一、基本情况中山市城区(原为中山县石岐镇)位于全市的中心,地处珠江三角洲南部河网地带,岐江河与广珠公路交叉相会,横贯城区而过,水陆交通四通八达,是北上广州、南下港澳的枢纽。城区的东南、西南为丘陵山地,北面是淤积平原,东北面的莲峰山,海拔78米,是俯瞰全城的最高点。目前,城区 First, the basic situation Zhongshan City (formerly Shiqi Town, Zhongshan County) is located in the center of the city, is located in the southern part of the Pearl River Delta river network, the Lancang River and the Guangzhou-Zhuhai Highway meet, cross the city and passing, land and water transportation extending in all directions, is North to Guangzhou, south to Hong Kong and Macao hub. The southeast and southwest of the city are hilly mountains, the north is the silt plain, and the northeastern peak of the mountain, 78 meters above sea level, is the highest point overlooking the city. Currently, urban areas