| Under the trend of urbanization,the area o f urban park green space is reduced,which leads to the disorder development of space and the fragmentation of structure,which makes the quality of urban park green space decline.As the main o utdoor activity space of urban residents,urban park green spa ce plays a good role in guiding residents to carry out outdoor leisure activities and effectively alleviating and healing various sub-health problems.Due to the lack of good outdoor activity sp ace,the physical activity opportunities of urban residents are reduced,and the level of physical activity is reduced,which has a negative impact on the healthy development of urban residents.As the future and hope of the motherland,the gro wth of teenagers’ physical and mental health has been widely concerned.As teenagers are in a period of rapid physical and mental development,it is very important to carry out sufficient physical activities for their healthy physical and mental development and reduce the pressure of learning.The research shows that the development of physical activity is closely related to the urban park environment.How to promote the occurrence of physical activity of teenagers through a good park environment is of great significance.But at present,there are few researches on the physical activity of teenagers in the urban park green space.Based on the investigation of the influence of visiting distance,landscape elements and subjective feelings of urban park green s pace on Teenagers’ physical activity,this paper discusses the influencing factors of teenagers’ physical activity and the environmental design methods of promoting teenagers’ physical and mental health in cold area.Through the investigation and analysis of the influence of urban park green space on the physical activity of teenagers,the results show that:(1)The results show that: a.the frequency of physical activity is high,the time of participating in activities in the park is short,and the distance correspondi ng to the frequency is low,but the activity time is long,showing the compensation effect in frequency and time;b.The study on the visiting distance and physical activity of the park shows that the changing distance threshold(impact on frequency)nodes are 100 m and 600 m respectively.The activity frequency is higher when the distance is within 100 m,and higher when the distance is over 600 m.The distance threshold(the impact on the activity time length in the park)no des that change are respectively,the distance is 300 m and 2km,the activity time is shorter within 300 m,and the activity time is longer above 2km;c.The comprehensive effects of activity frequency and activity duration in the park were calculated.Witho ut considering the influence of activity intensity,the distance of 300-600 m could promote the youth to participate in physical activity most.(2)The results show that: a.the degree of teenagers’ attention to environmental factors is: maintenance management,safety,overall atmosphere,faci lities,landscape environment.Among the maintenance management factors,health maintenance is the most imp ortant,followed by site maintenance and facility maintenance.In terms of safety,the most attention is paid to the safety problems caused by the ac tivities of bad personnel;b.beautiful building shape,open water surface and smooth road system can effec tively promote the development of physical activities of young people;c.The interest and good safety of facilities and sites are the basis of physical activities of young people.At the same time,the environment should pay attention to good maintenance,especially the facilities and sanitation;D.through the analysis of the important landscape elements,it is found that the architectural modeling i s more important for the physical activities of young people.To some extent,it can alleviate the adverse effects of polluted air,noise and sanitation.(3)The research shows that the physical ac tivity of adolescents is greatly influenced by their parents’ knowledge level and their love for physical activity.The higher the educational background of parents,the more attention they attach to physical acti vity of teenagers. |