How did the names Pearl River Delta and Yangtze River Delta come about?

The river carries sediment from upstream to downstream, and as the downstream riverbed grows larger, the flow rate gradually slows down, and the sediment in the river continues to accumulate in the river.

When the river flows into the sea, the flow of water is dispersed, the flow of water is suddenly reduced, and the tide inflows from time to time, which has the effect of blocking the river water, especially the sodium chloride dissolved in the seawater, causing the sediment suspended in the water to also precipitate. The sediment accumulates until it finally emerges from the water, and the river has to flow out on both sides, bypassing the sand piles. Because the frontal surface of the sand pile is directly impacted by the river, it is constantly eroded by the flowing water, and often forms a tip shape, while the back surface is relatively wide, making the beach a "δ" shape.

They were named "Delta".

The Yangtze River Delta and the Pearl River Delta get their name from the name of the river.

Generally, the estuaries of large rivers will form deltas due to the accumulation of sediment, and they are generally named according to the names of rivers.

Upstairs is the right solution! Supplement: Generally, the estuaries of large rivers will add to the rugged terrain of the original estuary due to the accumulation of sediment, and seize a part of the offshore area to form gentle sand accumulations, beaches or tidal flats, thus forming a delta similar to the plain.

This is more obvious in the Pearl River Delta, which is surrounded by hilly areas, and it is precisely because of the accumulation of sediment carried by the Pearl River that a large flat land is formed. The Yangtze River Delta and the Pearl River Delta get their name from the name of the river.

The Pearl River Delta was formerly known as the Yuejiang Plain. Located on the eastern coast of Guangdong Province, China, it is a general term for the large delta formed by the alluvium of the Xijiang River and the Beijiang River that make up the Pearl River, and the small delta formed by the alluvial formation of the Dongjiang River.

The Yangtze River Delta is the largest estuarine delta in China, which refers to the alluvial plain formed by the sediment of the Yangtze River east of Zhenjiang and Yangzhou, and is located in the southeast of Jiangsu Province, Shanghai and Hangjiahu area of Zhejiang Province.

The Yangtze River Delta stretches from the Tongyang Canal in the north, Hangzhou Bay in the south, Zhenjiang in the west, and the seashore in the east, including Shanghai, southern Jiangsu Province, northern Zhejiang Province and adjacent seas. With an area of about 99,600 square kilometers and a population of about 75 million, it is a large plain.

Yangtze River Delta region, referred to as Yangtze River Delta; Including Shanghai, Jiangsu Province, Zhejiang Province, Anhui Province, a total of 41 cities; Located in the lower reaches of the Yangtze River in China, bordering the Yellow Sea and the East China Sea, it is located at the intersection of rivers and seas, and there are many coastal ports along the river, which is an alluvial plain formed before the Yangtze River enters the sea.

By the end of 2019, the Yangtze River Delta region had a population of 100 million people and an area of 10,000 square kilometers. In 2019, the GDP of the Yangtze River Delta region was one trillion yuan; The urbanization rate of the permanent population is more than 60%, and with less than 4% of the country's land area, it has created nearly 1 4 percent of China's total economic output and 1 3 percent of its total import and export volume. In 2019, the density of the railway network in the Yangtze River Delta region reached 325 kilometers per square kilometer, which is twice the national average.

The Yangtze River Delta region is one of the regions with the most active economic development, the highest degree of openness and the strongest innovation ability in China, and has a decisive strategic position in the overall situation of national modernization and all-round opening up.

It is of great significance to promote the integrated development of the Yangtze River Delta, enhance the innovation and competitiveness of the Yangtze River Delta region, and improve the efficiency of economic agglomeration, regional connectivity and policy coordination to lead the high-quality development of the country and build a modern economic system.

The Yangtze River Delta region has a long cultural history, coupled with a well-developed water system and fertile land that is superior to China's agriculture and handicraft industry, so that it has initially formed a considerable urban agglomeration in the middle and late stages of China's feudal society.

The integrated development of the Yangtze River Delta region has been elevated to a national strategy. On December 1, the "Outline of the Yangtze River Delta Regional Integration Development Plan".

The "Outline" is a programmatic document to guide the integrated development of the Yangtze River Delta region at present and in the future, and it will bring major policy opportunities to the integrated development of the Yangtze River Delta.

According to this "Planning Outline,The planning scope of the "Yangtze River Delta region" referred to in the policyIt includes Shanghai, Jiangsu Province, Zhejiang Province and Anhui Province, with a total area of 10,000 square kilometers; EstablishmentThe central area, the ecological green integrated development demonstration zone, and the new area of the China (Shanghai) Free Pilot ZoneThree functional partitions:

The central area includes Shanghai, Nanjing, Wuxi, Changzhou, Suzhou, Nantong, Yangzhou, Zhenjiang, Yancheng and Taizhou in Jiangsu Province, Hangzhou, Ningbo, Wenzhou, Huzhou, Jiaxing, Shaoxing, Jinhua, Zhoushan, Bunian Taizhou in Zhejiang Province, and Hefei, Wuhu, Ma'anshan, Tongling, Anqing, Chuzhou, Chizhou and Xuancheng in Anhui Province.

The Yangtze River Delta Ecological Green Integrated Development Demonstration Zone includes Qingpu in Shanghai, Wujiang in Jiangsu and Jiashan in Zhejiang, covering an area of about 2,300 square kilometers.

At the same time, the "Outline" uses Shanghai Lingang and other areas as new areas of the China (Shanghai) Free Pilot Zone, creating a special economic functional zone that is in line with international rules and has more international market influence and competitiveness.