2016年，长沙市功能区噪声昼间和夜间噪声达标率分别为68.0%、45.3%，与上年相比，昼间噪声达标率下降9.3个百分点，夜间噪声达标率提高8.6百分点。监测统计结果见表3。
统计结果表明，1类功能区（居民、文教区）昼间噪声年均值超标，夜间噪声年均值符合国家标准，昼间、夜间噪声达标率均为50%；2类功能区（居住、商业、工业混杂区）昼间和夜间噪声年均值均符合国家标准，昼间和夜间噪声达标率分别为71.9%、56.3%；3类功能区(工业集中区)昼间和夜间噪声年均值均符合国家标准，昼间、夜间噪声达标率分别为87.5%、75%；4类功能区（交通干线道路两侧）昼间噪声年均值符合国家标准，达标率为62.5%，夜间噪声年均值超标严重，达标率为0。
表3 2016年长沙市功能区噪声定期监测统计结果
功能区 | 测点名称 | 一季度 | 二季度 | 三季度 | 四季度 | 全年 | |||||||||||
代码 | 类型 | Ld | Ln | Ldn | Ld | Ln | Ldn | Ld | Ln | Ldn | Ld | Ln | Ldn | Ld | Ln | Ldn | |
2 | 1类区 | 中南大学 | 54.8 | 39.7 | 53.6 | 57.5 | 45.3 | 56.9 | 58.0 | 47.8 | 57.9 | 53.8 | 43.0 | 53.6 | 56.0 | 43.9 | 55.5 |
达标率% | 100.0 | 100.0 | / | 0.0 | 0.0 | / | 0.0 | 0.0 | / | 100.0 | 100.0 | / | 50.0 | 50.0 | / | ||
3 | 2类区 | 火星镇 | 56.2 | 51.6 | 58.8 | 60.2 | 53.7 | 61.7 | 48.5 | 47.6 | 53.8 | 61.5 | 55.1 | 63.0 | 56.6 | 52.0 | 59.3 |
火车站 | 60.7 | 51.4 | 60.9 | 58.4 | 51.6 | 59.8 | 57.1 | 51.1 | 58.8 | 56.9 | 48.0 | 57.3 | 58.3 | 50.5 | 59.2 | ||
王家垅 | 55.5 | 49.9 | 57.5 | 52.5 | 44.0 | 53.0 | 56.1 | 52.9 | 59.6 | 56.9 | 52.9 | 59.9 | 55.2 | 49.9 | 57.5 | ||
湘江世纪 | 51.3 | 46.3 | 53.7 | 50.0 | 47.0 | 53.7 | 48.6 | 44.1 | 51.3 | 51.1 | 46.4 | 53.6 | 50.2 | 45.9 | 53.1 | ||
八方小区 | 49.4 | 45.8 | 52.7 | 50.2 | 45.0 | 52.5 | 48.3 | 42.2 | 50.1 | 52.1 | 47.4 | 54.6 | 50.0 | 45.1 | 52.5 | ||
井湾子 | 60.5 | 43.5 | 59.2 | 52.4 | 48.1 | 55.2 | 52.3 | 46.9 | 54.4 | 54.1 | 43.2 | 53.8 | 54.8 | 45.4 | 55.6 | ||
解放四村 | 58.5 | 51.6 | 59.8 | 61.8 | 49.7 | 61.2 | 54.3 | 51.6 | 58.2 | 57.3 | 49.6 | 58.2 | 58.0 | 50.6 | 59.4 | ||
坡子街 | 66.5 | 59.9 | 67.9 | 66.8 | 58.7 | 67.5 | 66.7 | 62.4 | 69.5 | 62.4 | 53.4 | 62.7 | 65.6 | 58.6 | 66.9 | ||
(平均) | 57.3 | 50.0 | 58.8 | 56.5 | 49.7 | 58.1 | 54.0 | 49.9 | 57.0 | 56.5 | 49.5 | 57.9 | 56.1 | 49.8 | 57.9 | ||
达标率% | 62.5 | 50.0 | / | 62.5 | 62.5 | / | 87.5 | 50.0 | / | 75.0 | 62.5 | / | 71.9 | 56.3 | / | ||
4 | 3类区 | 高新开发 | 64.9 | 56.2 | 65.4 | 57.2 | 48.7 | 57.7 | 57.9 | 49.7 | 58.6 | 55.8 | 49.5 | 57.4 | 58.9 | 51.0 | 59.8 |
雨花环保 | 64.7 | 52.5 | 64.0 | 63.1 | 50.9 | 62.5 | 64.9 | 54.1 | 64.7 | 67.0 | 62.3 | 69.6 | 64.9 | 55.0 | 65.2 | ||
(平均) | 64.8 | 54.4 | 64.7 | 60.2 | 49.8 | 60.1 | 61.4 | 51.9 | 61.7 | 61.4 | 55.9 | 63.5 | 61.9 | 53.0 | 62.5 | ||
达标率% | 100.0 | 50.0 | / | 100.0 | 100.0 | / | 100.0 | 100.0 | / | 50.0 | 50.0 | / | 87.5 | 75.0 | / | ||
5 | 4类区 | 五一路 | 70.0 | 68.6 | 74.9 | 61.4 | 60.8 | 66.9 | 63.3 | 60.1 | 66.8 | 63.9 | 62.2 | 68.6 | 64.7 | 62.9 | 69.3 |
韶山路 | 67.9 | 65.8 | 72.2 | 70.1 | 65.5 | 72.7 | 68.8 | 67.0 | 73.4 | 70.6 | 68.7 | 75.1 | 69.4 | 66.7 | 73.3 | ||
二环线 | 68.9 | 60.6 | 69.6 | 70.4 | 64.6 | 72.3 | 70.3 | 67.0 | 73.8 | 71.5 | 69.8 | 76.1 | 70.3 | 65.5 | 72.9 | ||
银盆路 | 69.9 | 62.3 | 70.9 | 70.8 | 61.6 | 71.1 | 68.9 | 67.9 | 74.1 | 61.7 | 59.7 | 66.1 | 67.8 | 62.9 | 70.6 | ||
(平均) | 69.2 | 64.3 | 71.9 | 68.2 | 63.1 | 70.8 | 67.8 | 65.5 | 72.0 | 66.9 | 65.1 | 71.5 | 68.1 | 64.5 | 71.5 | ||
达标率% | 100.0 | 0.0 | / | 25.0 | 0.0 | / | 75.0 | 0.0 | / | 50.0 | 0.0 | / | 62.5 | 0.0 | / | ||