Geographical environment of Dinghai district

Dinghai is located in the East China Sea in the northeast of Zhejiang Province, the southeast of Shanghai and the outer edge of Hangzhou Bay. Its geographical position is between12138'-12215' and 29 55'-3015' north latitude. Dinghai faces the vast Pacific Ocean, backed by large and medium-sized cities such as Shanghai, Hangzhou and Ningbo, and the vast hinterland such as the Yangtze River Delta. It is the hub of north-south shipping and international routes in the Far East of China, and it is also the maritime gateway and channel for the Yangtze River Basin to open to the outside world. Dinghai belongs to the maritime monsoon climate on the southern edge of the northern subtropical zone, with warm winter and cool summer, moderate humidity and abundant sunshine. The annual average temperature is 15.6- 16.6℃, and it is the hottest in August with an average temperature of 25.8-28.0℃. The most Leng Yue is 65438+ 10 month, with an average temperature of 5.2-5.9℃. The annual average precipitation is 927- 1620mm, with southeast wind prevailing in summer and west wind prevailing in winter. The average annual sunshine is 2101-2,302 hours, the average annual wind speed is 3.3-7.2 m/s, and the frost-free period is 25 1-303 days, which is suitable for the reproduction and growth of various biological communities. Because it is located at the seaside, the air has strong natural purification ability, clear and refreshing, the sky is blue, white clouds are fluttering, the island has beautiful scenery and pleasant climate. Tropical storms and typhoons that occur from July to September every year are the worst weather.