The culprit made the

The shot from above reveals a unique algae that turns China's salt lake into a 7-color rainbow.

The salt lake Lake Tri in Yuncheng, Shanxi Province, is often called the "Dead Sea" of China because the lake has many colorful colors such as dark pink, green, yellow, reddish brown due to algae blooms and fast-growing insects, National Geographic reported on September 25.

A rare phenomenon caused by an algae called Dunaliella salina . According to the US Aeronautics Agency (NASA), the algae are green in the marine environment but can turn red if exposed to high salinity and strong light due to "the production of carotene groups." protection in cells ". Carotene is a plant pigment responsible for the vibrant colors of salt water lakes.

Salt water solution Tri Tri changes color.

The study of algae especially on the University of Concepción, Chile, showed that D. salina is the best saline eukaryote today (eukaryotes are any organism that possesses material Genetics are in a nucleus with a covering membrane). D. salina can be found in saltwater lakes around the world like Chile, Australia, Mexico, and Israel.

Some strains of algae can accumulate more than 10% of dry weight in β-carotene if stimulated by environmental pressures such as glare, high salinity, nutrient deficiency or extreme temperatures. The pigment-rich trait of D. salina makes it a popular food color and cosmetic production material. It is also used in multivitamins.

Giai Tri Lake formed about 500 million years ago at the beginning of the New Age and became a local salt collector for 4,000 years. This is an inland lake containing the third largest sodium sulfate in the world, covering an area of ​​120 km ² .

The famous Dead Sea analogy in Israel, the salt lake in Yuncheng is rich in minerals that are beneficial to the skin. But the Dead Sea black mud mainly contains chloride, while Giai Tri Lake contains a lot of sulfate, which can support diverse flora and fauna populations.

However, the phenomenon of algal blooms , sometimes due to excess nutrients in water, can create dead zones or anaerobic areas. As algae continue to grow, reaching millions of cells per milliliter of water, other life forms will suffocate and then decompose by bacteria in the water. Determination of rotting creatures depletes available oxygen in the water. Many fish and insects underwater will not be able to survive in such conditions.