作物群体CO通量和水分利用效率的快速测定

被引：22

作者：

朱治林

孙晓敏

张仁华

苏红波

唐新斋

机构：

[1] 中国科学院地理科学与资源研究所

[2] 中国科学院地理科学与资源研究所北京

来源：

应用生态学报 | 2004年 / 09期

基金：

中国科学院知识创新工程重大项目;

关键词：

Photosynthesis of crop community; CO 2 flux density; Water use efficiency; Winter wheat;

D O I：

10.13287/j.1001-9332.2004.0352

中图分类号：

S314 [作物生态学];

学科分类号：

071012 ; 0713 ;

摘要：

In this paper,Eddy Correlation (EC) method was employed to measure the latent heat and CO 2 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 CO 2 flux density had an obvious diurnal change,with a maximum about1.5 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 CO 2 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 CO 2 flux density and WUE were 0.2～0.9 mg·s -1 ·m -2 and 5～20 gCO 2·kg -1 H 2O,respectively.

引用

页码：1684 / 1686

页数：3