Impact Of Campus Street Trees Landscape On Stress Recovery Of College Students

As the global urbanization process continues to accelerate,urban public health problems are emerging.The alienation from the green environment,the working and living pressures in urban life,and the continuous pollution and infectious diseases gradually threaten the public health.Increasingly fierce social competition and academic pressure have also brought more challenges to college students.When college students lack proper understanding of stress without properly resolving it,the stress can easily cause mental illness and endanger the physio-psychological health of students.Many previous studies have proved that the natural landscapes are more beneficial to human health compared to the artificial environment,especially to mental health from a statistical perspective.Creating a campus environment that can help college students effectively relieve stress and restore physical and mental health is worth the attention of landscape architects.Campus street trees are the everyday landscape space for college students.Understanding the influencing effects and factors of this landscape on the stress reduction of college students will provide a scientific basis for future construction of healthy campus.This was the first study to examine the stress recovery effects of campus street trees on college students in autumn under virtual visual stimulation.The Trier Social Stress Test(TSST)was used to create an acute stress situation,and the VR panorama technology was used to carry out the landscape stimulation test.The physiological indicators(R-R interval,brainwaves)and psychological indicators(state anxiety inventory,perceived restoration scale)of 150 college students were measured and analyzed.We compared and discussed the restorative effects,and explored possible influencing factors,such as gender,landscape quality,and landscape elements of street trees.This study addressed the following three issues: whether the campus street tree landscape can relieve the physical and mental stress of college students;the impact variation of different street tree landscapes on the stress relief of college students;the influencing factors of different street tree landscapes on the stress relief of college students.The main findings are as follows.(1)The autumn landscape of campus street trees had mitigating effects on human stress.The four kinds of street tree landscape,including Sophora japonica,Ginkgo biloba,Platanus acerifolia,and Koelreuteria paniculata,had obvious effects on college students' stress relief compared with the indoor environment.(2)The effects of stress relief were variable due to the difference of street tree landscape.The stress relief effect of Ginkgo biloba street tree landscape was the most prominent.The R-Rinterval and brain wave significantly increased(p<0.05),whereas the anxiety state significantly reduced(p<0.01).The perceived restoration score was the highest.Sophora japonica and Platanus acerifolia were next,while Koelreuteria paniculata street tree landscape exhibited weaker effects.(3)Compared with men,women showed lower overall recovery effects.But women were more remarkably affected by the preference of landscape beauty.There was a significantly positive correlation between the landscape beauty and the subjects' physio-psychological recovery effects.The proportions of yellow leaves,crown area,and sky area seen were positively correlated with the overall recovery effects of the subjects.In order to build a healthy campus landscape in the future,we need to continuously conduct in-depth investigation to provide more scientific basis and design suggestions.