The Study On Green Space System’s Spatial Pattern And Service Function Of The Center District Of Xi’an

The urban green space system is the main body of the urban natural productivity. It is an important safeguard for the urban sustainable development. Urban green space system planning is very important for the ecological environment of city as well as resident’s living standard. Therefore the scientific appraisal to the urban green space system is very essential. In recent years, along with the application of landscape ecology in urban green space system planning, it sets a higher request to the urban green space system planning. Also it has provided the important theory basis for the urban green space system’s development.This paper uses the basic principle of landscape ecology, has researched the space pattern of Xi’an’s green space system, the accessibility of green space and the ecology service function.This paper has analyzed the Xi’an’s ETM image, and has get information of Xi’an’s green space through the surveillance classification. The result indicates: the rate of green areas coverage is about 29.4%, the green space area is 356.4km2.The research for the Xi’an’s green space pattern indicates: The Baqiao District and the Yanta District’s landscape multiple indices are high. The Beilin District’s landscape multiple indices are lowest, and the green space area are also few. The Xincheng District’s stave degree is highest. The whole spatial pattern of Xi’an’s green space system is more reasonable. But, The Xincheng District and Beilin District’s green space area are few. It needs to enlarge the construction of the green space.The research for the accessibility of public green of Xi’an’s indicates: the area of walking 0 to 5 minutes may arrive at the public green, it accounts for the main city total area about 4.61%. The area of walking 0 to 15 minutes may arrive at the public green, it accounts for the main city total area about 24%. The area of walking 0 to 30 minutes may arrive at the public green, it accounts for the main city total area about 52.55%. If the resident go out by car, almost whole city resident spend 0 minutes to 30 minutes to arrive at the public green area. The whole, the accessibility of Xi’an’s public green is good.This paper has researched the Xi’an’s green space’s ecology service function and carried on the appraisal with the value quantity’s assessment method. The results Indicates: the water source self-control’s value quantity of the ecology service function is highest, it costs 11,933 ten thousands RMB. The biodiversity protection function’s total value quantity is 10,928 ten thousands RMB. The climate control function’s total value quantity is 10576 ten thousands RMB. The gas conditioner function’s total value quantity is 9,062 ten thousands RMB. The food production function total value is 6,647 ten thousands RMB. The rest and recreation function total value quantity is 2,383 ten thousands RMB.Overall, Xi’an’s green space system is better,and it is able to better use of natural conditions and historical sites. The Green Space System provides the residents with a beautiful environment of urban green space.