Where does Jiangnan mean?

"Jiangnan" has always been a constantly changing and flexible regional concept. Geographical Jiangnan in a narrow sense refers to Nanjing, Zhenjiang, Changzhou, Wuxi, Suzhou, Hangzhou, Huzhou, Jiaxing, Shaoxing, Ningbo, Shanghai and other places near the Taihu Lake basin south of the Yangtze River.

The broad scope of Jiangnan also includes Nantong (Tongzhou), Yangzhou and Taizhou in Jiangsu; Zhejiang Jinhua, Lishui, Zhoushan, Taizhou, Quzhou and Wenzhou; Huangshan, Wuhu, Xuancheng, Maanshan, Chizhou and Tongling in southern Anhui; Wuyuan in northeast Jiangxi, etc.

The meaning of "Jiangnan" in ancient literature is varied. It is often a word juxtaposed with other regional concepts such as "Jiangbei" and "Zhongyuan" in the Han Dynasty, and it is ambiguous. Historically, Jiangnan is not only a natural geographical area, but also a social and political area.

Jiangnan in a broad sense includes the areas south of the Yangtze River in Shanghai, Jiangsu, Zhejiang, Anhui, Jiangxi, Hubei and Hunan. In a broad sense, Jiangnan has a vast territory and diverse landforms, so it is often regarded as "Great Jiangnan", which is roughly consistent with the meteorological scope of Jiangnan. Four rice markets and three famous buildings in the south of the Yangtze River are all within the scope of the south of the Yangtze River.

This area includes three famous mountains, three rivers and three lakes-Qiantang River and Taihu Lake in Huangshan, Ganjiang River and Poyang Lake in Lushan, Xiangjiang River and Dongting Lake in Hengshan. These three rivers and lakes are the cradles of Wuyue culture, Ganpo culture and Huxiang culture respectively. ?

The definition of "Great Jiangnan" begins with the ancient division (Jiangnan Road) and is often described in literary works. For example, Du Fu's Random Encounter Li Guinian was written in Changsha. The Jiangnan referred to in the weather forecast is roughly the Jiangnan zone in a broad sense.

Climatic characteristics: Description of the first-class meteorological geographical area in China: Jiangnan area: Hubei, Hunan, Jiangxi, Zhejiang, Anhui, Jiangsu, Shanghai and northern Fujian (extending eastward from Nanling).

Description of national second-class meteorological geographical division: Jiangnan area: divided into south and north by the basic Zhejiang-Jiangxi and Hunan-Guizhou railway lines, and divided into east, middle and west by the north-south extension line between northeast Jiangxi and Zhejiang and the boundary line between Jiangxi and Hunan.

Jiangnan is located in the transition zone from subtropical zone to warm temperate zone, with warm and humid climate and distinct seasons, which is very suitable for the growth of various crops and the survival of human beings. Although the climate in the south of the Yangtze River is not invariable in history, according to some data, the sudden interruption of Liangzhu culture in Taihu Lake Basin is actually directly related to the catastrophic natural floods caused by land subsidence, rainfall increase and sea level rise in Taihu Lake Basin.

Many Liangzhu cultural sites, such as Wujiang Meinian, Yuanjiadai and Dasanjin, are generally covered with a layer of peat, indicating that this place has been flooded. In addition, according to Zhu Kezhen's book "Preliminary Study on Climate Change in China in the Last Five Thousand Years", the climate in China has a general trend of gradually changing from warm and humid to cold and dry. But overall, the climate change in Jiangnan area is smaller than that in other areas.

The above contents refer to Baidu Encyclopedia-Jiangnan.