%0 Journal Article
%T Rapid measurements of CO2 flux density and water use efficiency of crop community<br>作物群体CO2通量和水分利用效率的快速测定
%A ZHU Zhilin
%A SUN Xiaomin
%A ZHANG Renhua
%A SU Hongbo
%A TANG Xinzai
%A <br>朱治林
%A 孙晓敏
%A 张仁华
%A 苏红波
%A 唐新斋
%J 应用生态学报
%D 2004
%I 
%X In this paper, Eddy Correlation (EC) method was employed to measure the latent heat and CO2 flux density and to calculate Water Use Efficiency (WUE) of winter wheat community in Yucheng district, Shandong Province in 1997. The results showed that the CO2 flux density had an obvious diurnal change, with a maximum about 1.5 mg x s(-1) x m(-2), which appeared at about 9:00-10:00 am in general. The WUE of wheat community presented a fall trend from morning to afternoon, and the CO2 flux density and WUE also had an obvious seasonal change, being lower in the early and late growth stages, and higher in the middle growth stage. The ranges of daily mean CO2 flux density and WUE were 0.2-0.9 mg x s(-1) x m(-2) and 5-20 gCO2 x kg(-1) H2O, respectively.
%K Photosynthesis of crop community
%K CO
%K 2 flux density
%K Water use efficiency
%K Winter wheat<br>作物
%K 群体
%K CO2通量
%K 水分利用效率
%K 冬小麦
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=234730077D311C7F&yid=D0E58B75BFD8E51C&vid=23CCDDCD68FFCC2F&iid=9CF7A0430CBB2DFD&sid=FE397BCF5D340F6F&eid=0D56350A4FA1FCC9&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=8&reference_num=12