Where does the Minjiang River finally flow?

The Minjiang River flows into the Yangtze River and finally into the East China Sea.

Minjiang River is the largest tributary of the Yangtze River, which originated at the southern foot of Minshan Mountain. Its main stream flows through 1062km, and joins the important tributaries such as Heishui River, Zagunao River, Dadu River and mabian river along the way, and joins the Yangtze River in Yibin.

(However, some people think that the Dadu River, where Leshan meets, is the real source of the Minjiang River system, because the total water volume from the confluence of Leshan to the source of Minjiang River is far less than that of Dadu River, and the length of this tributary is not as good as that of Dadu River.

Dujiangyan was built on the Minjiang River by famous soldiers of the Warring States. It is an important water conservancy project to moisten the Chengdu Plain, and it is still playing an irrigation role.

Perhaps because the ancients didn't know enough about Jinsha River, the source of the Yangtze River, Minjiang River was mistaken for the source of the Yangtze River for a long time in ancient times.

Minjiang River-Introduction Minjiang River, known as Wenjiang and Du Jiang in ancient times, is named after Minshan Mountain. Originated in Gonggangling and Langjialing of Minshan, it has a total length of 735 kilometers and a drainage area of 6,543,800 square kilometers. The drop of the whole river is 3560 meters, and the hydraulic resources130,000 kilowatts or more.

Minjiang River is a tributary with the largest amount of water in the upper reaches of the Yangtze River, and Dujiangyan is the upper reaches, mainly for driftwood and hydropower generation. Dujiangyan City to Leshan is the middle reaches, flowing through Chengdu Plain, and forms Dujiangyan Irrigation District together with Tuojiang River system and numerous artificial river networks. Below Leshan is the downstream, mainly shipping.

There are more than 90 tributaries in Minjiang River, with Heishui River and Zagunao River in the upper reaches. Dujiangyan irrigation area in the middle reaches includes Heishi River, Jinma River, Jiang 'an River, Zouma River, Baitiao River and Puyang River. There are Qingyi River, Dadu River, mabian river and Yuexi River downstream.

Dadu River, the largest tributary, is1150km long, which is 415km longer than Minjiang River.

The length in Sichuan is also 852 kilometers, which is longer than Minjiang River 100 kilometers.

Dadu River, formerly known as Moshui and Eshui, originated in Guoluo Mountain at the junction of Sichuan and Qinghai, entered Sichuan from the north of Rantang, flowed through Aba, Ganzi, Liangshan and Ya 'an, and finally merged into Minjiang River in Leshan, with a drainage area of about 80,000 square kilometers.

Dadu River Basin is rich in natural resources. Besides mineral resources, animal and plant resources, it is rich in water resources, which can be compared with Jinsha River and Yalong River, reaching more than 30 million kilowatts. Gongzui Power Station has been completed with an installed capacity of 700,000 kilowatts. Tongjiezi Power Station is 600,000 kilowatts.

Minjiang River-The history of Shu recorded the Minjiang River in BC, a piece of Wang Yang, western sichuan bazi, water to Zeguo, vast and wild; When the water recedes, it is a swamp country, where frogs croak, weeds are overgrown, water plants and reeds are overgrown, birds fly, fish and insects sneak, ducks croak and dance in groups, and people from the ancient Shu country pretend that their tribal totem is "yufu".

"Shangshu Gong Yu": "Minshan leads the river, and East Africa is a tuo"; In the tall grass, the ancient Shu people raised livestock on the mountain, just as the "Huayang National Records" contained: "River, diving, cotton, Luo are pool ze, Wenshan is animal husbandry.

"In the Spring and Autumn Period, Du, the king of Shu, built Yunyang (Pixian area) as the capital, which was higher than Chengdu, Jintang and Xinjin in the ridge line of Chengdu fan-shaped alluvial plain, because the Minjiang River could not only divert floods and reduce disasters, but also the Min and Tuo basins could communicate and exchange materials, which had the necessary conditions for building the capital.

The Minjiang River is divided into several radial rivers with guanxian as the apex to distribute flood discharge water.

However, due to sediment erosion and siltation, these natural rivers are unstable and floods will still occur, so the Prime Minister enlightened and decided to take Leiyushan (now Jintang Gorge) to eliminate floods (Huayang National Governance). Li Daoyuan's Notes on Water Classics also said: "The river is different from the East and was also carved by Ming Dow people.

"Diverting the flood from the Yangtze River to the Tuojiang River has greatly reduced the flood in the Chengdu Plain below Jiyi.

According to Shu Bian, Wang Yan, the former owner of Shu, traveled to Huanhuaxi, where the dragon boats were colorful and ten miles long.

"Chronicle of China" contains: In Song Dynasty, dozens of floats swam around Wan Li Bridge in the south gate, which was called "Little Tour of the River"; There are many cruise ships in Huanhuaxi area, which is called "River Tour".

In Emperor Xuanzong of the Tang Dynasty (847-860 AD), Liu Kan said in "Reopening the Jinshui River": "The ripples of the Jinhe River pass through the cave, and Shu people are scrambling to gather.

..... It is encouraging that those who draw water from pots, those who bathe in the mud, those who drink water because of thirst, those who fight wars, those who irrigate gardens, those officials who appreciate brocade, and those who spend flowers.

Jinhe River and Yu He River were buried at 1974, and were transformed into civil air defense projects.

Geomorphological characteristics of Minjiang River Since the Late Cenozoic, the Minjiang Basin in Minshan structural belt has been developed. The Cenozoic sedimentary records of the basin and the typical characteristics of the basin landform profoundly reflect the neotectonic activities in the eastern margin of the Qinghai-Tibet Plateau.

Based on the spatial analysis technology of digital elevation model (DEM) data and the latest high-precision SRTM-DEM data, the typical geomorphological parameters such as basin area, river length and tributary ratio of the upper and middle reaches of Minjiang River system and 67 sub-basins were systematically extracted.

Based on the statistical analysis of watershed geomorphological parameters and vertical elevation profiles of rivers, it is considered that the east and west sides of Minjiang River system have completely different geomorphological characteristics, and the eastern watershed is mainly characterized by small area, long river, low branch ratio and large river gradient.

Because the lithology of the strata on the east and west sides of the Minjiang River system is symmetrically developed, the response characteristics of the whole Minjiang River basin to climate factors are the same, so the typical parameter characteristics of the sub-basin basin indicate the difference of late Cenozoic tectonic activities between the east and west sides of the Minjiang River system, reflecting and confirming the uneven uplift of the east and west sides of the Minjiang River fault since the late Cenozoic.

Since the Late Cenozoic, the rapid uplift of the Minshan structural belt and the differential activities in the Longmenshan structural belt are the main reasons for the low development of the east tributaries of the Minjiang River system, resulting in the differential geomorphological characteristics of the east and west sub-basins.

Minjiang River-Ecological Crisis Minjiang River Crisis I: The cracked valley "nibbled" the meadow. In the low-lying area of Gonggangling Mountain, where the snow has melted, there is a large plateau belt that runs directly to the snow-capped mountains for several miles, and there is almost no vegetation.

These are all signs that the Minjiang River cracked valley is forming. Although it is not serious, if the protection is not strengthened, with the soil erosion, it is easy to form a large cracked valley, which will continuously erode the alpine meadow and form a vicious circle.