Research On Health Benefit Evaluation And Improvement Strategy Of Urban Park Green Space Under The Guidance Of Healthy City Theory

At the end of 2019,the global COVID-19 triggered the whole society’s attention to public health.Landscape architecture played an important role in the prevention and control of public health.As one of the essential living conditions for urban environmental quality and people’s physical and mental health,urban green space is a crucial link in modern urban construction.The research shows that the urban park environment plays a positive role in public health.In the process of urban park green space transformation,fully considering the health value and benefits of park space is conducive to the efficient utilization and sustainable development of urban park space.Based on the theory of health orientation and healthy city,combined with analytic hierarchy process(AHP),this paper determines the influencing factors of spatial health benefits:natural elements,activity space,service facilities and spatial experience perception,and finally determines 14 indicators of health benefits,and calculates the index weight of influencing factors at all levels of Urban Park health benefits,The fuzzy comprehensive evaluation method(FCE)is used to evaluate the current situation of green space health benefits of Dongfeng Park in Baoding,and the following conclusions are drawn:(1)the range of unit space health benefits of Dongfeng park is 2.021～4.156,the highest score is 4.156 and the lowest score is 2.021.The unit space health benefits are good,including 2 healthy spaces,8 spaces with good health benefits and 4 spaces with general health benefits;The objective evaluation results showed that there was no unit activity space with poor health benefits.(2)The comprehensive score of the health benefits of the communication activity space in Dongfeng park is 3.207,the health service benefits are good,and the comprehensive score of the health benefits of the physical activity space is 2.628,the health service benefits are general,the health service benefits of the communication activity space are higher than those of the physical activity space,and its vitality is also higher.(3)The evaluation result of the overall spatial health benefit of Dongfeng park is 3.916,and the overall spatial health benefit tends to a good level.(4)When the health benefit level of unit space is above the good level,and increase the vitality of physical activity space and improve its space health level,the park green space will tend to a healthy state.Combined with the field investigation and questionnaire survey,the subjective evaluation of space health benefits and general activities is verified and analyzed.It is concluded that the results of the objective evaluation system are basically consistent with the subjective evaluation results of the actual use of space.Combined with the four quantitative factors of natural elements,activity space,service facilities and spatial experience perception,this paper explores the construction strategy of green space health space in Baoding Dongfeng Park,and summarizes the strategies and suggestions to improve the vitality and health benefits from the two aspects of unit functional space and overall space of urban park,so as to provide new strategic ideas for the transformation of green space in urban park under the background of public health in the future.The strategies to improve the benefits of unit space health service in urban parks are as follows:(1)enrich the vegetation structure of different spaces in combination with the terrain to improve the benefits of unit activity space health service;(2)Increase the number of fitness facilities,enrich the types of fitness facilities,and improve the health benefits of physical activity space;(3)Strengthen the privacy of the space and ensure the social safety distance,which is conducive to the healthy space of the construction unit.The strategies to improve the overall spatial health service benefits of urban parks are as follows:(1)enrich the plant landscape,improve the natural elements,and improve the health benefits of space to alleviate mental stress;(2)Balance the space function,encourage physical activity and promote the physiological and health benefits of the park space;(3)Enhance the sense of space experience,create a healthy space with comfortable environment and promote social communication;(4)Improve the number and type of service facilities,and improve the promotion benefits of park green space to people’s health.