Qinghai Hoh Xil

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Qinghai Hoh Xil: The Largest and Highest Plateau in the World

The Qinghai Hoh Xil, located in the northeastern extremity of the Qinghai-Tibetan Plateau, stands as a testament to the wonders of nature and biodiversity. Inscribed as a UNESCO World Heritage Site in 2017, this expansive region of alpine mountains and steppe systems is situated more than 4,500 meters above sea level, making it the highest plateau globally.

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UNESCO Description of the World Heritage Site

Qinghai Hoh Xil, located in the northeastern extremity of the Qinghai-Tibetan Plateau, is the largest and highest plateau in the world. This extensive area of alpine mountains and steppe systems is situated more than 4,500 m above sea level, where sub-zero average temperatures prevail all year-round. The site’s geographical and climatic conditions have nurtured a unique biodiversity. More than one third of the plant species, and all the herbivorous mammals are endemic to the plateau. The property secures the complete migratory route of the Tibetan antelope, one of the endangered large mammals that are endemic to the plateau.

UNESCO Justification of the World Heritage Site

Criterion (vii): Qinghai Hoh Xil is situated on the Qinghai-Tibetan Plateau, the world's largest, highest, and youngest plateau. The property is a place of extraordinary beauty at a scale that dwarfs the human dimension, and which embraces all the senses. The contrast of scale is a recurring theme in Hoh Xil as high plateau systems function unimpeded on a grand scale, wildlife is vividly juxtaposed against vast treeless backdrops and tiny cushion plants contrast against towering snow covered mountains. In the summer, the tiny cushion plants form a sea of vegetation, which when blooming creates waves of different colours. Around the hot springs at the foot of towering snow covered mountains, the smells of dust, ash and sulphur combine with the sharp cold wind from the glacier. Glacial melt waters create numerous braided rivers which are woven into huge wetland systems forming tens of thousands of lakes of all colours and shapes. The lake basins comprise flat, open terrain incorporating the best preserved planation surface on the Qinghai­Tibet Plateau as well as an unparalleled concentration of lakes. The lakes display a full spectrum of succession stages, forming an important catchment at the source of the Yangtze River and a spectacular landscape. The lake basins also provide the major calving grounds of the Tibetan antelope. In early summer each year, tens of thousands of female Tibetan antelopes migrate for hundreds of kilometres from wintering areas in Changtang in the west, the Altun Mountains in the north and Sanjiangyuan in the east to Hoh Xil’s lake basins to calve. The property secures the complete antelope migratory route between Sanjiangyuan and Hoh Xil, supporting the unimpeded migration of Tibetan antelope, one of the endangered large mammal species endemic to the Plateau.

Criterion (x): High levels of endemism within the flora of the property are associated with high altitudes and cold climate and contribute to similarly high levels of endemism within the fauna. Alpine grasslands make up 45% of the total vegetation in the property dominated by the grass Stipa purpurea. Other vegetation types include alpine meadows and alpine talus. Over one third of the higher plants found in the property are endemic to the Plateau and all of the herbivorous mammals that feed on these plants are also Plateau endemics. There are 74 species of vertebrates in Hoh Xil, including 19 mammals, 48 birds, six fish, and one reptile (Phrynocephalus vliangalii). The property is home to Tibetan antelope, wild yak, Tibetan wild ass, Tibetan gazelle, wolf and brown bear, all of which are frequently seen. Large numbers of wild ungulates depend on the property including almost 40% of the world's Tibetan antelope and up to 50% of the world's wild yak. Hoh Xil conserves the habitats and natural processes of a complete life cycle of the Tibetan antelope, including the phenomenon of congregating females giving birth after a long migration. The calving grounds in Hoh Xil support up to 30,000 animals each year and include almost 80% of the identified birth congregation areas in the entire antelope range. During the winter, some 40,000 Tibetan antelopes remain in the property, accounting for 20-40% of the global population.

Encyclopedia Record: Hoh Xil

Hoh Xil or Kekexili, is an isolated region in the northeastern part of Qinghai-Tibet Plateau. On July 7, 2017, the Hoh Xil in Qinghai was listed among the UNESCO World Heritage Sites as "the largest and highest plateau in the world".

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IUCN World Heritage Outlook

The 2025 Conservation Outlook on Qinghai Hoh Xil reports the following assessment:

Source: International Union for Conservation of Nature (IUCN) · View assessment