%0 Journal Article
%T Uptake CO2 from Air and Accumulation of C in Chinese Cabbage<br>青菜对14CO2的吸收和积累动态
%A SHI Jian-jun
%A LIN Ming-ming
%A <br>史建君
%A 林明明
%J 环境科学
%D 2007
%I 
%X Uptake1 4CO2 from air and accumulation of 14C in the Chinese cabbage were studied by using the isotope-tracer techniques in order to get a better understanding of the environmental behavior of14CO2.The results show that the CO2,which was uptaken from the air by the leaf photosynthesis,would be sent to the other part of the Chinese cabbage and form a accumulating trend.The specific activity of 14C in every tissue increases linearly with time,and the increasing rate is in the range of 95.3~270.2 Bq/(g.d).The order of rate in tissues is as below: cabbage heart > leaf blade > leaf stalk > basal plate > root.The Chinese cabbage has an intensive concentration of14CO2,and the concentration factor values increase rapidly with time.The concentration factor values in the cabbage heart reach the highest level(156.4 in 48 days) and following with the leaf blade(135.6 in 48 days).The specific activity in each part of the Chinese cabbage also increases with the introduction times of the 14CO2.Regression analysis has proved that the specific activity(C) of every part is positively correlated to the introducing times(N).Owing to its high accumulation of 14CO2,Chinese cabbage can be used as the indicator plant in the supervisor of14CO2 air pollution.
%K 14CO2
%K Chinese cabbage
%K uptake
%K accumulation<br>14CO2
%K 青菜
%K 吸收
%K 积累
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=15BD448442B396A34B401F929B29072A&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=6C44E62EE1A19DA5&eid=B62D621C3785DBB4&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=12