Wucai Pond is like a huge sapphire hidden in the dense forest. It is the smallest and most gorgeous pond in Jiuzhaigou. One kilometer down from Changhai is Wucai Pond. This section of the mountain road is 3,000 meters above sea level, and the colorful pond is hidden deep in the deep valley below the road. Wucai Pond is famous all over the world for its beauty, color, purity and transparency, covering an area of ??5,645 square meters. At an altitude of 2995 meters, the ground freezes three feet in the cold winter, but the water in the pool is still clear and rippling. Rain and drought alternate in the four seasons, but the water in the pool seems to have no increase or decrease.
It turns out that the water in this pool is recharged underground by the Changhai Sea located at a high place. The underground temperature is not freezing all year round, so the water supply is generally stable throughout the year. It is 6.6 meters deep. The bottom of the pool has angular gravels and distinct textures on the rock surface. The water in the pool is blue and sapphire green, clear and translucent.
The Wucai Pond is the essence of Jiuzhaigou Lakes. There are aquatic plant communities such as Spirogyra, charophylla, and ferns growing in the pond, as well as herbaceous plants such as reeds, knotweeds, and water wicks. These aquatic communities contain different shades of chlorophyll, and can show different colors in lake water rich in calcium carbonate.
In the same lake, some waters are blue, some bay branches are light green, some water colors are crimson yellow, and some springs are pink and blue...the changes are endless and it is really beautiful! When the sun is at its peak, the mountain wind blows, or a stone hits the water, it can splash out circles of golden red, golden and snow-green ripples, which is particularly charming. Although the Wucai Pond is the smallest and most exquisite among the seas in Jiuzhaigou, its colors are the most colorful, comparable to the Wucai Pond in Jiuzhaigou. The colorful pool is exceptionally clear. Through the pool water, you can see the stone patterns on the rock surface at the bottom of the pool. Due to the color difference of the sediment at the bottom of the pool and the different colors of the plants beside the pool, the originally blue lake surface becomes colorful.
The color of the lake water is caused by the fact that the water is rich in calcium ions and the water flow is slow. Therefore, after years of sedimentation, sediments of different shapes gradually form in the water. Lake water scatters, reflects and absorbs sunlight. Sunlight or natural light is a complex color light composed of monochromatic light of different wavelengths. In the spectrum, from red light to purple light, the wavelength gradually decreases. The lake water in Jiuzhaigou Valley is bright blue-green, which means that the scattering of short wavelengths in the lake water is much greater than the long wavelengths. This is the Rayleigh scattering (RAYLEIGHSCATTERING) effect.
The reason why the Rayleigh scattering effect is particularly prominent in the lake water of Jiuzhaigou Valley is mainly due to the high vegetation density in the ditch, smooth water circulation conditions, and the fixation effect of travertine on suspended matter, which makes the water There are very few suspended matter, organic matter, and plankton, and the lake water is extremely clean and transparent.
According to legend, the Wucai Pond was the place where the goddess Erotica washed herself. The male god Dago fetched water for her from Changhai every day. Over time, Dago’s feet stepped on 198 steps on the cliff. The rouge washed off Semo's face also turned into this stunning pool of five colors. People who love each other believe that if they can go down the steps to the colorful pool, make a wish silently, and then climb the 198 steps, they will be able to love each other for life.