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Environmental characteristics in each experimental zone
| Zone | Main sound source | Equivalent sound level (dBA) | Visual environment |
|---|---|---|---|
| A | Continuous transportation sound, faint bird sound | 55.9 | River, trees, grassland, pedestrian path, overlooking bridge |
| B | Mowing sound (periodic pause), occasional transportation sound | 71.4 | |
| C | Bird sound, insect sound, occasional transportation sound | 47.3 |
