What urban areas does Jianghan Plain include?

Jianghan Plain is located in the middle reaches of the Yangtze River and the middle and lower reaches of the Han River, in the south-central part of Hubei Province, starting from Zhijiang in Yichang in the west, connecting Wuhan in the east and Dongting Lake Plain in the north, covering an area of about 46,000 square kilometers, mainly including Jingzhou District, Shashi District, jiangling county, Gongan County, Jianli County, Shishou City, honghu city City and Songzi City, as well as three counties and cities of Jingzhou City, namely, Xiantao City, Qianjiang City and Tianmen City.

It radiates to caidian district, Hanchuan, Yingcheng, Shayang, Jingshan, Zhongxiang, zhijiang city and Yicheng, and it is five prefecture-level cities around Wuhan, Xiaogan and Jingmen.

Extended data:

1, Jianghan Plain landform

The plain mainly belongs to Jianghan fault depression of Yangtze paraplatform, with low and flat terrain. Except for the gentle slope about 50 meters above sea level and the low mountain above 100 meters above sea level, its altitude is below 35 meters. Generally, it is slightly inclined from northwest to southeast, with an altitude of about 35 meters in the northwest, below 5 meters in the southeast and only 3 meters in Hankou.

Lakes are scattered all over the plain, and water networks and riverbanks are intertwined. The surface materials are mainly composed of modern river sediments and lake sediments, belonging to fine sand, silt and clay, and the tertiary red beds are only exposed at the edge of the plain. The Yangtze River, Hanjiang River and Dongjing River are relatively high in terrain, generally 8-38 meters.

2. Climate of Jianghan Plain

Jianghan plain belongs to subtropical monsoon climate, with an average annual sunshine hours of about 2000 hours and an annual total solar radiation value of about 460 ~ 480 kJ/cm2. The frost-free period is about 240 ~ 260 days, the duration above 10℃ is about 230 ~ 240 days, and the active accumulated temperature is 5 100 ~ 5300℃. The annual average precipitation is1100 ~1300mm, and the precipitation from April to September with high temperature accounts for about 70% of the annual precipitation.

Hanjiang river basin is an important channel for cold air to go south, and Jianghan plain bears the brunt. Low humidity and rainy weather often occur in spring and autumn, which makes the probability of dry seedling rot and empty shell rate of late rice in the second season higher. In case of years with long plum rains and heavy rains, early summer is prone to floods; Midsummer is often controlled by subtropical ridge; There are many sunny days in autumn and many droughts in summer and autumn. 、

Baidu Encyclopedia-Jianghan Plain