Talking On The Construction Of The Urban Forest In Xi'an

With the development of social economy, the constant enlargement of the city size in Xi'an, the urbanization is fast growing. But meanwhile, the high-speed urbanization process brought a series of negative effects, for instance: Urban population increases sharply, the urban environment is seriously polluted, city greening behind in economic development of the city, for example have restricted the sustainable development of the city of Xi'an. And improve and regulate the urban local conditions in the forest of city; Water and soil conservation and preventing and reducing air pollution; save the energy and relieve ecological functions such as the greenhouse effects and urban tropical island effect etc., so the construction of the forest of city of Xi'an has been already extremely urgent.The range of the urban forest where this paper studies mainly means the inside different kinds of urban green land of urban area of Xi'an, including: public green land, subsidiary green land, the green land of inhabited region, the systematic green land of road, the green land of other types.The element task of the construction of the urban forest is choice of selecting greening trees. Choose the urban forest varieties of greening trees to guarantee the forest foundation of giving fully play to many kinds of functions of the city scientifically. This text should follow the principle and forest varieties of trees choice method while putting forward the forest varieties of trees choice of city of Xi'an. Research this according to urban forest goal of construction, field investigation Xi'an city greening current application situations of varieties of trees, the actual conditions of combining Xi'an are carried on assignment and appraised to all varieties of trees appearing in different green land type, comprehensive assessment result, through all sorts of greening trees using in Xi'an and the state growth, ecological function , ornamental value ,etc. roundly analyze,according to geographical climate characteristic whose Xi'an is, combine relevant materials, choose , appear , can utilize on Xi'an urban forest green land systematic varieties of trees of construction, recommend the varieties of trees that are suitable for employing especially to the different kinds of green land.The greening plant disposes the main content that is forest construction of the city. This text put forward Xi'an city forest principle and different kinds of urban forest green land systematic plant dispose method,mode. Prove the forest construction of the city should rely mainly on arbor,is worthy of planting and shrub,vine,the wooden varieties of trees rationally, form arbor,shrub,vine,grass structure that combine together.