1、12-14 Monitoring of Urban Environment Noise in Key Cities under National Control Programme (2003) City Grid LengthGrid WidthTotal number Sound Level (m)(m)of Grids (unit)LeqdB(A) Beijing 1000100042853.6 Tianjin 1000100020555.0 Shijiazhuang 50050024054.0 Taiyuan 75075023253.8 Hohhot 40040020454.0 She
2、nyang 75075024053.5 Changchun 50050020457.0 Harbin 70070021656.1 Shanghai 1414141420456.7 Nanjing 1000100021054.3 Hangzhou 50050023556.0 Hefei 50050025052.5 Fuzhou 50050022056.3 Nanchang 50050020155.8 Jinan 1000100042648.6 Zhengzhou 50050023555.9 Wuhan 1000100021055.1 Changsha 50050028853.8 Guangzhou 1000100020254.5 Nanning 55055020056.2 Haikou 40040020356.1 Chongqing 50050066155.0 Chengdu 90090021554.8 Guiyang 50050022055.8 Kunming 80080022354.6 Lhasa 55.6 Xian 50050021255.6 Lanzhou 37537522458.0 Xining 50050020051.3 Yinchuan 75075020951.1 Urumqi 1000100042853.4
