唐山市位于河北省东北部,处于环渤海湾中心地带,毗邻京津,北与秦皇岛、承德相连,地处东经117°31’~119°19’,北纬38°55’~40°28’,年平均气温11.1℃,年均无霜期182天,年日照266小时,年均降雨量623毫米,年均相对湿度59.8%。气候属于暖温带半湿润区,季风盛行,光照充足,雨量较 Tangshan City is located in the northeastern part of Hebei Province and is in the center of Bohai Bay. It is adjacent to Beijing and Tianjin and is connected to Qinhuangdao and Chengde in the north. It is located at 117°31’~119°19’ east longitude and 38°55’~40°28’ north latitude. The annual average temperature of 11.1 °C, the average annual frost-free period of 182 days, 266 hours of sunshine, the average annual rainfall of 623 mm, the average annual relative humidity of 59.8%. The climate belongs to the warm temperate semi-humid area, the monsoon prevails, the light is sufficient, and the rainfall is relatively