What are the climatic characteristics of Jiangxi Province?

Climate characteristics: four distinct seasons, high temperature and rainy summer, mild and humid winter.

Description:

The climate of Jiangxi Province belongs to the warm and humid monsoon climate in the middle subtropical zone, and the annual average temperature is about 16.3- 19.5℃, which generally rises from north to south. The annual average temperature in northeastern Jiangxi, mountainous areas in northwestern Jiangxi and Poyang Lake Plain is 16.3- 17.5℃, and that in southern Jiangxi Basin is 19.0- 19.5℃.

The summer is long, and the average temperature in July is 28.0-29.8℃ except for the surrounding mountainous areas in the province. The extreme maximum temperature is almost above 40℃, which is one of the hottest areas in the middle reaches of the Yangtze River.

Winter is short, 1 the monthly average temperature is 3.6-5.0℃ in Poyang Lake Plain in northern Jiangxi and 6.2-8.5℃ in Gannan Basin. The province is warm in winter and hot in summer, with a frost-free period of 240-307 days.

The daily average temperature is stable above 10℃ for 240-270 days, and the active accumulated temperature is 5000-6000℃, which is very beneficial to the development of triple cropping system of double-cropping rice and temperate subtropical economic trees. Only the northern terrain is open, and the extreme cold wave has a negative impact when it invades the south.

Extended data:

Topography of Jiangxi Province:

The topography of Jiangxi province is dominated by hills and mountains in the south of the Yangtze River. Basins and valleys are widely distributed and slightly plain. Geographically, it is bounded by Jinjiang-Xinjiang line.

The northern part belongs to Jiangnan uplift of Yangtze paraplatform, and the southern part belongs to South China fold system. The late Caledonian movement at the end of Silurian brought them together, and then they were reformed many times by Indosinian movement, Yanshan movement and Himalayan movement, forming a series of northeast-southwest tectonic belts.

A large number of granites invaded the southern region, and red clastic rocks from Cretaceous to Paleogene were deposited in the basin, with gypsum and rock salt deposits.

A faulted basin centered on Poyang Lake has been formed in the northern region, and Quaternary laterite has accumulated in the piedmont area at the edge of the basin. This is the geological basis that causes the topography of the whole province to tilt to the north.

Geomorphologically, it belongs to the main part of Jiangnan hills. The province is surrounded by mountains in the east, west and south, with hills and valley plains in the middle and Poyang Lake plain in the north.

Poyang Lake Plain and Hubei Lake Plain are both subsidence areas in the middle and lower reaches of the Yangtze River, which are formed by siltation of the Yangtze River and five major rivers in the province. It is narrow in the north and wide in the south, covering an area of nearly 20,000 square kilometers.

The surface is mainly covered with laterite and river alluvium, and laterite has been cut and slightly undulating. Lake fields and lakes are also widely developed in the lakeside area. The water network is dense, the river bends are intertwined, and the lakes are dotted.

South-central Jiangxi is dominated by hills, and most of them are composed of soft rocks, such as red sand shale and some phyllite. After weathering and erosion, it is low and round, 200 meters above sea level, close to the high hills in the marginal mountainous areas, and about 300-500 meters above sea level. Its relative height is only 50-80 meters, except for 100 meters in the south.

Between the mountains, with basins sandwiched between them, most of them extend in strips along the river. The larger ones are Ji Tai Basin and Ganzhou Basin. Most of the mountains are distributed on the edge of the province.

There are mainly: Huaiyushan in the northeast, Wuyishan in the east extending along the border between Jiangxi and Fujian, Dayuling and Jiulian Mountains in the south, Mufu Mountain, Jiuling Mountain and Luoxiao Mountain (including Wugong Mountain, Wanyang Mountain and Zhuguang Mountain) in the northwest and west, which have become the boundary mountains and watersheds between Jiangxi and neighboring provinces.

The direction of the mountain range is mainly northeast-southwest, which controls the development of the main water systems and basins in the province. Most mountainous areas are composed of ancient metamorphic rock series and granite, with steep peaks and thick sediments. Huanggang Mountain (2157m) is the highest point in the province.

References:

Baidu encyclopedia-Jiangxi province