Geographical environment of Tiantai county

Tiantai County is located in the east-central part of Zhejiang Province, named after Tiantai Mountain in China, with Ninghai and Sanmen in the east, Pa

Geographical environment of Tiantai county

Tiantai County is located in the east-central part of Zhejiang Province, named after Tiantai Mountain in China, with Ninghai and Sanmen in the east, Pan 'an in the west, Xianju and Linhai in the south and Xinchang in the north. It is located between 28 57 ′ 02 ″ and 29 20 ′ 39 ″ north latitude and120 41210/5 ′ 46 ″ east longitude. It is 54.7 kilometers long from east to west and 33.5 kilometers wide from north to south, with a total area of 1420.70 square kilometers.

Tiantai County is 223 kilometers away from the provincial capital Hangzhou, Ningbo 14 1 km away from Jiaojiang11km away. The total length of the county boundary is 310.15km. Among them, the county boundary adjacent to Xinchang County is 79.53 kilometers long; The border with Ninghai County is 54.17km long; The county boundary length with Sanmen County is19.4km; The county boundary adjacent to Linhai City is 58.8 kilometers long; The county boundary adjacent to Xianju is 25.66 kilometers long; The county boundary adjacent to Pan 'an is 72.52 kilometers long. Tiantai county belongs to the subtropical monsoon climate zone, with four distinct seasons, abundant precipitation and sufficient heat. Due to the mountainous surrounding area and low level in the middle, the climate characteristics of small areas are remarkable and there is a certain basin climate.

Spring begins on March 28th and ends on May 27th, totaling 6 1 day. The temperature rises in waves, the north-south airflow alternately strengthens, and the low pressure and frontal activity are frequent. Therefore, precipitation is increasing, the wind direction is changeable, and continuous low temperature and rainy weather often occurs. Sometimes cold and warm air is stirred alternately, forming a seesaw situation, and the weather is unpredictable, so there is a saying that "a child's face changes three times a day in spring". Summer begins on May 28th and ends on September 27th, with a total of 123 days. The warm and humid air flow from the southeast ocean with high temperature and high humidity strengthens and meets the cold air in the north with certain forces, forming a rainy and rainy "Meiyu" season. With the further weakening and northward movement of cold air, under the control of subtropical high in midsummer in our county, except for local thunderstorms in the afternoon, it is mainly sunny and hot with little rain, and there is often summer drought. Affected by tropical storms (including typhoons) from July to September, violent storms often occur. Autumn: starts on September 28th, and ends on165438+1October 27th, counting 6 1 day. The warm and humid air flow begins to decline, and there is often a small cold air invasion, and the front activity begins to increase, often resulting in rainy weather, commonly known as "black in August" in the lunar calendar. After the Mid-Autumn Festival, the influence of cold air was further strengthened, affected by the low high pressure in the lower reaches of the Yangtze River. The weather is stable and the autumn is crisp, so it is called "Koharu in October". Winter starts from165438+1October 28th and ends on March 27th of the following year, which is120th day. How sunny and cold it is. Under the influence of strong cold air, it will cause severe cooling, accompanied by strong wind, heavy snow and freezing weather.