Analysis of Status of Ornamental Plants Arrangement in Xi'an City and Future Developing Strategies

The trees and tree communities of ornamental plant arrangement and landscape in Xi'an city were analyzed according to the vast investigation of urban arterial streets, living districts, public gardens, squares and units.The following indexes were investigated: species, plants arrangement, communities' composition and natural degree.The results showed that there are altogether 43 family 85 genus 124 species woody plant used for greening work, it takes 89.86% of green flora's, herbaceous plants have 9 family 13 genus 14 species, takes 10.14% of green flora's.Native trees have 48 species and make up 67% of the greening trees, shrub have 39 species and make up 75% of the greening shrub.In the future, the choice of the varieties of greening plants and tree community should be reinforced.