成都市锦城绿道一期声景调查与评价

Soundscape investigation and evaluation of Jincheng Greenway in Chengdu

随着人们环境保护意识的提高及声景学相关研究在国内的兴起,声景对城市绿地的影响日渐加深。基于客观声压级与主观声舒适度评价两种数据的绿道声环境表现,通过解析场地声景优劣的影响因素,运用多维视角提出锦城绿道一期声景优化的策略与建议。并得出以下主要成果及结论:首先,城市道路所产生的车流噪声对绿道影响显著,绿道内部景观节点处呈现出高声压级点状聚集。其次,游客对安静的声环境期待较高,较为安静且自然声较高的区域更容易被游客接受,同时消极声的干扰程度、场地功能的协调性是产生声环境差异的主要因素。最后,全局统筹规划并在声源、传播过程及受声处实现多过程管控才能够形成协调的声环境。

With the improvement of people’s awareness of environmental protection and the rise of soundscape-related research in China, the impact of soundscape on urban green space is deepening. Based on the objective sound pressure level and subjective sound comfort evaluation data of the greenway acoustic environment performance, by analyzing the factors influencing the soundscape quality of the site, the optimization strategy and suggestions for the soundscape of the first phase of Jincheng Greenway are proposed from a multi-dimensional perspective. The main results and conclusions are as follows: first, the traffic noise generated by urban roads has a significant impact on the greenway, and the landscape nodes within the greenway present a point-like aggregation of high sound pressure level. Second, tourists have high expectations for quiet acoustic environment, and quiet areas with high natural sound are more likely to be accepted by tourists. At the same time, the disturbance degree of negative sound and the coordination of site functions are the main factors that produce differences in acoustic environment. Finally, a coordinated acoustic environment can be formed only through overall planning and multi-process control in sound sources, transmission processes and the sound receiving places.