Why is Bangong Lake on the Sino-Indian border semi-fresh and brackish?

First of all, it has a lot to do with the structure of Bangong Lake, which is long and narrow from east to west and narrow from north to south, resulting in the unsmooth alternation of things in the lake; Secondly, the two tributaries of Bangong Lake are located in the east, which are rich in fresh water supply, while there is almost no fresh water supply in the west, and the evaporation is large, and the salt content of the lake is rising, resulting in the unique phenomenon of semi-fresh water and brackish water in Bangong Lake.

First of all, the structure of this lake is very special. Bangong Lake is a famous international lake in western Tibet, China. It belongs to China in the east and Indian in the west. Its lake area is 604 square kilometers, China is 4 13 square kilometers, and Indian 1 9 1 square kilometers. Bangong Lake extends from east to west in a river shape. What does Bangong Lake mean in Tibetan? A swan with a long neck? . Its length from east to west reaches 150 km, while the average width of the north-south distance is only 4 km, and the north-south width in the middle of the lake is only 100 m to150 m. Therefore, the water flow in the east-west direction of Bangong Lake is extremely poor. Due to the huge evaporation, its salt content gradually rises from the middle of the lake to the west, and the salt content in the westernmost part of the lake is the highest, reaching 20 grams per liter, completely becoming a salty lake.

Second, the eastern tributary flows in. In the same climate and geographical environment, there are many tributaries flowing into the east of the lake, among which the Maga Zangbo River and the Domaqu River are the two largest tributaries of the lake, which have replenished the lake with sufficient fresh water resources, so the evaporation is less than the replenishment and become a fresh water lake.

Therefore, the eastern part of Bangong Lake is also a lake rich in animal resources, rich in aquatic plants and a wide variety of fish and birds. Among them, birds are mostly spotted geese, brown-headed gulls, fish gulls, crested ducks and red-spotted ducks, and fish are mostly Tibetan bow fish, plateau naked fish and schizothorax fish, the most famous of which is schizothorax fish because it has no scales. In addition, due to the unique glacier landform and plateau landscape of Bangong Lake, with the help of the local government, the tourism infrastructure of Bangong Lake has been continuously improved, and a large number of tourists come to visit it every year.