| The World Health Organization sees urbanization as“the main public health challenge of the 21st century”.Rapid urbanization brings new health problems,and how to build a sustainable and healthy environment is an urgent problem to be solved.With the acceleration of urbanization,obesity and mental illness began to spread,becoming a"plague"in the new era,seriously affecting the health of the population.With the intersection and deepening of research in various disciplines,it is found that scientific and rational urban land use and spatial planning have a positive effect on the health of the population.The impact of human settlements on the health of the population has gradually been taken seriously,and the health value of urban park green space has been affirmed by more and more research.Urban park green space,as a natural plaque in the urban environment,regulates the urban ecological environment,provides residents with places for leisure and sports,plays various roles such as promoting physical activity,relieving mental stress,and promoting social interaction,and can promote the physical health of urban residents.And mental health is a type of urban public service facilities that contributes to improving the health and well-being of urban residents.However,when conducting urban planning in China,the traditional method is to delineate the scale of urban park green space according to the indicators in the norm,and lacks a systematic and scientific argumentation method for its layout.It constantly reflects the green coverage of urban parks in actual use.The spatial layout problem,such as not high,and the location of the crowded area does not match,which affects the efficiency of urban park green space service to the crowd.This study aims to focus on the spatial layout of urban parks,combined with the research on green space and population health,using GIS spatial analysis technology,from urban park green space health services and ecological services to Kunming Wuhua.The layout of the urban park green space in the district is evaluated,which proposes feasible suggestions for the future urban park green space construction in Wuhua District.The main research contents and results are as follows:This study takes the urban park green space of Wuhua District,Kunming City,Yunnan Province as the research object,and uses ArcGIS to establish a database to divide the urban park green space health service radius into 0-400m,400-800m,800-1600m,and 1600m.From the perspective of accessibility,the network analysis method is used to evaluate the spatial layout of urban park green space.The evaluation results are divided into optimal service area,sub-optimal service area,general service area and lack of service area to construct Wuhua District City of Kunming.Park Greenland Health Service Scope Map.At the same time,through the oxygen balance method,the existing urban park green space ecological service capacity is evaluated,and then the comprehensive analysis of Wuhua District urban park green space layout is reasonable and proposes corresponding optimization suggestions.The main research conclusions are:(1)Kunming Wuhua District Urban Park Green Space Health Service coverage is not good and needs further optimization.The statistical analysis of urban park green space evaluation in the study area shows that the optimal service area accounts for 3.8km~2,and the service residential area is 65;the sub-optimal service area accounts for 5.88km~2,and the service residential area is 100;the general service area accounts for 16.78km~2,and the service residential area 206;in the absence of service areas,there are still 376 residential communities not covered by urban park green space services.(2)According to the statistics of the residential area of Wuhua District Urban Park Green Space Health Service in Kunming City,the largest number of service residential communities is Cuihu Park,followed by Kunming Zoo and Lianhuachi Park.Jinbi Park,Jingxing Park,Qiangtang Legal Park and Yunrui Xiaoyou Garden have a moderate number of service residential areas.Mianshan Forest Ecological Park,Xibaisha River Ecological Park,Xiyou Cave Scenic Area and Kunming Country Park have no service.In residential areas,the function of urban park green space resources to provide services for people’s health has not been fully utilized.(3)The number of urban park green spaces in the residential area of Wuhua District is analyzed.The results show that 371 residential communities in 747residential areas in Wuhua District of Kunming City are within the service scope of urban park green space,and the remaining 376 residential communities are not included.It is within the service area of the city park green space.Within the area of Helinpu Street,Fengning Street and Hongyun Street,the number of residential communities that cannot be served by urban park green space is large,and the number of urban park green spaces is basically one to two,and the urban park green space is less selective.There are a large number of urban park green spaces in Daguan Street,Huguo Street,Huashan Street and Longxiang Street.(4)The density of pedestrian roads and the density of the elderly population in each street in Wuhua District were measured,and the convenience of using urban park green space by the elderly in each street was analyzed.The analysis results show that the density of walkable roads in the street varies greatly.The top four walkable road densities are:Huguo Street,Daguan Street,Huashan Street,and Fengning Street.The density of walkable roads in the factory street and Shalang street is poor.The top four population density of the elderly are:Daguan Street,Huashan Street,Huguo Street,and Longxiang Street.Streets with a dense population density of the elderly have a relatively good density of pedestrian roads.The population density of the elderly in Longxiang Street is relatively large,but the density of walkable roads is not good.It is necessary to strengthen the pedestrian road construction of Longxiang Street in the future construction process and improve the convenience of the elderly to visit the urban park green space.(5)The ecological service evaluation of the urban park green space in Wuhua District of Kunming City was carried out by the oxygen balance method.The oxygen release amount of the urban park green space in the study area was 138752.5 kg.According to the per capita oxygen demand,the total oxygen demand in the study area was 577321.5.Kg,compared with the oxygen release capacity of the urban park green space,the oxygen supply is insufficient.According to different types of green space coverage,to achieve the balance of oxygen supply and demand in the study area,it is necessary to increase the urban park green area range from 9.15km~2 to 31.87km~2.(6)The evaluation results of this study are compared with the"Kunming Urban Green Space System Planning(2010-2020)".The green space in the planning scheme and the residential area in Wuhua District can overlap to a certain extent in the urban park green space.There is also no green space planning around the residential community that has no access to the number of urban parks.The green space layout in the planning scheme is more reasonable.However,based on the new scale,oxygen supply and demand are still unbalanced,and the urban park green space needs to be further increased. |
