GYIG OpenIR  > 环境地球化学国家重点实验室  > 期刊论文
Total N content and delta N-15 signatures in moss tissue for indicating varying atmospheric nitrogen deposition in Guizhou Province, China
Linglu Qu; Huayun Xiao; Hui Guan; Zhongyi Zhang; Yu Xu
2016
发表期刊Atmospheric Environment
卷号142期号:1页码:145-151
摘要
Unsurprisingly, the amount of reactive nitrogen circulating annually on land has been doubled because of increasing anthropogenic activities. Exceedingly large amounts of reactive nitrogen (N-r) are likely to disrupt N dynamics and negatively impact the environment and human health. Guizhou Province, a major energy-producing province in southwest China, is suffering from serious long-term acid deposition. However, little work has been done to quantify the levels of atmospheric N deposition in this province, in which some ecologically vulnerable areas have resulted from rocky desertification. In this study, tissue N contents and delta N-15 signatures in 109 epilithic mosses were analyzed by the ordinary kriging (OK) interpolation technique to determine atmospheric N deposition. Moss N content (136-2.65%) showed a significant decrease from west to east, indicating that the spatial variance of TN deposition was the same as that of moss N content, with an average of 27.74 kg N ha(-1) yr(-1). Moss delta N-15 ranged from -5.89 parts per thousand to -0.72 parts per thousand and showed an opposite spatial variance compared with moss N contents. Negative delta N-15 indicated that the main sources for N deposition were urban sewage and agricultural NH3. According to Moss delta N-15 values, it could be concluded that NH4+-N and NO3--N were the main components of wet deposition, accounting for 52% and 44% of TN, respectively. The deposition fluxes were 14.49 kg N ha(-1) yr(-1) and 12.16 kg N ha(-1) yr(-1), respectively. Although the emission flux of NO3--N far exceeded that of NH4+-N, the amount of NH4+-N deposited on land was larger than that of NO3--N. N deposition in 99.6% of the province exceeded the critical load for terrestrial ecosystems. High N deposition is the main environmental problem facing Guizhou Province, and recommendations regarding regulatory strategies for mitigating atmospheric N pollution are urgently needed.
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/352002/6539
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
Linglu Qu,Huayun Xiao,Hui Guan,et al. Total N content and delta N-15 signatures in moss tissue for indicating varying atmospheric nitrogen deposition in Guizhou Province, China[J]. Atmospheric Environment,2016,142(1):145-151.
APA Linglu Qu,Huayun Xiao,Hui Guan,Zhongyi Zhang,&Yu Xu.(2016).Total N content and delta N-15 signatures in moss tissue for indicating varying atmospheric nitrogen deposition in Guizhou Province, China.Atmospheric Environment,142(1),145-151.
MLA Linglu Qu,et al."Total N content and delta N-15 signatures in moss tissue for indicating varying atmospheric nitrogen deposition in Guizhou Province, China".Atmospheric Environment 142.1(2016):145-151.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Total N content and (961KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Linglu Qu]的文章
[Huayun Xiao]的文章
[Hui Guan]的文章
百度学术
百度学术中相似的文章
[Linglu Qu]的文章
[Huayun Xiao]的文章
[Hui Guan]的文章
必应学术
必应学术中相似的文章
[Linglu Qu]的文章
[Huayun Xiao]的文章
[Hui Guan]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Total N content and d15N signatures in moss tissue for indicating.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。