Request: Depart from Chongqing on Friday night or Saturday morning, go to Wushan Small Three Gorges, Baidi City, Fengdu, and return to Chongqing. A plan to come back on Sunday.

Yangtze River

The Yangtze River is the longest in China, with a length of 6397 kilometers (the source of the Tuotuo River), and is often called the main stream of 6300 kilometers. ? With an area of ??more than 1.8 million square kilometers, the total drainage area reaches an average of about 1.96 trillion cubic meters to the sea every year. The Yangtze River ranks third in the world in terms of length between its main stream and its entry into the sea.

The Yangtze River originates from the Tuotuo River and the Geladandong Snow Mountain in the Tanggula Mountains on the southwest border of Qinghai Province. After a long period of time in the south of the Yangtze River, it returns to the Tongtian River and flows south to the mouth of the Batang River in Yushu County to Sichuan Province. Between the Jinsha River and Yibin City, before the Yangtze River below Yibin, Yangzhou was formerly known as the Yangtze River. The Yangtze River flows through Tibet, Sichuan, Chongqing, Yunnan, Hubei, Hunan, Jiangxi, Anhui, Jiangsu and other provinces and cities, and enters the East China Sea in Shanghai. Tributaries such as Yalong River, Minjiang River, Tuojiang River, Jialing River, Wujiang River, Xiangjiang River, Hanjiang River, Ganjiang River, Qingyijiang River and Huangpu River. Intersects the Beijing-Hangzhou Grand Canal in Zhenjiang City, Jiangsu Province.

In Yichang City, Hubei Province, the upper reaches of the Yangtze River have many rapids and shoals; the middle reaches from Yichang to Hukou in Jiangxi are winding and full of lakes (Poyang Lake and Dongting Lake are the two largest lakes); and the lower reaches of Hukou , the river is wide, and the alluvial Chongming Island at the river mouth is. The Yangtze River is rich in water and hydropower resources. During the water container period, 10,000-ton ships can pass through Wuhan, and ferries can be traced back to Yichang.

The Yangtze River Basin is an economically prosperous and densely populated area in China, with important cities along the river such as Chongqing, Wuhan, Nanjing, and Shanghai.

Hydropower development in the Yangtze River provides a total of 200 million kilowatts, the richest hydropower river in China. The above 2,800 kilometers are said to be the navigable mileage of the Yangtze River, known as the "golden waterway".

The Yangtze River is the majestic and steep Three Gorges section (Qutang Gorge, Wu Gorge and Xiling Gorge) from Fengjie, Chongqing to Yichang, Hubei Province. It is the largest water conservancy project in the world. The Three Gorges Project is located in the middle of Xiling Gorge. Ping.

The Yangtze River is the longest in China and one of the largest rivers in the world. It is the main stream on the southwest side of the Geladandong Snow Mountain, the main peak of the Tanggula Mountains in the Qinghai-Tibet Plateau, with a total length of more than 6,300 kilometers. It originates from (33rd North Latitude °28', longitude 91°08'). It is the main stream that passes through 10 provinces, municipalities and autonomous regions of Blue, Tibet, Sichuan, Yunnan, Hubei, Hunan, Jiangxi, Anhui, Jiangsu and Shanghai, and enters the East China Sea. The total length of the Yangtze River is about 6,300 kilometers (the total length of the Yangtze River is 6,403 kilometers), ranking 3rd in the world and first in the country. The basin is between 24°30' and 35°45' north latitude, and 90°33' and 112°25' east longitude. It covers an area of ??more than 1.8 million square kilometers (excluding the Huaihe River Basin), accounting for about 1/5 of the total land area. The average annual discharge into the sea reaches 1 trillion cubic meters, ranking first in the country and third in the world. Ancient rivers, six theories, the Yangtze River Delta and the Yangtze River Basin.

The names of the mainstream Yangtze River in each branch of the main stream are different in the archives: the source, Crooked Mouth (Zanghe "Ge"), says that the Tuotuo River is the main source of the Yangtze River, 358 kilometers long; Dangge The mouth of the Batang River in Yushu County, Qinghai Province, is called Tongtian River, and the 813-kilometer-long Batang River mouth to Yibin. The Minjiang River mouth in Sichuan Province is called the Jinsha River, which is 2,308 kilometers long. The Yangtze River from the Minjiang River mouth in Yibin to the mouth of the river is about 2,800 kilometers, commonly known as The Yangtze River from Yibin to Yichang, Hubei Province, "Chuanjiang River (from Fengjie to Yichang Three Gorges to Xiajiang River), Hubei Province radiates to Chenglingji, Hunan Province, Jingjiang City, Jiangsu Province, Yangzhou, Zhenjiang, Yangtze River Basin Plateau, mountainous area accounts for 65.6% , hills account for 24%, plains and lowlands (10.4%)? More than 10,000 square kilometers of the Yangtze River tributary basin area; revised over 50,000 square kilometers of the Yalong River, Minjiang River, and Dadu River. The Jialing River, Wujiang River, Yuanjiang River, Xiangjiang River, Hanjiang River, Ganjiang River and their tributaries Yalongjiang, Minjiang, Jialingjiang and Hanjiang exceed 100,000 square kilometers, and the largest Jialing River basin covers an area of ??about 160,000 square kilometers.

Big. Some of the freshwater lakes in China are located in the middle and lower reaches of the Yangtze River. The larger ones are Poyang Lake, Dongting Lake, Taihu Lake and Chaohu Lake.

The Yangtze River originates from the Tanggula Mountains in the Qinghai-Tibet Plateau. On the southwest side of Geladandong, the main peak of the Tanggula Mountains, the glaciers here are the source of extensive ice and snow melt water. From the source of the Yangtze River in Haikou, it can be divided into three parts: the upper reaches of Yibin in Sichuan and the lower reaches of Yichang in Hubei. The upstream section is about 3,500 kilometers long. The Chumar River is the source to the north of the Yangtze River; the source of the Yangtze River in the south of the Su River is a long process. Add an appropriate amount of water. According to the principle of "river source CD-go", the longest tributary The Tuotuo River is the source of the Yangtze River. From the mouth of the Qu River to the Tongtian River in Yushu in Qinghai Province, the 813-kilometer-long river is wide and moisturizing. From Yushu to Yibin, it is called the Jinsha River. Its ancient name is Lishui, from north to south. It flows through the Hengduan Mountains near Shigu in Yunnan, and ends in the northeastern part of the Sichuan Basin where it joins the Minjiang River in Yibin. The total length is 2,300 kilometers. The middle reaches of the Yangtze River from Yibin below are about 10,000 kilometers long. Because it flows through the Sichuan Basin, it is commonly known as the Yangtze River. The Chuanjiang River is a rather winding river from Yibin to Chongqing, starting from Baidi Mountain in Fengjie County, Yichang and Nanjinguan, at the junction of Sichuan and Hubei, passing through the mountains and rivers of the Grand Canyon, from the west to the Qutang Gorge, Wu Gorge and Xiling Gorge in the east. Collectively known as the Three Gorges of the Yangtze River, with a total length of 204 kilometers, the beach is faster than the current, and the river water drops are great. Since ancient times, it has been called the natural barrier of the Yangtze River.

The gap in the downstream section of about 1,850 kilometers is very small. The slow-flowing river is very wide, generally more than two kilometers, and the narrowest point is 650 meters. The rivers are winding, especially from Zhijiang in Hubei to Chenglingji in Hunan. For some people, Jingjiang City, the ancient name is called "Nine-bend Ileum". Slow flow, sedimentation, whenever the flood season, can easily lead to The flood disaster of the Yangtze River in Jingjiang has been said since ancient times. Many lakes on both sides of the river from Yichang to Wuhu, Dongting Lake and Poyang Lake, are the natural reservoirs of the Yangtze River in Jiangsu. Passing the Ningzhen Mountains to the northeast, Zhenjiang City follows the preferential beam to the south and enters the delta area. The terrain is flat, dotted with lakes, and waterways intertwined like a network. The water drive site is actually 80 kilometers long, and the rivers and seas are connected. Spectacular scenery. The Yangtze River has beautiful scenery and many tourist attractions. It has a long course, a wide basin, fertile land, and irrigation facilities. The middle reaches of the Yangtze River are the "Land of Abundance" and the lower reaches of China are rich in resources in the Yellow River Basin. The cradle of the nation, according to historical records, King Wu of Zhou moved south to the Yangtze River Basin area. After passing through the Yellow River, the Yangtze River Basin has become the focus of China's historical and cultural development. There are many cities along the river, such as Chongqing, Yichang, and Wuchang. Nanjing, Shanghai, etc. Shanghai is the largest industrial and commercial city in China. There are many places of interest in Chinese history, and there are also many myths and legends that are a valuable heritage of Chinese literature. Main branches and tributaries have been vertical and north-south water transportation arteries from ancient times, with a total length of more than 800,000 kilometers. A 10,000-ton ship can reach 3,000 tons from Nanjing to Hankou, and a 10,000-ton ship can reach Chongqing, 500. t can pass through Yibin.

The middle and lower reaches of the Yangtze River Plain are the Yangtze River Plain, the southern boundary of the Huaiyang Hills and the Huanghuai Plain, and the northern boundary of the Yangtze River and Zhejiang Hills. and its tributaries are alluvial. The area is about 20 square kilometers, mainly the central plain of Hubei Jianghan Plain, Hunan Dongting Lake Plain (collectively referred to as Hubei, Hunan), and the Poyang Lake Plain; the lower reaches include the Yangtze River coast of Anhui. The climate of Chaohu Plain in Anhui and the Yangtze River Delta in Jiangsu, Zhejiang and Shanghai is a small part of the northern edge of the subtropical zone. The annual average temperature is 14-18℃, the coldest month is 0-5.5℃, and the absolute minimum temperature is -10. to -20°C, the average temperature in the hottest month is 27-28°C, and the frost-free period is 210-270 days. Agricultural maturity or triple cropping, annual precipitation is 1000-1400 mm, and the zonal soil is found only in spring and summer. The hilly hills, yellow brown soil or yellow cinnamon soil are mostly red soil on the southern edge, and the plains are mostly paddy soil. The land reclamation rate (62.1%, 45.6% in Jiangsu) is an important source of grain, cotton, and rice. Oil production base. It is rich in rice, wheat, cotton, rape, silkworm, ramie, and jute. The braided rivers are crisscrossed and the lake area is 20,000 square kilometers, which is equivalent to 10% of the plain areas of Hubei and Hunan. Large lakes and small lakes, covering an area of ??more than 10,000 to more than 12,000 square kilometers, accounting for more than 20% of the area, there are more than 1,300 lakes in the plain, which is the place for Chinese lakes. The largest freshwater lakes Poyang Lake, Dongting Lake, Taihu Lake, Chaohu Lake and the natural reservoirs of the Yangtze River regulate water and reduce flood peaks. Fish, shrimps, crabs, lotus, water chestnuts, reeds, Chinese sturgeon, crocodile skin, Bletilla striata, the world's largest freshwater lake. The treasures and aquatic products occupy an important position in China, known as the land of plenty. It is one of the most economically developed regions, including Shanghai, Nanjing, Wuhan, Nanchang, Suzhou, Wuxi, Changzhou, Nantong, Wuhu City, Changsha City and other cities. The main industries include steel, machinery, electricity, textiles, and chemicals. It is an important industrial base. In the central residential area of ????Pingyuan? The north-south and east-west transportation network, water and land transportation are very developed. The Yangtze River passes through the country and becomes the main east-west water transport artery. Together with countless tributaries, it forms a huge waterway network.

The alluvial delta of the Yangtze River Delta where the Yangtze River and Qiantang River in China flow into the sea. Including Jiangsu Province and Shanghai City, the southeastern part of northeastern Zhejiang Province. It is part of the middle and lower reaches of the Yangtze River Plain. The area is about 50,000 square kilometers. The apex of the delta is in Zhenjiang, the city line of Yangzhou, and reaches Xiaoyangkou in the north. It faces Hangzhou Bay in the south. The height is more than 10 meters, the altitude is 200 to 300 meters, and it spreads among low mountains (Huishan, Tianping Mountain, Yushan, Hui Tailang, etc.). The average annual sediment load of the Yangtze River is 4 million to 9 million tons. In the Yangtze River Basin, 28% of the sediment is deposited. In individual years, it is as high as 78%. Delta Air Lines will continue to extend to the sea in normal years. The altitude of the ancient spit in Changzhou City, Changshu City, Taicang City, and Jinshan County is more than 4 to 6 meters in the area south of the Yangtze River. To the north of the Yangtze River, Taizhou City, Yangzhou City, Taixing City, and Rugao City are 7 meters above sea level along the ancient spit. -8 meters. The ancient sand spits in the south of the Yangtze River and the north of the Yangtze River are the highest post-glacial seas. They gradually developed into a stable sea that can be traced back to 2000. At that time, the Liaojiao Zui on the north bank of the mainstream Yangtze River spit out the sand spit on the south bank and extended to the southeast to connect with the sand spit at the mouth of the Qiantang River. The sediment continued to accumulate. From 1958 to 1973, it moved forward an average of 148 meters per year. It has a north subtropical monsoon climate with abundant rainfall, crisscrossed waterways and lakes filled with water. The land is fertile, agriculture produces rice, cotton, wheat, rapeseed, peanuts, silk, fish, and shrimp, and it is one of the most densely populated areas in China.

There are many important towns on both sides of the lower reaches of the Yangtze River and the Shanghai-Nanjing Line, such as Shanghai, Nanjing, Suzhou, Changzhou, Wuxi, Zhenjiang, Yangzhou, Taizhou, and Nantong. Shanghai is the largest industrial and commercial city in China, a world-famous foreign trade port, Suzhou, Wuxi and other scenic spots and tourist places and emerging industrial cities.

Yangtze River Picture: /pic/1/11456102519546897_small.jpg

The Yellow River, also known as the Yellow River in ancient China, originated during the reign of the Chinese people and In China, the Bayan Har Mountains of Qinghai Province flow into 9 provinces including Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan, Shandong, and finally into the Bohai Sea, Dongying City, and Kenli County, Dongying City, Shandong Province. With a total length of 5,464 kilometers, the Yangtze River is the second largest river in China. The Yellow River is the fifth longest river in the world.

The upper reaches of the Yellow River from its source to Hekou Town is 3,472 kilometers long. The middle reaches are between Hekou Town, Tuoketuo County, Inner Mongolia Autonomous Region and Taohua Valley, Zhengzhou, Henan, with a river length of 1,206 kilometers; the downstream river course of Taohua Valley is 786 kilometers long. . (The boundaries of the lower reaches of the Yellow River are different, and the zoning plan of the Yellow River Conservancy Commission) runs through the eastern and western regions, with a basin length of 1900 kilometers from east to west and a width of 1100 kilometers from north to south. What is the total area of ??the Yellow River? 752,443 square kilometers.

The Yellow River’s multi-year average flow is 1,774.5 cubic meters per second. The entire river’s multi-year average natural runoff is 58 billion cubic meters. The average annual runoff in the basin is 77 mm, 593 Cubic meters of water per capita in the basin has 324 cubic meters of water per acre of cultivated land.

The Yellow River flows through the Loess Plateau in the middle reaches, putting a large amount of sediment into the tributaries of the Yellow River with sediment concentrations found in most rivers in the world. The maximum annual sand transport volume was 391 million tons (1933), and the maximum sand content was 920 kg/m3 (1977). The multi-year average sand content of Sanmenxia Station is about 16 million tons, with an average silt content of 35 kg/cubic meter.

The average flow rate of Changyuan altitude is 4800 meters and 1774.5 cubic meters/second.

The basin area is 5464 kilometers? The 752,443 km source of Qinghai Province flows into the Bohai Sea

The Yellow River flows through the People's Republic of China and is the mother river of the country of China. Maintaining the birthplace of Chinese civilization, the descendants of the blood image are the symbols of the Chinese nation's national spirit and national sentiments.

Like a victorious lion jumping with a dome on its spine, between high mountains and deep valleys, green and sweet provinces ring out from the lofty mountains of the Qinghai-Tibet Plateau; across Ningxia, the Hetao Plain in Inner Mongolia, the surging Yellow River exists in Shanxi, Shaanxi ;Broken "dragon" at the foot of Huashan Mountain, turned eastward across the plains of northern China, and rushed to the Bohai Sea. ? With an area of ??more than 750,000 square kilometers and a drainage basin area of ??5,464 kilometers, it is the second largest river in China. It flows through 9 provinces and autonomous regions, with a collection of more than 40 major tributaries and more than 1,000 brooks for Sichuan tourism. The average annual precipitation in the entire basin is about 400 mm, while the average annual runoff of the Yellow River is only 5.74 billion cubic meters, ranking the eighth largest river in China. There are 2 million acres of cultivated land in total and about 1 million people, plus the watershed areas along the lower reaches of Henan and Shandong. The Yellow River Basin is rich in water resources and massive mineral deposits. People have worked hard here for generations to create the cradle of splendid ancient culture, the country of China.

There have been various sources claiming the history of the Yellow River. As early as the first half of the 7th century AD, its Kariqu was the source of the Yellow River, but this has not yet been confirmed. It was truly in the Yuan Dynasty, the Qing Dynasty that in 1280 and 1704 Lashi explored the source of the river and reached the Xingxiu Sea. Therefore, the Xingxiu Sea as the source of the river has been circulated for many years. Since the founding of the People's Republic of China, the Yellow River Water Conservancy Commission organized a river source expedition team in August 1952 and found out that the ancient case was the source of the Yellow River. Over the past 20 years, mistakes have been made, but many people have also raised questions. It was not until the summer of 1978 that another investigation of the source of the river was organized, and on-site investigations were extended to the source area to determine whether they were Zhaqu, Yogu, and Kaliqu in the Sanhe entrance of Heyuan City in the west of the region. In the shortest tying process, a small amount of water can only be counted as the song of a tributary in the situation listed in ancient times. About the ancient case, the listed ancient case, the listed first song song and kariqu kariqu are nearly 30 kilometers long, and the drainage area is? Over 700 square kilometers, there is also more than 2 times the amount of water. Therefore, the identification of Kariqu as the Yellow River is based on a more sufficient source. Kariqu originates from the overflowing water of several springs at the foot of Mount Zhiya at an altitude of 4,800 meters at the northern foot of Bayan Har Mountain. It is the cradle of the initial flow of the Yellow River that "roared for thousands of miles and touched Longmen, the Chinese nation

BR /> "The birthplace of the Yellow River, the Chinese nation, the 5,000-year-old culture, originated from you..." These are the lyrics of the so-called song "Singing the Yellow River" whenever people sing this. In the song, the submerged Yellow River fell into endless memories.

As early as 800,000 years ago, ancestors of the Paleolithic Age lived and hunted in the Chinese country of the Yellow River Basin. More than 2,000 ruins were found in the Yellow River Basin. Primitive villages have been discovered, which shows that the ancestors of the Neolithic Age settled in this vast land and engaged in primitive agricultural production.

In the middle of the Neolithic Age, the Yellow Emperor tribe, then the Zhi family, and the Yandi tribe spread to the Loess Plateau in the middle reaches of the Yellow River. The ancient migration of the three tribes was uncertain, and they lived a nomadic life. Later, Emperor Yan and Emperor Huang attacked and killed Zhi Lianhe. Soon, the Yandi family and the Huangdi tribe gradually merged and settled in the area of ??Shaanxi, Gansu, Shanxi, and the middle and lower reaches of the Yellow River that developed together.

The Xia, Shang, and Zhou dynasties who entered the slave society 3,500 years ago are the descendants of the Yellow Emperor. They call themselves "China" or "Xia". The nation is the predecessor of the Han nationality in China. The Han people all regard the Yellow Emperor as claiming that their ancestors are descendants of the Yellow Emperor (also known as "Yanhuang"). At that time, the Chinese nation lived in the Central Plains region, and people believed that the Central Plains ranked among the four directions. It was also known as "China" later, the national Chinese culture spread to all parts of the country, and the word "China" became the name of the entire China.

For thousands of years, the Yellow River Basin was the center of feudal rule and oppression. The continuous struggle of the working people in the late Qin Dynasty, Chen Sheng, Wu Guanghan, the Red Eyebrow, Bronze Horse, Yellow Turban Uprising, the Wagang Army in the late Sui Dynasty, Huang Chao in the Tang Dynasty, Li Zicheng, Zhang Xianzhong in the late Ming Dynasty. etc., to conduct live dramas. During the Anti-Japanese War and the War of Liberation, Shaanxi, Gansu, and Ningxia were the reliable revolutionary bases of the Chinese people until the founding of the People's Republic of China in the long period. In the course of history, the great Yellow River has nurtured the sons and daughters of the Chinese nation and created a splendid ancient culture. The Yellow River sings, and we are very proud of "the name of the river". The word in the pre-Qin era, the Qin and Han dynasties, is basically the expertise of the Yellow River, the river, known as "river" or "water" (but there are exceptions, such as the book "The Classic of Mountains and Seas", which says: "Kunlun Mountain, It is thousands of miles long and thousands of miles high, and goes 50 kilometers to Haoshan, Qinghe, Baihe, Honghe, and Heihe City's central market. ") Didn't the Yellow River find pre-Qin literature? Judging from it, Han Zhengnian, Emperor Wu of the Han Dynasty, recorded it in a book. I haven’t seen Huang He’s statement in the entire chapter. According to the research of scholar Li Eyi, the word was first seen in Bangu's "Hanshu·Geography·Changshan·Yuanshi County" of the Eastern Han Dynasty, as explained in the Yellow River text. The "yellow" in the Yellow River is used to describe turbid rivers, which is also recorded in old books: During the Warring States Period, the poem "Zuo Zhuan·Xiang Gong Zheng Guo Ba Zi Si Yin Yi Zhou Shu" "said" as soon as the river water is clear, the geometry of life! "Erya·Shishui" records that "the river comes out of Kunlun, white in color, and drains thousands of horses and hundreds of rivers in Sichuan, yellow." And Haizi, the countless lakes and the dazzling star sea in the sun, like a proud peacock, are very beautiful and spectacular. The local Tibetan residents during this period, the Yellow River was called "Maqu" (RMA Pillar), "Peacock River" meaning. Maqu County, Gansu Province, is named after this river.

Source of Hydrological Characteristics The Yellow River originates from the Bayan Har Mountains in Qinghai Province, but its true source is still controversial. There is a process in the history of the source of the Yellow River.

People in the Sui and Tang Dynasties gradually understood the establishment of the source of the Yellow River correctly. In the fifth year of the reign of Emperor Yang of the Sui Dynasty (609), Tuyuhun Houheyuan County, the Goluo Tibetan Autonomous Prefecture in Qinghai Province, and the Hainan Tibetan Autonomous Prefecture are part of today's area, indicating that people call it the birthplace of the Yellow River. In 2009 (635), Tang Zhenguan put down the Tuyuhun rebel generals Li Xinhou Junji and Li Daozong. He led the detachment to Xinghai along the Tang Dynasty, including "the constellation of Sichuan Province, Dabohai, looking for the source of the river Jishi Mountain to browse. " Since the Tang and Song Dynasties, Changxinghai has been referred to as the source of the Yellow River.

In the Yuan Dynasty, people began to conduct on-site inspections of the source of the Yellow River. Kublai Khan, the founder of the Yuan Dynasty, sent Renmin and others to conduct an investigation in the 27th year of the Yuan Dynasty (1280). Heyuan and the Xinghai area of ????the Yellow River. After a detailed investigation, Xiao's "River Origin Chronicles" written in Panang's book in 1315 was the real investigation and clearly pointed out that the Yellow River, more than 100 miles southwest, originated from the Sea of ??Stars, where water gushes out of the ground like a well and is more than a hundred years old. "

In the 40th year of the reign of Emperor Kangxi of the Qing Dynasty (1704), Emperor Kangxi ordered Laxi Rilan to explore the source of the Yellow River. They arrived at Xingxiu Sea and discovered the source of the three rivers, but did not trace the source. Laxi and Shulan returned After arriving in Beijing, Shu Lan drew a map of Heyuan City and wrote, "I remember Heyuan. In the late Kangxi period, the national topographic survey was organized. Emperor Kangxi, in 1967 (1717), sent Lama Chuerqin Zangbo, Lanmu Zhanpase and Lifanyuan's main resorts to survey the river source area. This line "multiple river sources, involving Wanli, after returning to Beijing, the measurement results were drawn in Huang Yu's sketch of the exploration and extraction of the Xinghai River. In the 40th year of Qianlong's reign in the Qing Dynasty (1782), Ami arrived at the "Qianlong Emperor's Gate Guards Ceremony". "Source of the River". The source of three rivers 300 miles west of Amida Xingxiu Sea was surveyed in the Xingxiu Sea, and the source of the Yellow River was determined to be the Alstan Gol River (today's Kariqu) in the southwest of the Xingxiu Sea.

From 19 From the beginning of the 20th century to the early 20th century, Western explorers and geographers traveled deep into the Tibetan Plateau. They wanted to reach the source areas to collect natural and cultural information, such as the Indians Aka, the French Dou de Le, Ao London, the Russian Varski, China Can, Kozlov, Germany Fissler Taiwan Pei Keer.

Since the founding of the People's Republic of China, many visits to the source of the Yellow River were organized by the Yellow River Water Conservancy Commission, Hunan. The determination led the directors to explore the source of the Yellow River for several months.

The river source exploration research team found that in ancient times, the source of the Yellow River was Lada, Yahaoze Mountain, and its source was on the Eling Lake and under the Zhaling Lake. This result does not match previous research results and has caused controversy in the academic community. However, given the ancient origin of the Yellow River, the first order is widely circulated. In 1978, Qinghai Province invited central and local researchers to conduct on-site surveys of the source of the Yellow River and two lakes, Zhaling and Eling, and admitted that the song was the source of the Yellow River, Zhaling Lake, and Eling. From 1981 to 1982, scholar Yang Liankangzu inspected the entire Yellow River. He believes that the farthest origin of the Yellow River begins with the Bayan Harji Lalang Love Song, which is longer than the 30.5 kilometers listed in ancient times and 11.9 kilometers longer than the KaRiqu. In 1985, the Yellow River Water Conservancy Commission confirmed that Maqu County is the source of the Yellow River based on historical traditions and opinions from all sides, and established a symbol of the Yellow River Maqu Song Fruit Source in the southwest corner of the listed basin under the ancient circumstances.

The upper and lower reaches of the Yellow River are bounded in different ways. After inspection, it is believed that the Qingtongxia Yellow River Water Conservancy Commission Taohuayu divides the downstream town entrance. According to traditional middle school textbooks, Hekou Town is divided into Mengjin, middle and lower reaches. Scholar Yang related to health, and Mengjin division is more suitable. Scholar Xu Shaoli advocated that Henan Province , Jiaozuo City, Jiayingguan, Wuzhi County, the dividing line between the middle and lower reaches of the Yellow River. This article is based on the zoning plan of the Yellow River Conservancy Commission.

Upstream "The Yellow River Bridge in Hekou Town, Tuoketuo County, Lanzhou, reaches the Yellow River in Inner Mongolia. The total length of the upper reaches of the Yellow River is 3,472 kilometers. The drainage area is ?386,000 square kilometers in the Yellow River Basin, accounting for 51.3% of the total area. The average proportion of reaching a total drop of 3496 meters dropped to 10‰; reaching a larger tributary (basin area of ??1,000 square kilometers), 43, accounting for 54% of the entire river runoff; annual sediment load in the upper reaches Only accounting for 8% of the total amount of sand, water and sand in the entire river, the Animaqing Mountain, the source of the Yellow River in the upper reaches of the river, and the Qinghai Nanshan Mountain control the S-shaped bend of the upper reaches of the Yellow River. The characteristics of the river can be divided. It is divided into three parts, the river source section, the canyon and the alluvial plain.

The river source section starts from Longyang Gorge, Qinghai and Qinghai, and passes through Xingxiu Sea, Zhaling Lake and Eling Lake. Maduo Qingshan detours through Longyang Gorge to Qinghai Animaqing Mountain and Xizhan Mountain. The river in this section flows through three or four kilometers of plateau. The river is winding and winding, and there are mostly lakes, swamps and wetlands on both sides. , the water is clear, the water flow is stable, and the water production reaches 4260 meters above sea level in Zhaling Lake, Eling Lake, 2 lakes, the water storage capacity is 470 million cubic meters and 10.8 billion cubic meters, It is the largest plateau freshwater lake in China, extending from Maduo to Maqu in Qinghai. The flow of the Yellow River passes through the ancient basin and hills between the Bayan Har Mountains and the Animaqing Mountains, with wide valleys and occasional canyons in Gansu. Maqu Qinghai Guide is in the Longyang Gorge section. The Yellow River flows through the high mountain canyon with rapid water flow and rich hydraulic resources. It originates from the Baihe River, a tributary of Minshan Mountain, and the Heihe River flows into the Yellow River section from Longyang Gorge to Qingtong Gorge in Qinghai. In some canyon sections, rivers flow through mountains and hills, forming canyons. In the case of white ravines, canyons are formed due to different rock properties: hard gneiss, granite and metamorphic rock, Nanshan District section, loose sand shale The red rock formations form ravines in the sections of Longyang Gorge, Jishi Gorge, Liujia Gorge, and Bapan Gorge, reaching both sides of the Weibei Loess Plateau, an important agricultural area in southern Shanxi, Shanxi and other provinces. The important tributaries of the Fenhe River, Luohe River, Jinghe River, Weihe River, Yiluo River, and Qinhe River are the main source of sediment. In the lower reaches of the Yellow River, the average annual sediment load of this river is 5.5 million tons. The 132.5-kilometer river from Yumenkou to Tongguan (i.e., the main stream of the Xiaobei River) is severely eroded from one side to the other and the river is very unstable from one side to the other. Due to the history, the lower reaches of the Yellow River are frequently flooded due to breaches and floods from the southwest. The northeast flow reaches freezing point in the north for the first time in winter, which can easily lead to ice dam blockage and cause embankment violations. The threat of freezing flood is very serious. The Yellow River estuary is located at the intersection of Bohai Bay and Laizhou Bay, shaping the new river. Later, in 1976, the siltation river course of Qingshuigou was artificially diverted.

The main stream of the Yellow River Lake, Eling Lake, Wuliangsuhai Lake, Gyaring Lake, and Dongping Lake accumulated, with a total length of 1,707 kilometers. 31.2% of total length.