I. Basic concepts
1. Jiangxi Province, the provincial administrative region of China, is also called Jiangxi and Poyang for short. It is the "land of plenty" in the south of the Yangtze River, which was called "Wu Tou Chu Wei, Hu Yue Min Ting" in ancient times. In 733 AD, Emperor Xuanzong of the Tang Dynasty set up a west road in the south of the Yangtze River, which made it a province name, and because the largest river in the province was Ganjiang, it was called Ganjiang for short.
2. Jiangxi Province is located between 24 29 ′14 ″ north latitude and 30 04 ′ 41″ east longitude,113 34 ′ 36 ″ to1/8. Jiangxi province covers an area of166,900 square kilometers, governs 1 1 prefecture-level cities and 100 counties (cities, districts), and is the capital of Nanchang.
Two. topography
Jiangxi is dominated by hills and mountains, and the basins and valleys are widely distributed, belonging to subtropical warm and humid monsoon climate. There are many rivers and lakes, with Poyang Lake as the center and a centripetal water system. It is also one of the provinces with a large distribution area of red soil in southern China. The vegetation is mainly evergreen broad-leaved forest, with typical subtropical forest plant community. Geographically, bounded by Jinjiang-Xinjiang line, it belongs to Jiangnan uplift of Yangtze paraplatform in the north and South China fold system in the south. At the end of Silurian, they were merged by the late Caledonian movement, and then they were reformed by Indosinian movement, Yanshan movement and Himalayan movement for many times, forming a series of northeast-southwest structural belts. A large number of granites invaded the south, 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.