How much area does Jiuzhaigou cover? Why is the water in Jiuzhaigou blue?

Jiuzhaigou is one of my country's 5A-level natural scenic spots. The most famous scenery here is the waterscape. There is a saying that "after visiting Jiuzhaigou, you will never see water again". There are 108 springs, waterfalls, rivers, beaches, etc. Among them, Cuihai is one of the six wonders of Jiuzhaigou, which has the power to calm people's hearts. When you are visiting, you must want to know why the water in Jiuzhaigou is blue? Let's reveal it below!

Contents of this article

1. What is the approximate area of ​​Jiuzhaigou?

2. Why is the water in Jiuzhaigou blue?

3. Is Jiuzhaigou a world cultural heritage?

How much area does Jiuzhaigou cover?

1. Jiuzhaigou, China's first nature reserve whose main purpose is to protect natural scenery, covers an area of ​​64,297 hectares.

2. Jiuzhaigou County, which belongs to Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province, covers an area of ​​5,286 square kilometers.

Jiuzhaigou National Nature Reserve is located in Zhangza Town, Jiuzhaigou County, Aba Tibetan and Qiang Autonomous Prefecture, in the southern section of the Minshan Mountains in northwestern Sichuan Province. It is located on the northeast side of Gongganling in the southern section of the Minshan Mountains.

Jiuzhaigou gets its name from the nine Tibetan villages in the scenic area (Shuzheng Village, Zechawa Village, Heijiao Village, Heyezhai, Panya Village, Yala Village, Jianpan Village, Rexi Village and Guodu Village).

Jiuzhaigou National Nature Reserve is the core area and corridor of the Minshan Mountain Range giant panda population A. It has a typical natural ecosystem and is one of the core areas of national biodiversity conservation.

Why is the water in Jiuzhaigou blue?

The reason why the water in Jiuzhaigou is blue is mainly due to the Rayleigh scattering effect. The blue-green color of the lake water in Jiuzhaigou indicates that the scattering of medium and short wavelengths is greater than that of long wavelengths. The reason why this is particularly prominent in the lake water in Jiuzhaigou is because the plant density in Jiuzhaigou is high and the water circulation conditions are smooth, so the lake water is extremely clean and transparent.

Anyone who has been to Jiuzhaigou knows that the water there is different from that in many other places. It is a bright blue-green color. The reason for this phenomenon is mainly due to the scattering, reflection and absorption of sunlight by the lake water.

We all know that sunlight or natural light is a complex light composed of monochromatic lights of different wavelengths. In the spectrum, the wavelength gradually decreases from red light to purple light. The water in Jiuzhaigou is blue-green, which means that the scattering of medium and short wavelengths in the lake water is far greater than the scattering of long wavelengths. This phenomenon is also called the Rayleigh scattering effect.

The reason why Rayleigh scattering is particularly prominent in the water of Jiuzhaigou Lake is that the plant density in Jiuzhaigou is high and the water circulation conditions are relatively smooth. In addition, the travertine has a fixing effect on suspended matter, which makes the water extremely clean and transparent.

And precisely because of the high transparency of the lake water, the gray-white travertine and yellow-green algae at the bottom of the lake selectively absorb and reflect transmitted light, increasing the layers and changes in the color of the lake water. Therefore, the color of the lake water is varied and gorgeous.

Is Jiuzhaigou a world cultural heritage?

Jiuzhaigou is a top scenic spot with three world crowns, listed as World Natural Heritage, Green Globe, and Man and Nature Biosphere. It is located in Jiuzhaigou County, Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province, in the transition zone between the Qinghai-Tibet Plateau and the Sichuan Basin, 400 kilometers away from Chengdu. Jiuzhaigou is named after the nine Tibetan villages such as Shuzheng Village, Heye Village, and Zecha Village, which are located in the high mountain lakes. Jiuzhaigou National Nature Reserve mainly protects pandas, golden monkeys and other rare animals. There are paleontological fossils and ancient glacial landforms.