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With the acceleration of urbanization, equipment noise pollution has become a core challenge in the management of social life noise. This review summarizes the governance pathways and noise reduction technologies for noise pollution from equipment. It identifies three major current challenges: passive noise reduction shows insufficient attenuation for low−frequency noise (<500 Hz) and significant weight increase; active noise cancellation (ANC) faces bottlenecks in high−frequency noise (>1 kHz) control, real−time computing power, and power consumption; sound quality optimization is constrained by individual differences in psychoacoustic parameters. Aiming at the above limitations, this paper proposes frontline technological breakthrough directions: low−frequency efficient sound absorption of acoustic metamaterials (sound absorption coefficient>0.95), noise reduction−efficiency synergy of aerodynamic bionic technology, and artificial intelligence−driven dynamic adaptation of intelligent noise reduction. It is recommended to build a soundscape ecology from physical silence to psychological tranquility through the integration of the three−chain "policy−technology−standard" to support the implementation of the "Quiet China" strategy.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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