Scientific expedition team members conduct research on a lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Sept. 4, 2017. Scientists and researchers participating in China's second scientific expedition of the Qinghai-Tibet Plateau have entered Ngari Prefecture in Tibet Autonomous Region. The team will inspect more than ten major lakes and rivers in Ngari and Xigaze prefectures and study the local climate, lake sediment, lake floors and biodiversity of the region. [Photo/Xinhua]

Scientific expedition team members conduct research on a lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Sept. 4, 2017. Scientists and researchers participating in China's second scientific expedition of the Qinghai-Tibet Plateau have entered Ngari Prefecture in Tibet Autonomous Region. The team will inspect more than ten major lakes and rivers in Ngari and Xigaze prefectures and study the local climate, lake sediment, lake floors and biodiversity of the region. [Photo/Xinhua]

Scientific expedition team members set up a platform to collect samples by a lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Sept. 4, 2017. Scientists and researchers participating in China's second scientific expedition of the Qinghai-Tibet Plateau have entered Ngari Prefecture in Tibet Autonomous Region. The team will inspect more than ten major lakes and rivers in Ngari and Xigaze prefectures and study the local climate, lake sediment, lake floors and biodiversity of the region. [Photo/Xinhua]

Photo taken on Sept. 4, 2017 shows the camp of the scientific expedition team by a lake in Ngari Prefecture, southwest China's Tibet Autonomous Region. Scientists and researchers participating in China's second scientific expedition of the Qinghai-Tibet Plateau have entered Ngari Prefecture in Tibet Autonomous Region. The team will inspect more than ten major lakes and rivers in Ngari and Xigaze prefectures and study the local climate, lake sediment, lake floors and biodiversity of the region. [Photo/Xinhua]

Scientific expedition team members collect sediment cores from a lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Sept. 4, 2017. Scientists and researchers participating in China's second scientific expedition of the Qinghai-Tibet Plateau have entered Ngari Prefecture in Tibet Autonomous Region. The team will inspect more than ten major lakes and rivers in Ngari and Xigaze prefectures and study the local climate, lake sediment, lake floors and biodiversity of the region. [Photo/Xinhua]