Table_1_Estimation of mediators in the associations between campus green spaces and students’ anxiety: a case study in Nanjing.DOCX

IntroductionAlthough a number of scholars have examined the theoretical pathways between green space (GS) and mental health, few have focused on how campus greenness affects the mental health of Chinese youth.
MethodsHerein, two objective indicators, campus and individual 300-m normalized vegetation index (NDVI) data, were used as independent variables. A questionnaire was used to collect the self-rated anxiety level of students on campuses in Nanjing. Then, we chose “subjective perception of campus GS”, “physical activity”, “social cohesion”, “nature relatedness” and “usage pattern” as mediating variables to explore the pathways between the campus greenery and college student’ anxiety level through correlation analysis, linear regression, and mediation effect test.
ResultsResults showed the campus-wide NDVI and individual students’ 300-m range NDVI had significant negative correlations with anxiety (p = 0.045, p = 0.023). Campus perception, nature relatedness and the frequency of using GS are the pathways through which campus GSs influence student anxiety.
DiscussionOur findings emphasised the importance of subjective perceptions of greenspaces, which provided a direction that can be deepened in future research.

引言 尽管已有诸多学者探讨了绿地（Green Space, GS）与心理健康之间的理论路径，但鲜有研究聚焦于校园绿地如何影响中国青年的心理健康。
方法 本研究以校园尺度与个体300米归一化植被指数（NDVI）数据作为两项客观自变量。通过问卷收集南京高校学生的自评焦虑水平，并选取“校园绿地主观感知”“体育活动”“社会联结”“自然联结性”以及“使用模式”作为中介变量，采用相关分析、线性回归与中介效应检验方法，探究校园绿地与大学生焦虑水平之间的作用路径。
结果 研究结果显示，校园全域NDVI与个体300米范围NDVI均与焦虑水平呈显著负相关（p=0.045，p=0.023）。校园感知、自然联结性以及绿地使用频率是校园绿地影响学生焦虑水平的关键中介路径。
讨论 本研究结果凸显了绿地主观感知的重要价值，为未来研究的深化方向提供了参考。