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
图3 3种杨树气体交换特性与VPD的关系
Fig.3 Relationship between gas exchange characteristics and VPD of three Populus species