It was showed the tissue structure is adapted to the drought condition;In the same species, the tissue structure is also obviously deferent in different ecological condition.

• 同一种类在立地条件不同的山地、滩地、人工林的中国沙棘茎组织结构各部分也有差异，人工林导管直径最大，滩地的导管直径次之，山地导管直径最小。