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1 3种杨树植株特征
Table 1 The plant characteristics of three Populus species
树种

树高

/m

胸径

/cm

水势/MPa
凌晨Ψpd正午Ψmid
胡杨9.54±0.25c22.15±0.42c-3.00±0.07b-3.16±0.09b
新疆杨12.48±0.19a28.65±0.55a-0.49±0.01a-1.72±0.13a
二白杨10.67±0.28b23.75±0.27b-0.41±0.03a-1.82±0.12a