Landscape areas with particularly quiet areas
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Landscape area with particularly quiet areas: largely natural or forestry contiguous natural space, edge length at least 3 400 m and a day-evening night noise index of < 45 dB(A) in the core area
具备格外静谧区域的景观地块：其主体为近乎天然或林业连片的自然空间，边界总长不低于3400米，且核心区域的昼间-傍晚-夜间噪声指数低于45分贝（A计权）
