | |
| 2011 | |
| 发表期刊 | Environmental Pollution
 |
| 卷号 | 159期号:2页码:363-367 |
| 摘要 | Nitrogen isotopic composition of new, middle-aged and old camphor leaves in upper and lower canopies has been determined in a living area, near a motorway and near an industrial area (Jiangan Chemical Fertilizer Plant). We found that at sites near roads, more positive δ15N values were observed in the camphor leaves, especially in old leaves of upper canopies, and ∆δ15N = δ15Nupper − δ15Nlower > 0, while those near the industrial area had more negative δ15N values and ∆δ15N < 0. These could be explained by two isotopically different atmospheric N sources: greater uptake from isotopically heavy pools of atmospheric NOx by old leaves in upper canopies at sites adjacent to roads, and greater uptake of 15N-depleted NHy in atmospheric deposition by leaves at sites near the industrial area. This study presents novel evidence that 15N natural abundance of camphor leaves can be used as a robust indicator of atmospheric N sources. |
| 关键词 | Δ15n Atmospheric Nitrogen Soil Nitrogen Age Canopy Leaf Camphor |
| 学科领域 | 环境地球化学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.gyig.ac.cn/handle/352002/7014 |
| 专题 | 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 | Hua-Yun Xiao,Liang-Hong Wu,Ren-Guo Zhu,et al. Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and lower canopies as an indicator of atmospheric nitrogen sources[J]. Environmental Pollution,2011,159(2):363-367. |
| APA | Hua-Yun Xiao,Liang-Hong Wu,Ren-Guo Zhu,Yan-Li Wang,&Cong-Qiang Liu.(2011).Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and lower canopies as an indicator of atmospheric nitrogen sources.Environmental Pollution,159(2),363-367. |
| MLA | Hua-Yun Xiao,et al."Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and lower canopies as an indicator of atmospheric nitrogen sources".Environmental Pollution 159.2(2011):363-367. |
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