Improving the evaluation criteria for the soundscape of urban green spaces is essential for the purposes of designing and planning. Nevertheless, studies that focus on the significance of soundscape diversity in such evaluations have been very limited. Furthermore, the relationship between soundscape diversity and the indicators used to evaluate soundscape in urban green spaces remains unclear. The present study investigates the relationship by conducting a soundscape survey across 30 green spaces to derive four soundscape diversity indices: the soundscape diversity index (SDI), soundscape richness index (SRI), soundscape dominance index (SDO), and soundscape evenness index (SEI). The findings indicate that soundscape diversity significantly influence sound preference, perceived affective quality, and the overall soundscape assessment, especially in traffic-noise-dominated and natural-sounds-dominated green spaces. Additionally, sound preference and perceived affective quality were found to act as intermediary factors between soundscape diversity and the overall soundscape assessment. The mediating effect was responsible for 23.7%, 24.5%, and 84.3% of the total effect in three types of green space, respectively. Therefore, the ideal soundscape diversity in urban green spaces depends on their specific type, rather than a simple “more is better” or “less is better” approach. Correspondingly, the use of soundscape diversity as a novel evaluation indicator can be employed for the assessment and design of soundscape in urban green spaces in future studies.

中文翻译：

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利用声景多样性解读城市绿地声景评价——关系、整合与应用


完善城市绿地声景评价标准对于设计和规划至关重要。然而，在此类评估中关注声景多样性重要性的研究非常有限。此外，声景多样性与用于评估城市绿地声景的指标之间的关系仍不清楚。本研究通过对 30 个绿色空间进行声景调查来调查这种关系，得出四种声景多样性指数：声景多样性指数 (SDI)、声景丰富度指数 (SRI)、声景优势指数 (SDO) 和声景均匀度指数 (SEI) ）。研究结果表明，声景多样性显着影响声音偏好、感知情感质量和整体声景评估，特别是在交通噪声主导和自然声音主导的绿色空间中。此外，声音偏​​好和感知情感质量被发现是声景多样性和整体声景评估之间的中介因素。在三类绿地中，中介效应分别占总效应的23.7%、24.5%和84.3%。因此，城市绿地理想的声景多样性取决于其具体类型，而不是简单的“越多越好”或“越少越好”的方法。相应地，在未来的研究中，可以将声景多样性作为一种新颖的评价指标用于城市绿地声景的评估和设计。