The 496.3-meter-long Yarlung Zangbo Grand Canyon has an average depth of 5,000 meters, but drops in places to 5,382 meters. Since these figures came to light, world geography textbooks have had to be rewritten; Yarlung Zangbo Grand Canyon is the world's deepest, longest, highest and most dangerous one. In the past, the 5,133-meter-deep Grand Canyon of the Colorado was considered to be the deepest.
The Yarlung Zangbo Grand Canyon stretching in the lower reaches of the Yarlung Zangbo River occupies an area of 64,300 square kilometers. The Yarlung Zangbo River - the world highest river makes a turn round the highest peak of the east Tibet, thus forming the largest canyon of the world.
The Yarlung Zangbo Grand Canyon is the only water channel from the Qinghai-Tibet Plateau to the Indian Ocean. The Canyon, with its unique right-angle turn, provides many fantastic natural views.
The Yarlung Zangbo Grand Canyon is the highest green land on earth. Green mountains have snow-covered peaks poking through the clouds. Visitors come to see the area's mountain belts, unusual plants and animals, and mysterious cultures. The Yarlung area is home to many living species. Preliminary statistics show that there are over 3,768 varieties of plants, 680 varieties of large fungi, 232 species of birds 31 species of amphibians, 2,000 kinds of insects and over 230 rust fungi.
The Yarlung Zangbo Grand Canyon stretches 496-kilometers long and averages over 5,000 meters deep. It measures 21-kilometer wide and even at the narrowest part it has a depth of 5,138-meters. It is the deepest, narrowest and longest canyon of the world as compared to the other grand canyons in the world; Furthermore, the natural landscape is also unmatchable in the world.
The abundant rainfall and the geomorphology of high mountains and deep gorges in this area have helped to form lots of glaciers, snow-slides and waterfalls, lakes and springs that, together with the roaring river, make up the attractive and fanciful natural sights.
A varied and changeable climate makes the canyon a place of different landscapes. Areas lower than 1,100 meters above sea level and with annual mean temperature of 16? to 18? have tropical rainforests and a variety of crops, including thermophilous crops and tropical and subtropical trees. Between 1100 meters and 2,400 meters above sea level with an average mean temperature of 11? to 16?, there are evergreen and broad-leafed trees. Between 2,400 meters and 3,800 meters with annual mean temperature of 2? to 11?, there are conifer forests, winter crops and timber production. At 3,800 meters above sea level, the climate is cold and moist and there are large mountain meadows and good-quality highland pastures in the summer.
Embraced by mountains on three sides the Grand Canyon has a great disparity in height, and so it's warmer and richer in rainfalls than other areas on the same latitude, hence featuring multi-climatic zones in the region.
The diversified climatic zones distributed vertically in the Grand Canyon determined its vertical distribution of diversified vegetation and numerous wild animals. Nearly 5,000 species of vegetation have already been found here. Embracing all representative animals of the south and north as well the Grand Canyon has won the reputation as "Natural arboretum", "Natural Zoo", "Plant Gene Bank" and so on, a typical "Xishuangbanna in Tibet".
The natural and humane environment of the Yarlung Zangbo Grand Canyon epitomizing geology, geomorphology, hydrology, atmospheric physics, agrology, botany, zoology and environmental science into one entity, is a rare site for ecotourism. It's reported that the Tibet Autonomous Region has listed the Yarlung Zangbo Grand Canyon as one of the project items into the plan for the development of the west China.
The area has water resources that can be harnessed by hydroelectric power to produce 100 million kw of energy. In addition, incomplete statistics show that glaciers cover an area of more than 4,800 square kilometers, forming a large "natural reservoir" of ice and snow.