Is the Qingjing Yellow River good water now, and how does the water of the Yellow River come from?

The water of the Yellow River came from the sky, Li Bai's "Will Enter the Wine".

This year, there has been no major rainfall process from spring to now, which affects the water potential of Hukou Waterfall in the Yellow River. It's a little better to see in autumn than it is now.

Now is the time when the amount of water is minimal, and it is impossible to talk about spectacularness; You can refer to the following information——

The average annual flow of the Yellow River in the Hukou section is 1,000 cubic meters per second, and in the spring sowing irrigation season from May to June, the upstream reservoir stores water, and a large amount of river water is extracted for irrigation, which is the period with the lowest amount of water in the whole year, and the average monthly flow is only 250-300 cubic meters per second. July to September is the rainy season, the precipitation area is large, the duration is longer, the rainfall intensity is also larger, it is the flood period of the Yellow River, the flow can reach more than 2500 cubic meters per second. Because the Hukou section mainly belongs to the loess hilly and gully area, the surface is undulating and the water collection time is short, and the water and sand enter the Yellow River after the heavy rain, forming a flood with extremely high sediment content, which has a strong erosive force on the riverbed.

In winter, the river freezes, but the water under the ice is still the same, with an average flow of between 300 and 500 cubic meters per second.

There are people in the Yellow River basin who drink the water of the Yellow River, such as some Henan, Shandong, Shanxi, and Shaanxi, but Hebei cannot eat the water of the Yellow River, but eats the water of the Danjiangkou Reservoir.

The water of the Yellow River is yellow because it is mixed with a large amount of yellow sand.

The upper reaches of the Yellow River are the famous Loess Plateau, which is typically characterized by a deep loess layer, loose and barren soil, lack of vegetation, and lack of vegetation for perennial plants. The middle reaches of the Yellow River flow through the Loess Plateau, where soil erosion is serious, the loess soil is loose, there are many vertical fissures, and many materials are easy to melt with water. Therefore, the water of the Yellow River will be relatively clear in the middle reaches, but it is still yellow overall.

The Yellow River will rise and flood, and after many years of governance and damming in the middle and lower reaches of the Yellow River after liberation, it has not yet flooded. The Yellow River originates in the Bayanhara Mountains of Qinghai, the upstream water is not yellow, and after the high source of loess (rain erosion, soil erosion) a large amount of sand falls, the middle and lower reaches become the rolling Yellow River.

The upper reaches of the Yellow River are known as the Loess Plateau, which is characterised by a deep loess layer and loose and barren soil, lacking vegetation, especially those with perennial plants, such as forests.

The water of the Yellow River comes from the rainfall of this plateau, and the loess lacking vegetation will be washed into the Yellow River in large quantities, hence the name of the Yellow River because of the turbidity of the sediment.

On the corresponding Loess Plateau, there are countless gullies formed by rainwater erosion, which has become its unique geographical feature. Of course, after the Yellow River enters the middle reaches, its water also comes from the precipitation in the middle reaches, and the vegetation in the middle reaches is relatively good, so the water of the Yellow River will be relatively clear in the middle reaches. But overall it's still yellow.

Let's talk about why the Yellow River is yellow.

Many years ago, the water of the Yellow River was not yellow, and its name was not called the Yellow River, it was called the Great River. According to historical records, during the Tang Dynasty, people found that the water of the river gradually turned yellow, so it was renamed the Yellow River. The Yellow River is the nickname of the great river.

At that time, people may not have imagined that the name of the Yellow River has continued to this day. The birthplace of the Yellow River is located at the northern foot of Bayankala Mountain in Qinghai Province, passing through 9 provinces and regions, with a total length of more than 54d0 kilometers, which is one of the longest rivers in the world. The water in the upper reaches of the Yellow River is very clear, but when it flows to the Loess Plateau, it is dyed yellow by the Loess Plateau.

If you scoop a bowl of water from the Yellow River, you can precipitate half a bowl of sediment, so there is a folk saying that "a bowl of yellow water and half a bowl of sand", in fact, the Yellow River water turns yellow by the sediment of the Loess Plateau. It seems that the yellowing of the Yellow River is caused by human beings violating the laws of nature by wantonly exploiting grasslands and cutting down forests.

The Yellow River originates at the northern foot of Bayankala Mountain in Qinghai Province, flows through 9 provinces and regions, with a total length of 5,464 kilometers. The Yellow River and its tributaries have nurtured countless sons and daughters of China, and the Yellow River Basin is known as the birthplace of the Chinese nation. A long time ago, the water of the Yellow River was not very yellow, and its name was not called the Yellow River, but the Great River.

In the Tang Dynasty, people saw that the river was yellow, so they gave it the nickname "Yellow River", but they did not expect that the nickname eventually replaced its original name. During the Zhou and Qin dynasties, most of the Loess Plateau was forested, and the water of the Yellow River was relatively clear. With the development of the Loess Plateau, the forests on the mountains are gradually cut down, and every time it rains, the rain carries the soil that has no ability to resist, and flows from the mountains to the bottom of the mountains, from the small rivers to the big rivers, this situation is becoming more and more intense, making the sediment content of the Yellow River water increasing day by day, and finally causing the Yellow River water to become turbid and yellow.

This is the root cause of the Yellow River's yellowing of water. The reason for the turbidity of the Yellow River is that there is a large amount of sediment in the water, and there are only two ways to make the Yellow River clear: First:

Afforestation and expansion of vegetation cover in the middle and upper reaches of the Yellow River can effectively prevent soil erosion and reduce the sediment content in the Yellow River. Ground double: reduce the flow rate of water, because the flow speed is proportional to the sixth power of the weight of sediment in the water, but the flow speed is related to the difference between the upstream and downstream, and people cannot change it, this is only a theoretical method.

3.The construction of reservoirs can change and regulate the speed of local water flow, and can effectively reduce the sediment content in the Yellow River.

When the Yellow River passes through the Loess Plateau, a large amount of sediment is washed away from the Loess Plateau, so it becomes yellow when it reaches the lower reaches.

The water in the ancient Zonglie Basin at the northern foot of Bayankala Mountain on the Qinghai-Tibet Plateau, the birthplace of the Yellow River, was originally clear, but the soil was brought into the water when it flowed through the loess high slope, because the land in the area of the loess high slope was soft and easy to be washed away by the current, so it became a yellow, pure natural phenomenon. I hope the landlord will be satisfied. Thank you.

The middle stream passes through the Loess Plateau, and the soil erosion is serious, and the sediment content of the river water surges, causing the river to turn yellow.

Because the area through which it flows is the Loess Plateau, and because of the severe soil erosion in the Loess Plateau, all the soil is carried away by the water, so the water becomes this color. It's just that because the bottom of the water is full of loess and sediment, the color of the water has also changed.

The yellowing of the Yellow River is caused by the silt of the Loess Plateau.

The Yellow River originates in the ancient Zonglie area at the northern foot of the Bayankala Mountains on the Qinghai-Tibet Plateau, and flows all the way down from its source and receives many small streams before flowing into the Yellow River's headwaters Zhaling Lake and Ngoring Lake, and then forming a main stream surging eastward. The swampy steppe area was once home to thousands of highland lakes. In recent years, due to the impact of global warming, the headwaters of the Yellow River have experienced extremely abnormal dry weather for many years, resulting in accelerated degradation and desertification of local grasslands and serious drying up of rivers and lakes.

Soil erosion in the upper and middle reaches of the Yellow River is very serious (the middle reaches have to pass through a large loess plateau, where the soil is loose and thick, and when it rains heavily, the rain washes the loess into the river, and the large and small tributaries carry mud and sand and flow into the Yellow River), resulting in serious siltation of the lower reaches of the river, and the riverbed is raised by about 10 centimeters per year on average. The average sediment transport volume of Sanmenxia Station of the Yellow River is about 1.6 billion tons for many years, and the average sediment volume is 35kg m3, ranking first among the major rivers and unique among the rivers in the world. At the same time, the sediment particles of the Yellow River are very fine, and sometimes the river water is even in a muddy state, which is really difficult to wash off on the body!

60% of the Yellow River's water comes from Lanzhou and the northern foot of the Qinling Mountains, and more than 90% of the sediment mainly comes from the area between Hekou Town and Longmen and the upper reaches of the Jing River, Beiluo River and Wei River. 60% of the annual water volume and 80% of the sediment volume are concentrated in the flood season, which in turn is mainly concentrated in a few heavy rains and floods. The concentration of water and sediment distribution has made it very difficult to develop and utilize the water resources of the Yellow River and to flood control in the lower reaches.

The water of the Yellow River itself is clear, but when the Yellow River reaches the middle reaches, the middle reaches have a large drop, the water is rapid, and the river water carries a large amount of yellow sand, so it turns yellow.

The Yellow River, a major river in northern China, has a total length of about 5,464 kilometers and a basin area of about 752443 square kilometers. It is the fifth longest river in the world and the second longest river in China.

The Yellow River originates from the Zagqu of the Chahassila Mountains of the Bayankala Mountains of the Qinghai-Tibet Plateau in Qinghai Province, the Kariqu of the northern foothills, and the Liequ of the ancient sect of the stars in the western part of the Haixi"Several"Glyph. From west to east, it flows through 9 provinces (autonomous regions) of Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong, and finally flows into the Bohai Sea.

The middle and upper reaches of the Yellow River are mainly mountainous, and the middle and lower reaches are dominated by 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.

The Yellow River is the main birthplace of Chinese civilization, as the Chinese call it"Mother River"。Every year, 1.6 billion tons of sediment are produced, of which 1.2 billion tons flow into the sea, and the remaining 400 million tons remain in the lower reaches of the Yellow River for many years, forming an alluvial plain that is conducive to cultivation.

The gestation, birth and development of the Yellow River are subject to the geological processes in the geohistorical period, with the tectonic movement caused by crustal changes as the external force, and the erosion, transport and accumulation under hydrological conditions as the internal force. In the course of the history of Chenghe, the movement has been continuous and advancing with the times. Soil erosion on the Loess Plateau and sediment accumulation in the lower reaches of the Yellow River have been going on since prehistoric geological times, and the impact of human activities has been increasing since then.

According to various studies, the PaleoYellow River has three stages of development: the Early Pleistocene from the Tertiary to the Quaternary is the gestation period of the PaleoYellow River. In the Middle Pleistocene of the Quaternary Period (1.15 million years ago and 100,000 years ago), the ancient Yellow River was born and grew in the period.

In the Late Pleistocene (100,000 years ago, 10,000 years ago), the Yellow River formed an ocean system.

During the historical period, the river course of the Yellow River in the upper and middle reaches of the plain has also evolved, and some of the changes are still great. For example, the Hetao section of Inner Mongolia, before 1850, it is mainly divided into two branches, the north branch is the main stream, the foot of the Yin Mountain is called the Wujia River, and the south branch is the Yellow River today. In 1850, the lower reaches of the Wujia River north of Xishanzui were silted up and cut off for about 15 kilometers, and the south branch became the mainstream, and the north branch became the retreat canal in the Houtao irrigation area.

The swing of the Longmen Tongguan river is also larger. However, the evolution of these sections has little impact on the development of the Yellow River as a whole. The course change of the Yellow River mainly occurs in the lower reaches.

Historically, the range of river changes in the lower reaches of the Yellow River has roughly reached the Haihe River in the north and the Jianghuai River in the south. According to historical records, the lower reaches of the Yellow River have flooded more than 1,500 times, and there have been more than 20 major diversions.

The Yellow River water in Lanzhou is indeed yellow, because the soil around Lanzhou is loose and the loss is serious, but the Yellow River in Lanzhou has not yet flowed to the real Loess Plateau, the lower reaches of Lanzhou flow through Ningxia, Inner Mongolia, and then flow through the Loess Plateau at the junction of Shaanxi and Shanxi, at this time it is the most serious time of soil erosion, the water is the most yellow, the sand content is the highest, and then through the Hukou Waterfall to the downstream Henan and Shandong.

Because the water of the Yellow River is mixed with a large amount of quicksand, it was not yellow before; Now, after you put a piece of Baise clothes in the Yellow River, you can't wash it off no matter how you wash it.

When the Yellow River flows down the Loess Plateau in the upper reaches, it is mixed with a lot of yellow sand, so it is turbid.

It is said that half of the bowl of water scooped from the Yellow River is sand.

Most of northern China drinks water from the Yellow River, and I haven't heard anything bad about it. If you feel that drinking directly is not very hygienic, drink treated tap water or install a water purifier yourself.

The middle reaches of the Yellow River flow through the Loess Plateau, and its tributaries bring in a lot of sediment, making it the most sediment-laden river in the world. The maximum annual sediment transport reached 100 million tons (1933), and the highest sediment content was 920 kilograms and cubic meters (1977). The average sediment transport capacity of Sanmenxia Station is about 1.6 billion tons for many years, and the average sediment content is 35 kilograms of cubic meters.

Because it has a large amount of sediment in it, and it is not simple sediment, it is loess for thousands of years, the flow speed of the Yellow River is very slow, and the loess will not be deposited but will continue to flow with the water, so it is so yellow.

It's because the yellow sand on the banks of the Yellow River has dyed the water yellow.

Because on both sides of the Yellow River, the sediment from the high slopes of loess flows into the Yellow River.