The daily water potential dynamic of main halophytes in the Alaxia desert region

The daily water potential dynamic of Populus euphratica, Tamarix ramosissima, Haloxylon ammodendron, Elaeagnus angustifolia and Populus simonii in the Alaxia desert region of Inner Mongolia were determined in this study. The results of this study showed that the shapes of leaves, plant species and plant distributing influenced the daily water potential dynamics. The water potential among shapes of leaves was columniformleafbroadleaf, and the water potential among plant species showed as T. ramosissima＜H. ammodendron＜P. simonii＜E. angustifolia＜P. euphratica. The water potential of the ovatusleaf was bigger than that of the lanceolatusleaf for P. euphratica. The water potential of T. ramosissima and H. ammodendron at the different locatiion showed in order: Yabrai region＜Jartai region＜Ejin region.