Study On The Suitability Of Green Infrastructure For Walking Physical Activity In Changsha Zhuzhou Xiangtan Urban Agglomeration

Health has always been one of the eternal topics of human concern.With the rapid development of the city,the incidence rate of many chronic diseases is increasing.Regular physical activity is not only beneficial to people’s health,but also one of the important ways to reduce the occurrence of chronic diseases such as obesity.Because the green infrastructure of urban agglomeration can provide a low-cost activity environment and affect the walking physical activity level of people of different ages,more and more people tend to exercise here.Based on the track of walking physical activity,this paper studies and analyzes the temporal and spatial distribution,sports attributes and other characteristics of walking physical activity in green infrastructure of Changsha Zhuzhou Xiangtan Urban Agglomeration,as well as the main spatial types carrying walking physical activity.By constructing a hierarchical regression model of green infrastructure and walking physical activity,this paper carries out hierarchical regression simulation on the frequency and intensity of walking physical activity from three aspects: personal sports preference,socio-economic attributes and material built environment,and comprehensively establishes the influencing factors highly related to the suitability of walking physical activity in this space from two aspects: affecting the frequency and intensity of walking physical activity.Based on the above research results,The suitability evaluation system is constructed by selecting corresponding indicators from five aspects: land use and construction density,landscape greening,road network,accessibility and natural factors.Through the comprehensive suitability evaluation and classification suitability evaluation of green infrastructure for walking physical activity in Changsha Zhuzhou Xiangtan Urban Agglomeration,the main conclusions are as follows: firstly,different types of green infrastructure have different effects on the frequency and intensity of walking physical activity,and the influence degree of the same influencing factor on the frequency and intensity of walking physical activity in different types of green infrastructure is also different;Secondly,the suitability of the green infrastructure of Chang Zhu Tan urban agglomeration for walking physical activities is higher in the center and lower in the periphery.The existing green infrastructure is relatively scattered and does not form a network system.The areas with high suitability are mainly concentrated in the central cluster areas with perfect road network,high degree of land diversity,more parks,colleges and universities and more perfect urban construction;Third,as a green heart with high suitability for walking physical activities,its actual use effect is not ideal,and its use frequency is relatively low,which is far from playing a great role of green heart.Finally,based on the above suitability analysis,the fitness promotion strategy of walking physical activity is proposed.