作物群体CO2通量和水分利用效率的快速测定

编号 zgly0000357189

文献类型 期刊论文

文献题名 作物群体CO2通量和水分利用效率的快速测定

学科分类 220.1060;森林生态学

作者 朱治林  孙晓敏  张仁华  苏红波  唐新斋 

作者单位 中国科学院地理科学与资源研究所 

母体文献 应用生态学报 

年卷期 2004,15(9)

页码 1684-1686

年份 2004 

分类号 S181 

关键词 作物  群体  CO2通量  水分利用效率  冬小麦 

文摘内容 In this paper, Eddy Correlation (EC) method was employed to measure the latent heat and CO2 flux density and to calculate Water Use Efficiency (WISE) 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 aboutl. 5 mg·s^-1·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·s^-1·m^-2 and 5 - 20 gCO2·kg^-1 1H2O, respectively。