Jiuzhaigou

Jiuzhaigou is a famous nature reserve and national park in China.

It is located in the north of Sichuan Province in southwestern China. This protected area sits within the Min Mountains on the edge of the Tibetan Plateau. The valley is shaped like a large letter Y. It consists of three main branches called gullies. The Rize and Zechawa valleys flow from the south. They meet at a center point to form the Shuzheng valley. This valley flows north toward the mouth of the system.

The water here eventually joins the Jialing River. This river is part of the much larger Yangtze River system.

The landscape is shaped by complex geological processes. It features high-altitude karst, which is a type of landscape formed by dissolving rocks. The area sits on major faults between the Qinghai-Tibet Plate and the Yangtze Plate. Tectonic activity and earthquakes have helped shape the terrain over time. Most of the rock is made of carbonate rocks like dolomite and tufa. Tufa is a type of limestone. It forms when calcium carbonate precipitates quickly in freshwater. This material settles on rocks, lake beds, and even fallen trees. Over time, it builds up into terraces, shoals, and natural dam barriers.

Jiuzhaigou is most famous for its many colorful lakes. Local Tibetan people call these lakes Haizi. In Chinese, this means "son of the sea."

These lakes were originally formed by glacial activity. Natural events like rockfalls then created dams to hold the water. Carbonate deposition helped solidify these formations. Many lakes have a high concentration of calcium carbonate. This makes the water very clear. You can often see the bottom even at great depths. The colors of the lakes change based on their depth and surroundings. They appear in shades of blue, green, and turquoise.

The ecosystem is a mix of temperate broad-leaf forests and woodlands. Most of the core scenic area is covered by virgin mixed forests. In the autumn, these forests turn vibrant shades of yellow, orange, and red. The region is a vital habitat for many endangered species. It is home to the giant panda and the golden snub-nosed monkey. Both populations are currently very small and isolated. There are also fewer than 20 pandas in the area. The park is also one of only three known locations for the Duke of Bedford's vole. This species is considered vulnerable. Additionally, the area supports approximately 140 different bird species.

The history of the valley is tied to the Tibetan and Qiang peoples. The name Jiuzhaigou means "Nine Settlement Valley." This name comes from the nine Tibetan settlements located along its length. For centuries, this remote region was inhabited by these groups. Until 1975, the area was very difficult to reach and little known. In 1975, a forestry scientist named Wu Zhonglun conducted a survey. He was deeply moved by the natural beauty. He urged the government to protect the landscape and stop logging. This led to the establishment of the Jiuzhaigou Nature Reserve in 1980. The site was later named a UNESCO World Heritage Site in 1992.

Tourism has grown significantly since the park officially opened in 1984.

In 1984, only 5,000 people visited the site. By 2024, the site welcomed 5.11 million tourists. During the peak season in late July and August, over 30,000 people visit daily. To manage this, the park enforces a limit of 41,000 daily visitors using timed tickets. The town of Zhangzha and nearby Songpan County have many hotels. Some are even luxury five-star hotels. Travel has become easier due to the Sichuan–Qinghai railway and the Jiuzhai Huanglong Airport. However, mass tourism has caused concerns about the environment.

Natural disasters have also impacted the park. In August 2017, a magnitude 7.0 earthquake struck Jiuzhaigou County. This caused significant structural damage to the area. The earthquake broke two natural dams at Nuorilang Waterfall and Huohua Lake. The Nuorilang Waterfall dam was already unstable due to poor material and a vertical structure. When the Huohua Lake dam broke, water discharge jumped from 9.3 m3/s to 21.5 m3/s. This caused the water level to drop rapidly. The park was closed until March 2018. It has since reopened with limited access to ensure safety and conservation.

Visitors can explore the different valleys using specific paths. Most people use shuttle buses to reach the ends of the gullies. They then walk back downhill using wooden boardwalks.

The Rize Valley contains many famous sites. These include the 310-meter-wide Pearl Shoal Waterfall. There is also Swan Lake, which is 2,250 meters long. Another site is Five Flower Lake, which has a bottom criss-crossed by fallen trees. Other areas include Panda Lake and Arrow Bamboo Lake. These sites allow people to see the unique hydrology and geology of the region closely.