The restoration and expansion of rare and endangered species is visible evidence of success in biodiversity conservation, it added.
The number of Tibetan antelope on the Qiangtang Plateau in Tibet Autonomous Region increased from about 60,000 in 2000 to over 200,000 in 2016. The number of wild yak in this area increased from 6,000 before it was included for protection, to 10,000 in 2016.
The Chinese government has carried out a number of projects for overall improvement of river basins, improvement of urban and rural living conditions, and prevention and control of pollution from factories and mines, according to the white paper.
Zhang Yongze, vice chairman of Tibet Autonomous Region, said at a press briefing that more than 94 percent of the region's rivers are prohibited from exploitation and development.
"Tibet remains one of the areas in the world with best environmental quality," Zhang said, noting that most areas of the region are in a primordial state.
Tian Jinchen, vice governor of Qinghai, told the same briefing that the province had witnessed an increase in its green coverage, water resources, area of wetland ecosystem, biodiversity and herdsmen's income over the years, while its desert has been dwindling.
The area of Qinghai Lake, China's largest saltwater lake, has expanded more than 170 square kilometers since 2005, reaching a record size in 40 years. Nearly 1,000 highland lakes and wetlands, which disappeared in the late 1990s re-emerged in the Sanjiangyuan area, according to Tian.
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