How did 800-mile Dongting Lake evolve into a "river"?

Eight hundred miles of Dongting Lake evolved into? A river? Is it because the sediment at the bottom of Dongting Lake itself is accumulating more and more, and the Yangtze River Delta is expanding to the southeast, so the water also flows to the southeast? As time goes on, there are more and more Dongting Lake, because of the decrease of water? Narrow? It is the dry season of Dongting Lake. Although the basin area is getting bigger and bigger, it has evolved into? A river? .

Dongting Lake, which is famous at home and abroad, had many fantastic titles in ancient times. Yun Mengze? 、? Taihu Lake? 、? Sink the lake? An equal. The origin of its name can be traced back to Confucian classics such as Zhou Li and Erya, which all record today's Dongting Lake, that is? Cloud dream? Two words? Dream? Words have no special meaning in Chu dialect, but are just expressions? Lake ze? . Speaking of the cultural charm of Dongting Lake, I have to mention that it was written by Meng Haoran, a poet in the Tang Dynasty? Cloudy and foggy, hanging over Yueyang City? A beautiful sentence.

About the evolution of the famous Dongting Lake? A river? The reason is that Dongting Lake was still an insignificant small lake in the pre-Qin period, but under the crustal movement of nature, Yunmengze moved south and merged with many small lakes in the south, and finally it became Dongting Lake in 800 miles. During the Eastern Han Dynasty, there were more and more sediments and lakes around Dongting Lake? Shallow? . At this time, the Yangtze River Delta is also moving eastward and southward, so due to gravity, water keeps flowing eastward and southward, forming new waterways. Later, it flowed into the Dongting Lake Plain, joined the previous Yunmengze direction, and then evolved into a larger Dongting Lake. Time spans the Ming and Qing dynasties. At this time, due to the continuous reclamation of the Yangtze River basin by the working population in China, the environment has been destroyed, so the sediment concentration in the Yangtze River has increased greatly, and a large amount of sediment has been deposited on the lake bed, which is getting higher and higher. At this time, the area of the lake has to expand to the periphery. Due to the more and more serious pollution, Dongting Lake can no longer bear the huge amount of water, so a very magical phenomenon has appeared? Four mouths and four waters? . Today, with the continuous development of agriculture, Dongting Lake is in its? Old age Finally became? People retreat into the lake? This tragic situation has slowly evolved into? A river? .