Quantitative Characteristics of Xylem Cells and Variation in Vessel Element Length and Fibre Length for 13 Psammophytes AN ANATOMICAL STUDY ON XEROMORPHIC STRUCTURES OF THE PSAMMOPHYTES IN XINJIANG Effects of sand-burying on seed germination and seedling emergence of six psammophytes species Salt content in the rhizosphere of five psammophytes The Structures of 30 Species of Psammophytes and Their Adaptation to The Sandy Desert Environment In Xinjiang Analysis on the Differences in the Strategy of Physiological Regulation among Psammophytes with Different Family and Genera in Natural Habit of Desert A comparative study on diaspore weight and shape of 78 species in the Horqin Steppe Anatomical structures and ecological adaptability research of nine species of psammophytes on beach