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There are two main reasons for the formation of the Yellow River as an "above-ground river". First, the river water contains too much sediment. The middle reaches of the Yellow River flow through the Loess Plateau.
A large amount of loess with loose soil flows into the river, making the Yellow River water extremely high in sediment. Second, the lower reaches of the Yellow River flow through the plains, the flow rate is slow, and the river sand gradually silts up on the bank, forming an "above-ground river" with the riverbed of the Yellow River higher than the riverbank.
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The lower reaches of the Yellow River became the main reason for the above-ground rivers:
1. Due to the serious destruction of vegetation on the Loess Plateau in the middle reaches of the Yellow River, a large amount of soil erosion has been injected into the Yellow River, which has increased the sediment content of the Yellow River to the lower reaches of the Yellow River.
2. As the lower reaches of the Yellow River enter the North China Plain, the terrain is flat, the river channel widens, and the water flow slows down, resulting in a large amount of sediment deposits, which gradually raises the riverbed over the years to form an "above-ground river".
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When the Yellow River flows downstream, due to the flat terrain and reduced terrain, the river channel widens, the water flow slows down, and the sediment sediment riverbed continues to rise. Rivers with river beds above the ground on both banks, also known as "above-ground rivers", have severe soil erosion in this watershed; When the Yellow River flows through the Loess Plateau, a large amount of sediment is carried away due to the high slope of the riverbed, the fast flow rate, and the poor vegetation conditions of the road section through which it passes.
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When the Yellow River enters the lower plains, the river channel widens, the slope of the riverbed slows down, the water flow slows down, and the sediment carried by the river water is deposited, so that the riverbed is gradually raised, and the people are forced to continuously raise the embankment, and the Yellow River becomes an "above-ground river".
A river with a riverbed higher than the ground on both sides of the river, also known as an "above-ground river". The river basin is open in the middle and lower reaches of the river valley, where the sediment is piled up in large quantities, the riverbed is constantly raised, and the water level rises accordingly. In order to prevent water damage, the embankments on both sides of the bank continue to rise, and over time, the riverbed rises above the ground on both banks, becoming a "hanging river".
The Yellow River is the main birthplace of Chinese civilization, and the Chinese call it the "Mother River". The Yellow River is an "above-ground river", the middle and upper reaches of the Yellow River are mainly mountainous, and the middle and lower reaches are mainly plains and hills. Because the middle section of the river flows through the Loess Plateau region of China, it carries a large amount of sediment, so it is also known as the river with the most sediment content in the world.
But in Chinese history, the diversion of the lower reaches of the Yellow River has had a huge impact on human civilization.
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Hello, glad to answer for you!
Your question is: the main reason why the lower reaches of the Yellow River have become "above-ground rivers".
Answer: Due to the serious destruction of vegetation on the Loess Plateau in the middle reaches, a large amount of soil erosion is caused by the flow of water into the Yellow River, which is the Yellow River's water with a large sediment content to the downstream areas. As the river widens and the water flow slows, a large amount of sediment is deposited.
Over the years, the riverbed has gradually been raised, forming an "above-ground river".
Hope this answer is helpful to you. Thank you!
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1. Due to the serious destruction of vegetation on the Loess Plateau in the middle and middle reaches of the Yellow River, a large amount of soil erosion is injected into the Yellow River, which increases the sediment content of the Yellow River to the downstream areas.
2. Due to the entry of the lower reaches of the Yellow River in Zaozhi Mountain, the terrain is flat, the river channel widens, and the water flow becomes slower, resulting in a large amount of sediment deposits, which gradually raises the riverbed over the years to form an "above-ground river".
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The main reason why the lower reaches of the Yellow River have become above-ground rivers is that the downstream slope is gentle and a large amount of sediment is deposited on the river bottom. The vegetation of the Loess Plateau in the middle reaches is seriously damaged, causing a large amount of soil erosion and flowing into the Yellow River, which has a great sediment content and reaches the downstream areas. As the river widens and the water flow slows, a large amount of sediment is deposited.
Over the years, the riverbed has gradually been raised, forming an "above-ground river". The main reason why the lower reaches of the Yellow River have become above-ground rivers is that the downstream slope is gentle and a large amount of sediment is deposited on the river bottom. The vegetation of the Loess Plateau in the middle reaches is seriously damaged, causing a large amount of soil erosion and flowing into the Yellow River, which has a great sediment content and reaches the downstream areas.
As the river widens and the water flow slows, a large amount of sediment is deposited. Over the years, the riverbed has gradually been raised, forming an "above-ground river".
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