The topographic area through which the Yellow River flows in turn, and what is the topographic area

It flows through Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan, and Shandong, and the topographic area is the Qinghai-Tibet Plateau-Loess Plateau-North China Plain, and there is no Inner Mongolia Plateau.

In Lanzhou's "first bridge of the Yellow River", the section of the Yellow River above Hekou Town, Tuoketuo County, Inner Mongolia is the upper reaches of the Yellow River. The total length of the upstream section is 3,472 kilometers, and the basin area is 10,000 square kilometers, accounting for the total area of the Yellow River. The total drop of the upstream section is 3496 meters, and the average ratio is 10; There are 43 large tributaries (with a basin area of more than 1,000 square kilometers) flowing into the river section, accounting for 54% of the total runoff. The annual sediment volume of the upper river section accounts for only 8% of the annual sediment volume of the whole river, and the water is more and less sand, which is the clear water of the Yellow River.

The upstream river channel is controlled by the Anima Qing Mountain, the Xiqian Mountain, and the Qinghai Nanshan Mountain, and bends in an S-shape. The upper reaches of the Yellow River can be divided into three parts: the source section, the canyon section and the alluvial plain according to the different characteristics of the river channel.

From Qinghai Kariqu to Qinghai Guide Longyang Gorge, the above part is the source section of the river. The source section of the river starts from Kariqu, passes through Xingsuhai, Zhaling Lake and Ngoling Lake to Maduo, bypasses Animaqing Mountain and Xilian Mountain, and crosses Longyang Gorge to reach Qinghai Guide. Most of the rivers in this section flow through the plateau of three or four thousand meters, the river twists and turns, the two banks are mostly lakes, swamps, grass flats, the water quality is relatively clear, the water flow is stable, and the water yield is large.

There are Zhaling Lake and Ngoring Lake in the river section, both of which have an altitude of more than 4,260 meters above sea level and a water storage capacity of 4.7 billion cubic meters and 10.8 billion cubic meters respectively, making them the largest plateau freshwater lakes in China. Between Maduo in Qinghai and Maqu in Gansu, the Yellow River flows through the ancient basins and low hills between Bayan Kala Mountain and Animaqing Mountain, and most of the river sections have wide valleys and occasionally a few canyons. Between Maqu in Gansu Province and Longyang Gorge in Guide, Qinghai, the Yellow River flows through high mountains and valleys, with turbulent water flow and abundant hydraulic resources.

The Bai River and Hei River, tributaries originating in Minshan, Sichuan, flow into the Yellow River in this section.

From Qinghai Longyang Gorge to Ningxia Qingtong Gorge, part of the canyon section. This section of the river flows through the mountains and hills, and due to the different rock properties, it forms a situation of canyon and wide valley: a canyon is formed in the hard gneiss, granite and metamorphic rock sections of the Nanshan system, and a wide valley is formed in the loose sand shale and red rock series sections.

There are 20 canyons such as Longyang Gorge, Jishi Gorge, Liujia Gorge, Bapanxia Gorge, Qingtong Gorge and so on in this section, both sides of the canyon are cliffs, the river bed is narrow, the river channel ratio is large, and the water flow is turbulent. This section between Guide and Lanzhou is one of the three tributaries of the Yellow River, with important tributaries such as Tao River and Huangshui flowing in, which greatly increases the water volume of the Yellow River. The main stream from Longyang Gorge to Ningxia is a "rich mine" area of the Yellow River's hydropower resources and one of China's key hydropower bases.

From Qingtongxia in Ningxia to Hekou Town in Tuoketuo County, Inner Mongolia, part of the alluvial plain section. After exiting the Qingtong Gorge, the Yellow River flows northeast along the northwest boundary of the Ordos Plateau, and then reaches Hekou Town in the east. Most of the area along the river is desert and desert steppe, basically no tributary injection, the main stream riverbed is gentle, the water flow is slow, and there are large alluvial plains on both banks, namely the famous Yinchuan Plain and Hetao Plain.

There are floods and floods in the river plains to varying degrees. Hetao Plain starts from Ningxia Xiahe River in the west, reaches Hekou Town in Inner Mongolia in the east, is 900 kilometers long, 30 50 kilometers wide, is a famous irrigation area of the Yellow River, has a long history of irrigation, since ancient times there is a saying that "the Yellow River is harmful, only one set of riches".

The topographic areas of the main stream of the Yellow River are: Qinghai-Tibet Plateau, Loess Plateau, Inner Mongolia Plateau, and North China Plain in order of upstream to downstream.

The Yellow River flows through the Tibetan Plateau, the Inner Mongolia Plateau, the Loess Plateau, and the North China Plain.

The Yellow River originates in the Bayankala Mountains of Qinghai Province of the People's Republic of China, flows through nine provinces and regions: Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong, and finally empties into the Bohai Sea in Kenli County, Dongying, Shandong Province.

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 importance of the Yellow River to China:

1. The Yellow River shows the development process of ancient Chinese civilization.

In ancient times, the climate in the middle and lower reaches of the Yellow River was mild and rainfall was abundant, which was suitable for primitive human survival. The Loess Plateau and the alluvial plain of the Yellow River have loose soil and are easy to cultivate, which is suitable for the development of primitive agriculture and animal husbandry. The characteristics of loess are conducive to the ancestors to dig holes and live together.

The special natural geographical environment has provided better conditions for the development of China's ancient civilization. As early as 1.1 million years ago, the "Lantian people" lived in the Yellow River Valley. There are also "Dali people", "Dingcun people", "Hetao people" and so on also live and breed in the basin.

2. The Yellow River is the "root" of our descendants of Yan and Huang

More than 6,000 years ago, agricultural activities began in the basin. About 4,000 years ago, a number of blood-related clans and tribes were formed in the basin, among which the two major tribes of Yandi and Huangdi were the most powerful. Later, the Yellow Emperor achieved the status of the leader of the alliance and merged with other tribes to form the "Huaxia Clan".

Later generations regarded the Yellow Emperor as the ancestor of the Chinese nation.

In Xinzheng City, Henan Province, the birthplace of the Yellow Emperor, there is the Yellow Emperor's Palace, and in Huangling County, Shaanxi Province, there is the Yellow Emperor's Mausoleum, and the descendants of Yan and Huang all over the world regard the Yellow River Valley as the cradle of the Chinese nation, call the Yellow River "Mother River", the "Four Sects", and regard the Yellow Earth as their "root".

The Yellow River flows through nine provinces (autonomous regions): Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong, and finally flows into the Bohai Sea.

The Yellow River belongs to the temperate monsoon climate zone, with high temperature and rain in summer, cold and little rain in winter, and the river recharge type is rainwater recharge, with large runoff, obvious flood season and dry season, and large seasonal changes. The Yellow River flows through the Loess Plateau and carries a large amount of sediment and sediment downstream.

The Yellow River is located in the north of the Huai River in the Qinling Mountains, and the temperature in winter is below 0°, with ice periods and floods. The Yellow River flows through the three major ladders of China, and is very rich in water energy resources.

The characteristics of the Yellow River basin are as follows:

The sunshine conditions in the Yellow River Basin are relatively sufficient in the whole country, and the annual sunshine hours are generally 2000 3300 hours. The annual sunshine percentage is mostly between 50% and 75%; It is second only to the Qaidam Basin, which has the most abundant sunshine, and is generally about l times more than the vast area of the Yangtze River basin south of the Yellow River.

The total solar radiation in the Yellow River Basin is in the middle of the country, with 130 160 kcal square centimeter-year in the area north of 37°N latitude and 103°E west of longitude. Although it is not as strong as the southwest of China, especially the Qinghai-Tibet Plateau, it is generally more than the northeast and the south of the Yellow River, and is a strong radiation area in the eastern part of China.

The upper reaches of the Yellow River: the mountains are high and steep, the drop is large, and there are abundant water resources. After the Yellow River flows out of Qingtongxia, its terrain is flat and open, and it enters the Ningxia Plain and the Hetao Plain of Inner Mongolia.

It is crisscrossed by canals and has become one of the earliest agricultural development zones in the upper reaches of the Yellow River.

Midstream: In summer and autumn, there are many heavy rains, abundant sand sources, more water and more sand, large flood peak flow, high sediment content, becoming a world-famous sandy river, river siltation and erosion of river sections interchange, canyons and wide valleys alternate.

Downstream: It flows through the North China Plain from west to east, and the slope of the Shihong River channel is small and the water flow is gentle. In addition, the river channel is wide and shallow, the sediment is seriously silted, the riverbed is gradually raised, the two banks are almost all by the embankment as a barrier, the river beach is generally about 2-5 meters higher than the ground on both banks, and some are as high as 10 meters, which is the world's famous "hanging river".

Which provinces does the main stream of the Yellow River flow through in China, and is there your hometown?

The above-ground river is in the Inner Mongolia section of the Yellow River in the middle and upper reaches of the Yellow River. The lower reaches of the Yellow River hovering in the North China Plain, the riverbed is wide and flat, the water flow is slow, and a large amount of sediment is deposited, and the riverbed is more than 4 to 5 meters higher on average, becoming a world-famous above-ground river. The Inner Mongolia section of the Yellow River, located in the middle and upper reaches of the Yellow River, is more than 890 kilometers long.

According to hydrological stations along the line, the Inner Mongolia section of the Yellow River has risen by more than 2 meters in the past 10 years, becoming another "above-ground hanging river" after Henan and Shandong provinces downstream.

The hazards of the Yellow River on the groundThe Yellow River flows out of the Loess Plateau and flows into the plain area, due to the widening of the river channel, the slower slope and the slower flow rate, a large amount of sediment is deposited on the river bottom, so that the riverbed is gradually raised and becomes an "above-ground river". The riverbed is constantly rising, and the river water can only be constrained by building embankments, and in case of heavy rain, the river water rises sharply, and the embankments on both sides of the river are in danger of bursting at any time and anywhere. For a long time, embankments have been built to contain flooding, resulting in an increasing difference in elevation between the riverbed and the ground on both sides.

Loess plateau.

The Yellow River originates in the Bayankra Mountains, flows from west to east through nine provinces and regions: Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Baishanxi, Henan, and Shandong, and finally flows into the Bohai Sea.

The main topographic areas through which it flows are: Qinghai-Tibet Plateau, Inner Mongolia Plateau, Loess Plateau, and North China Plain. The topographic area through which the middle reaches of the Yellow River flows is the Loess Plateau.

Middle reaches of the Yellow River:

The Yellow River runs from Hekou Town to Taohuayu in Zhengzhou City, Henan Province. The middle reaches of the river are kilometers long, the basin area is 10,000 square kilometers, accounting for the whole basin area, the drop is 890 meters, and the average ratio is reduced.

The Yellow River turns sharply southward from Hekou Town, until the entrance of Yu, the flow goes straight down 725 kilometers, and the water surface falls 607 meters, which is lower than that. The rolling yellow stream, rushing endlessly, divides the Loess Plateau into two halves and forms a canyon-shaped river channel. With the river as the boundary, the left bank is Shanxi Province, and the right bank is Shaanxi Province, so it is called Jinshan Canyon.

The above content reference: Encyclopedia - Yellow River.