Garden Features in Tang Dynasty and Urban Planning and Construction of Xi'an

The garden features in Tang Dynasty which occupies an important historical status in Chinese garden history were described from the aspects of their cultural,ecological and planning characteristics,so as to trace the development of the garden culture in Tang Dynasty,based on which the relevant problems in the urban planning and construction of Xi'an were discussed and some countermeasures and suggestions about the cultural,ecological and planning construction in the preservation of this ancient city were put forward.