The unique topography of the Yarlung Tsangpo Grand Canyon covers different elevations, providing a suitable environment for different plants and animals. With a sub-tropical climate at an altitude of 1000 meters, the trees growing on the mountains of the canyon constitute a complex tropical primeval forest. Areas with altitude 1000-2400m belong to the mountain subtropical climate with rich rainfall. There's a small amount of coniferous forest, many of which are valuable and rare in Tibet and China. Areas with an altitude of 2400-3000 meters belong to the mountain temperate climate. The coniferous and broadleaf trees in the forest show different colors in different seasons. In spring and summer, it shows emerald green and jade green; while in autumn and winter, it shows red, yellow, green, so it's also being called five color forests. In 2005, "China National Geography" experts voted the Yarlung Tsangpo Grand Canyon as one of the top ten most beautiful canyons in China.