研究论文
周凌晞,李金龙,温玉璞,汤洁,张晓春.瓦里关山大气CO2及其δ13C本底变化[J].环境科学学报,2003,23(3):295-300
瓦里关山大气CO2及其δ13C本底变化
- Background variations of atmospheric carbon dioxide and its stable carbon isotopes at Mt.Waliguan
- 基金项目：联合国全球环境基金(GLO91G32);日本文部科学省学术振兴会JSPS博士后研究基金(PB01736);中华人民共和国国家科技部基础性工作项目(G99A07)
- 作者
- 单位
- 周凌晞
- 1. 中国气象科学研究院,北京 100081; 2. 日本国立环境研究所,筑波
- 李金龙
- 北京大学环境科学中心
- 温玉璞
- 中国气象科学研究院,北京 100081
- 汤洁
- 中国气象科学研究院,北京 100081
- 张晓春
- 青海省气象局
- 摘要：利用1991—2001年期间实测资料,分析了瓦里关全球基准站大气CO2及其δ13C本底特征,并探讨了与源汇过程的关系.结果表明,瓦里关大气CO2及其δ13C本底变化主要反映了北半球中高纬度大陆自然生态系统源汇的周期性季节特征,而海洋的作用相对较弱;大气CO2及其δ13C本底浓度范围与所处纬度带平均状况基本吻合,年平均值以及年际间涨落与全球水平的一致性反映出化石燃料燃烧等人为排放对大气圈的全球性影响;瓦里关站提供的主要温室气体本底观测资料,既能体现亚洲内陆地域特点又具有全球代表性,配合以其它相关资料,还可进一步揭示中国内陆高原大气CO2及其δ13C本底特征的成因.
- Abstract：By using the observational data during a period of 1991—2001 at Waliguan Observatory (36°17′N,100°54′E,3816?m asl),atmospheric CO2 and its δ13 C background and their potential relationship with sources and sinks were studied.Results indicated that,both CO2 and δ13 C possess long-term trend/seasonal cycle and highly correlation to each other.CO2 along with δ13 C inner-annual cycles basically indicated the terrestrial ecosystem source/sink seasonal features in the middle-high latitude of Northern Hemisphere,while the impact of ocean is inferior by comparison.The distribution of CO2 and δ13 C coincided with the results of other monitoring records in the similar latitudinal band.The inter-annual variations reflected world wide influence of fossil fuel combustion emission to the atmosphere.The major greenhouse gas observational data obtained at Waliguan Observatory reflect both the Asian mainland and global features.It can further interpret the formation of CO2 and δ13 C background in the inland plateau of China by combining with other relevant information.
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