Assessing the Stress-Relief Benefits of Bamboo Landscapes in Urban Parks: Using VR180 as a Presentation Medium

Source abstract

Urban parks can mitigate residents’ mental health risks. Although bamboo landscapes are widespread in Chinese parks, evidence for their stress-relief benefits remains limited, and current evaluation media are constrained. This study assessed the feasibility of virtual reality 180° (VR180) for landscape evaluation and examined the stress-relief benefits of bamboo landscapes in urban parks. A pilot study (n = 232) compared perceptual realism and psychological perception across four presentation modes (on-site scene, binocular 3D video, binocular 3D photograph, and two-dimensional photograph). A main experiment (n = 280) examined the stress-relief benefits of six bamboo landscape types (bamboo–terrain, bamboo–architecture, bamboo–environmental furniture, bamboo–pavement, bamboo–water, and bamboo–plant landscapes) using pre- and post-viewing changes in skin conductance level (SCL), heart rate variability indices, including high-frequency power (HF) and the LF/HF (low-frequency/high-frequency) ratio, and systolic and diastolic blood pressure (SBP and DBP), with urban block landscapes as the control. VR180 outperformed two-dimensional photographs in perceptual realism and psychological perception and showed relatively high substitutability for on-site evaluation, with binocular 3D videos performing better than binocular 3D photographs. Urban park bamboo landscapes generally elicited stress-relief benefits, whereas urban block landscapes showed the opposite pattern. Bamboo–water and bamboo–plant landscapes showed the most favorable overall responses, with bamboo–water ranking higher, whereas bamboo–pavement ranked lowest. Overall, bamboo landscapes combined with naturalized elements tended to produce more favorable stress-relief responses, while hard elements may partly influence these benefits through cultural expression. This study provides a methodological option for landscape evaluation in small-scale scenes and offers physiological evidence for understanding the health value of urban park bamboo landscapes.