Physical geography of Sucheng New District

Sucheng District, located in the north of Jiangsu Province, is the thoroughfare of the four provinces of Jiangsu, Shandong, Henan and Anhui, and belongs to the cross-radiation area of Longhai Economic Belt, Coastal Economic Belt, Economic Belt along the Yangtze River and the hinterland of the Yangtze River Delta.

Zhangshan Forest Park is located in the northern suburb of Suqian City, 7 kilometers away, adjacent to Lake Rome in the west, with a total area of 65,438+100000 mu and forest land of about 6,000 mu. There are more than 70 tree species such as Platycladus orientalis, Robinia pseudoacacia, Pinus thunbergii and Quercus acutissima. It is hilly and mountainous, with the highest point 73.4 meters above sea level (the highest in the urban area). The territory is ups and downs, and ravines are vertical and horizontal.

Hongze Lake and Rome Lake have a total area of more than 3.5 million mu and are rich in fresh water resources. The water quality of Lake Rome has reached the national second-class standard all the year round.

Hongze Lake

Hongze Lake is located in the west of Hongze County, Jiangsu Province, and developed on the alluvial plain in the middle reaches of Huaihe River. It used to be a depression with poor drainage, but later the accumulated water became many small lakes. During the Qin and Han Dynasties in China, they were called Fuling Lake. Among them, Hongze Lake is the largest, covering an area of 2,069 square kilometers, and it is the fourth largest freshwater lake among the five largest freshwater lakes in China.

Rome

Lake Rome is one of the four major lakes in Jiangsu Province, which straddles the junction of Xinyi and Suqian counties. The lake area starts from Yantou Village levee in the north and reaches the gate of Yanghetan (Suqian City) in the south, with a straight line length of more than 27 kilometers: it connects the Central Canal in the west and Lushan Mountain in the south of Maling Mountain in the east, with an average width of 13 kilometers and a total area of 375 square kilometers. The elevation of the lake bottom is18-21m. When the water level is 23.0m (at the bottom of the ancient Yellow River), the average water depth is 3.32m, the water depth in the southeast of the deepest isobath is 5.5m, and the storage capacity is 750 million cubic meters.

Sucheng District belongs to the warm temperate monsoon climate zone, with superior light and heat resources, distinct seasons and mild climate. The annual average temperature is 14. 1℃, the annual average sunshine is 23 15 hours, the total solar radiation is about 1 17 kcal/cm2, and the annual sunshine number is 227 1. The frost-free period is long, averaging 2 1 1 day, the first frost period is generally in late June 10, the first snowfall day is generally in mid-February 189℃, and the annual crop growth period is 3 10.5 days. The annual average precipitation is 892.3mm, which has little interannual change due to the influence of monsoon, but the precipitation distribution is uneven, which is easy to form spring drought, summer waterlogging and dry weather in autumn and winter. In 2002, the temperature was high, precipitation and sunshine were few, it rained continuously in spring, the temperature was low and sunshine was few for a long time; There is continuous drought and little rain in summer and autumn

Gas temperature

The annual average temperature in 2002 was 65438 05.3℃. The average temperature is higher than normal except for 65438+ 10 and May, among which February is 4.4℃, 65438+ 10 and May are 3 .3℃ and 3.6℃ respectively. The extreme maximum temperature is 38.3℃, which appears in July 15. The extreme minimum temperature is -9.5℃, which appears on 65438+February 26th.

drip

The total precipitation in 2002 was 63 1 mm, 277.5 mm less than normal. It rains continuously in spring, and the precipitation in March and May is more than normal. The precipitation in summer and autumn is obviously less, and it is less than normal in June-65438+February. The precipitation in July and August is11.7mm and 9 1. 1mm respectively. The maximum daily precipitation is 85.8mm, which appears on July 23rd.

sunshine

In 2002, the total sunshine hours were 265,438+073.0 hours, 35.5 hours less than normal. /kloc-The sunshine hours in October and May were 55.3 hours and 90.3 hours less than normal, respectively. It rained continuously in early May, and the sunshine hours were only 19.6 hours, 52.3 hours less than normal.