Relationship Between Bamboo Landscape And Psychophysiological Responses Of The Older Adults In Chengdu City Park

Under the social background of high urbanization and rapid aging,the construction of green space suitable for aging is particularly important.With the aging society coming,the elderly have become the main user groups of green space in parks.At present,there are few studies on the relationship between landscape characteristics and human physiological and psychological responses.This paper takes the representative landscape of Chengdu City Park—bamboo landscape as the research object,takes the elderly as the subject,extracts the describing factors of bamboo landscape characteristics of Chengdu urban park,and analyzes the relationship between landscape characteristics of ornamental bamboo and emotional recovery(EEG interpretation),landscape preference and perceptual recovery of the elderly.The study can better determine the impact of landscape characteristics on the physiological and psychological characteristics of the elderly,thus providing a theoretical basis for the planning and design of health-promoting landscape for the elderly.According to the selected landscape characteristic factors,indoor simulation interaction experiments were conducted to explore the relationship between the space under different bamboo forests and the physiological and psychological responses of the elderly.The experimental group was composed of four common understory vegetations,Ophiopogon japonicus and Kidney fern,and semi-shade-tolerant Rhododendron(flowerless and flowerless),as well as the understory space allocated by bare soil and bamboo flour,and the control group was the activity room of the elderly.This paper attempts to explore the influence of bare soil in Undergrowth space and the space created by different ground cover plants and bamboo flour on the physiology and psychology of the elderly.The differences of emotional value(EEG interpretation),heart rate variability,heart rate,blood pressure,attention test value,landscape preference value and perceptual recovery value between the elderly under different bamboo forests and in the elderly active room were analyzed and compared.Finally,from two aspects of design optimization and management optimization,the evidence-based optimization strategy is put forward for the health-promoting landscape of the elderly in Chengdu City Park,and the research object is rebuilt and designed based on evidence.The main conclusions are as follows:(1)Bamboo landscape can promote the mental health of the elderly.Compared with the urban environment,most of the landscape has a better effect on reducing the "FRU" and "FOC" values of the elderly,which indicates that bamboo landscape has a better role in reducing the pressure and restoring the attention of the elderly.(2)The influence of bamboo landscape characteristics on the emotional recovery of the elderly has gender differences,and there are many landscape characteristics factors related to female physiological and psychological responses.Among them,there are many landscape characteristics that significantly affect female stress recovery.Women may easily get negative emotional improvement related to stress in the landscape.(3)Bamboo landscape has a positive impact on the psychological perception of the elderly.The landscape preference perception and perception recovery of the elderly are significantly higher than that of the urban environment.The measurement values of six sub-indicators of bamboo landscape perception are significantly higher than that of the urban environment.The landscape preference value and perception recovery value offemale subjects to bamboo landscape were higher than those of male subjects.(4)The space under bamboo forests can significantly improve the positive emotions of the elderly.The space under bamboo forests with flowering plants has the best relaxation effect.When exposed to the space under bamboo forests(bamboo +rhododendron,YHDJ),the MED value of the elderly is significantly higher than that of other spaces.This shows that the space under the bamboo forest(bamboo + rhododendron,YHDJ)can promote the human body to get better physiological relaxation,make people feel peaceful,calm and stable.(5)Under bamboo forest space can effectively enhance the regulation ability of autonomic nervous system(ANS)dynamic balance.Under bamboo forest space(bamboo+ rhododendron,YHDJ),the parasympathetic nerve activity of the elderly is significantly higher than that of other spaces,and the sympathetic nerve activity is significantly lower than that of other spaces,and compared with the experimental group(bamboo + bare soil,LT)and the control group(HDS).There are significant differences in HDS in the activity centers for the elderly.(6)The space under bamboo forest can effectively improve the attention of the elderly,and can effectively improve the positive emotions,landscape preferences and perceptual recovery of self-report of the elderly.There was no significant difference in attention recovery among different types of bamboo forests.The space under bamboo forests(bamboo + rhododendron,YHDJ)had the best effect to promote the mental health of the elderly.