Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

      Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.

 Photo shows the highest populus euphratica forest growing at an altitude of near 2,700 meters in the west of Golmud in northwest China's Qinghai Province.