Park Green Space Pattern And Optimization Based On Accessibility,Ecological Services Assessment In Shenyang Ctiy

Urban green space is the important environmental factors for the sustainable development of cities,based on the scientific and rational urban green space landscape pattern and ecological benefit of planting mode can promote the comprehensive benefits of the urban green space,the urban land layout in the healthy and sustainable development of human settlement environment.Based on the case study of shenyang city within on urban green space,as urban green space landscape pattern dynamic change trend-based on the ecological benefit of planting pattern simulation study,the ideal design as the research train of thought,from the remote sensing(RS)data,statistics,survey and field survey survey to obtain the original data,such as use of geographic information system(GIS)spatial analysis method,in shenyang city from 2008 to 2014 in the second article analyzes the characteristics of green space landscape pattern change;On this basis,using the method of buffer was simulated based on the accessibility of urban green space landscape pattern optimization layout;Determination of 22 kinds of common greening tree species in shenyang in the carbon oxygen humidification,cooling,dust the effect of three aspects,the research based on three kinds of ecological benefit in a different environment of plant cultivation mode;Green space landscape pattern of shenyang I idealized design based on accessibility,both for the green plant aesthetic ideal plant based on ecological benefits,simulation to solve the lack of cohesion between planning and design and detailed design.Through research for shenyang urban green space construction,and provide decision support for urban sustainable development.In this paper,the following research results:(1)From the perspective of characteristics of land use change from 2008 to 2014,urban land use change characteristics of greatly reduced continuously for industrial land,residential land and green land area increased;From the point of urban green space variation characteristics,and for industrial land use of two types of landscape is an important contribution to the urban green space into components;Rapid development in the city,the renewal of the inner cities to promote the construction of the urban green space,on the edge of the city,the development of green space is at the cost of a large amount of farmland.Green space landscape characteristics show the slowing of the early stage of the fragmentation degree,the late,accessibility analysis shows that urban green space accessibility showed a trend of increase,but the overall level is low,the evaluation of urban green space network connection degree,the analysis shows that in the study area green space network connection degree levels showed a trend of continuous improvement.(2)Through analyzing the characteristic of city park green space consumption,urban green space optimization goal set to improve the level of city park green space accessibility of 500 m residents of the service quantity.Using the method of population center of gravity model and buffer to optimize city park green space layout and the optimization results were evaluated.The results show that the optimal solution of 93.5%of the population can achieve out 500 m visible green space,by optimizing the achieved with less green space area play a bigger benefit.(3)through to the shenyang 22 kinds of commonly used carbon sequestration of afforestation trees release oxygen humidification,cooling,dust three ecological benefit of quantitative measurement,the comprehensive comparative analysis,it is concluded that comprehensive ecological benefit and stability of the best 11 kinds of tree species,the following order:Populus alba var.pyramidalis Bunge(T4)>Malus micromalus(T9) >Lonicera maackii(T18)>Syringa oblate(T14)>Forsythi suspense(T15)>Weigel florida(T21)>Catalpa ovata(T11)>Amygdalus triloba(T19)>Syringa reticulate var.amurensis(T7)>Prunus maackii(T10)>Cornus alba(T17).(4)To follow the shenyang city at present and the future of green space construction management measures,as well as the social demand for regional ecological environment protection,design based on the accessibility of shenyang I ideal pattern plans and green space landscape pattern based on ecological aesthetics of give attention to two or morethings configuration of planting,in order to solve the problem of green space planning and design with specific design,for the shenyang urban green space construction and urban sustainable development provides many valuable decision-making information.