河西走廊3种杨树( Populus spp.)防护林气体交换特性对环境因子的响应
薛浩, 杨杰, 杨淇越, 王玉哲, 鲁延芳, 屈鹏

Response of gas exchange characteristics to environmental factors in three Populus shelterbelts of the Hexi Corridor
Hao Xue, Jie Yang, Qiyue Yang, Yuzhe Wang, Yanfang Lu, Peng Qu
表2 3种杨树气体交换特性与环境因子相关系数
Table 2 Correlation coefficient between gas exchange characteristics and environmental factors of three Populus species
树种环境因子净光合速率Pn蒸腾速率Tr气孔导度Gs水分利用效率WUE
胡杨温度0.518**-0.017-0.0650.486**
饱和水汽压差VPD-0.791**-0.526**-0.801**0.724**
CO2浓度0.960**0.352-0.441*0.974**
新疆杨温度-0.770**-0.434*-0.643**0.417*
饱和水汽压差VPD-0.736**-0.0610.079-0.543**
CO2浓度0.915**0.838**0.688**0.904**
二白杨温度-0.724**-0.789**-0.797**0.787**
饱和水汽压差VPD-0.656**0.120-0.773**0.728**
CO2浓度0.959**0.0060.0760.954**