Information about the Yellow River should have a title

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 one of the longest rivers in the world and the second longest river in China.

The northern source of the Yellow River originates from the Zhaqu at the southern foot of the Chahasila Mountain, a branch of the Bayankala Mountains on the Qinghai-Tibet Plateau in Qinghai Province, the southern source originates from the Kariqu at the northern foot of the Gezigoya Mountain, the branch of the Bayan Kala Mountains, and the western source originates from the Yougu Zongliequ in the western part of the Xingzhu Haixi. It flows from west to east through 9 provinces (autonomous regions) of Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong, and finally flows into the Bohai Sea.

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.

The river originates in Bayan Kala Mountain, Qinghai, and its main stream runs through nine provinces and autonomous regions: Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan, and Shandong, with an annual runoff of 57.4 billion cubic meters and an average runoff depth of 79 meters. However, the amount of water is not as large as the Pearl River, there are 35 major tributaries along the way, the larger tributaries are in the upper reaches, there are Huangshui and Tao rivers, in the middle reaches there are Qingshui River, Fen River, Wei River, Qin River, and in the lower reaches there are Yi River and Luo River.

The lower reaches of the Yellow River basin are small because of the lack of lakes on both sides and the high riverbeds, and the few rivers that flow into the Yellow River.

From the source of the river to the mountainous and grassland plateau of Guide, it belongs to the Qinghai-Tibet Plateau, with an altitude of more than 3,000 meters, a mountain peak of more than 4,000 meters, and an altitude of 4,200 meters in the source of the river valley. Guide from the Mengjin River section is the Loess Plateau area, the Loess Plateau is the western slope of Luliang in the east, the Weihe Valley in the south, the Ordos Plateau in the north, and the Lanzhou Valley in the west; The altitude of the Loess Plateau is generally 1000 1300 meters, the terrain is undulating, the slope is steep and the ditch is deep, the ground slope of the gully is 15 20 degrees, the valley area accounts for 40 50%, the channel density is 3 5 kilometers square kilometers, and the cutting depth is more than 100 meters; Below Mengjin enters the North China Plain with low terrain, the altitude is not more than 50 meters, the river channel is flat after entering the downstream, the average ratio is only, the water flow is slow, a large amount of sediment is silted, and the riverbed is 4 5 meters above the ground; Due to the diversion of the Yellow River many times, the fan-shaped paleoriverbed and paleonatural embankments have been alluvial on the ground, and it has become an inclined plain with alternating distribution of slow hills and depressions, and the depressions are relatively open and flat.

The Yellow River is between 3000 and 1600 meters above sea level from Guide to Minhe territory, enters Gansu from Minhe Xiachuan Estuary, this section of the climate is mild and humid, has the reputation of the plateau small Jiangnan, the water flow is clear to the bottom, and there is the saying of "the Yellow River in the world is clear and clear". The Ningxia Plain in Ningxia and the Hetao Plain in Inner Mongolia are called Saishang Jiangnan because they are located in the valley area of the upper reaches of the Yellow River, with abundant water sources, convenient irrigation, developed agriculture, and abundant water and grass.

Major tributaries. The main tributaries of the Yellow River include the Bai River, the Hei River, the Huangshui River, the Zuli River, the Qingshui River, the Dahei River, the Kuye River, the Wuding River, the Fen River, the Wei River, the Luo River, the Qin River, the Dawen River, etc.

Among them, the Wei River is the largest tributary of the Yellow River.

Because the flood of the Yellow River carries a large amount of sediment, it is quickly deposited after entering the downstream plain area, and the main stream wanders in the flood area, people begin to build embankments to prevent floods, and the flood channel continues to silt up and rise, becoming an "above-ground river" higher than both banks. The drastic changes in the migration of the lower reaches of the Yellow River are unique in the world. According to written records, the Yellow River has been diverted several times.

The scope of river changes is 250,000 square kilometers from near Zhengzhou in the west, Tianjin in the north, and Jianghuai in the south. During the more than 1,700 years from the fifth year of King Ding of Zhou (602 B.C.) to the second year of Jianyan of the Southern Song Dynasty (1128), most of the migration of the Yellow River was in the area north of the current river, invading the Haihe River system and flowing into the Bohai Sea. For more than 700 years, from 1128 to 1855, the Yellow River was diverted and oscillated in the area south of the current channel, invading the Huai River system and flowing into the Yellow Sea.

In 1855, after the Yellow River burst at the east dam head of Lankao, Henan, it changed its current course and seized the Daqing River in Shandong to enter the Bohai Sea. Due to the continuous change and diversion of the lower reaches of the Yellow River, as well as the changes in sea transgression and retreat, the length of the river channel and the area of the basin in the lower reaches of the Yellow River are also constantly changing, which is one of the outstanding characteristics of the Yellow River that is different from other rivers. 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 existence.

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 relatively good 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 multiply in the river basin. A large number of ancient cultural sites such as Yangshao culture, Majiayao culture, Dawenkou culture, and Longshan culture are all over the river.

These ancient cultural relics are not only numerous and complete, but also continue to develop from far to near, systematically showing the development process of ancient Chinese civilization.

The Yellow River is a large river located in northern China, one of the longest rivers in the world, and the second longest river in China (also known as the second largest river). The total length of the Yellow River is about 5,464 kilometers, and its basin area is about 752443 square kilometers according to the People's Daily Online[1], and the Ministry of Water Resources's ** "Yellow River Network" records it as:

The total area of the basin is 10,000 square kilometers (including the area of the inflow area is 10,000 square kilometers) [2]). The basin has long winters and short summers, and the temperature difference between winter and summer is huge, and the seasonal temperature changes are distinct. [1] The Yellow River originates in the ancient Zonglie Basin at the northern foot of the Bayankala Mountains on the Qinghai-Tibet Plateau, flows from west to east through nine provinces (autonomous regions) of Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong, and finally flows into the Bohai Sea.

The precipitation in the basin is small, mainly dryland agriculture, dry in winter and dry in spring, and the precipitation is concentrated in summer, autumn, July and August. 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, and the Chinese call it the "Mother River". Every year, 1.6 billion tons of sediment are carried, 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.

3] The Yellow River Basin is the earliest developed area in China. When most of the world was still in a state of ignorance, our industrious and brave ancestors cut thorns, cleared grass, and worked in this vast land, creating a splendid and dazzling ancient culture. [4]

You are a ghost in a ghost, and the Yellow River is a magnificent ghost.