%0 Journal Article
%T Quantitative Estimation Source of Urban Atmospheric CO2 by Carbon Isotope Composition<br>碳同位素比技术定量估算城市大气CO2的来源
%A LIU Wei
%A WEI Nan-nan
%A WANG Guang-hu
%A YAO Jian
%A ZENG You-shi
%A FAN Xue-bo
%A GENG Yan-hong
%A LI Yan
%A <br>刘卫
%A 位楠楠
%A 王广华
%A 姚剑
%A 曾友石
%A 范雪波
%A 耿彦红
%A 李燕
%J 环境科学
%D 2012
%I 
%X To effectively reduce urban carbon emissions and verify the effectiveness of currently project for urban carbon emission reduction, quantitative estimation sources of urban atmospheric CO2 correctly is necessary. Since little fractionation of carbon isotope exists in the transportation from pollution sources to the receptor, the carbon isotope composition can be used for source apportionment. In the present study, a method was established to quantitatively estimate the source of urban atmospheric CO2 by the carbon isotope composition. Both diurnal and height variations of concentrations of CO2 derived from biomass, vehicle exhaust and coal burning were further determined for atmospheric CO2 in Jiading district of Shanghai. Biomass-derived CO2 accounts for the largest portion of atmospheric CO2. The concentrations of CO2 derived from the coal burning are larger in the night-time (00:00, 04:00 and 20:00) than in the daytime (08:00, 12:00 and 16:00), and increase with the increase of height. Those derived from the vehicle exhaust decrease with the height increase. The diurnal and height variations of sources reflect the emission and transport characteristics of atmospheric CO2 in Jiading district of Shanghai.
%K 城市大气CO2
%K δ13C
%K Δ14C
%K 来源
%K 时空分布
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=D7EC41DBAB8A1963295DCFE3B215F3E9&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=8F39F7FDA07C2566&eid=AE9D5375B9B2D7F2&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=28