英语听力：自然百科 走进西藏 tibet—13

In such a frugal environment, the Pika's farming helps to kickstart the food chain. But the Pika itself is a very tasty morsel. Its presence has enabled an uneasy relationship to develop between the two plateau most opportunistic predators, the fox a

英语听力：自然百科 走进西藏 tibet—12

Even today,black-necked cranes are treated with reverence and are welcomed by farmers as they land in the fields around the villages.Here, they perform their elaborate sky pointing rituals.After the dignified business of parading,they begin to forage

英语听力：自然百科 走进西藏 tibet—11

The possibility of escaping the cycle of life and death and the promise of enlightenment encourages people to perform activities that benefit all beings. This belief assigns as much importance to the environment and its creatures as it does to humans

英语听力：自然百科 走进西藏 tibet—10

Yartsa gunbu sells for big money in the top department stores of Lhasa and there is a growing market outside of Tibet. Although Tibet is modernizing fast, it retains a deeply spiritual culture. Even today, Tibetan valleys resound to distinctive and e

英语听力：自然百科 走进西藏 tibet—9

The yak has even led the Tibetans to buried treasure. In summer,people can be seen scouring the grassland,bent over in deep concentration.This is the world's weirdest harvest.Tibetans first investigated this strange root-like organism,known locally a

英语听力：自然百科 走进西藏 tibet—8

While the males fence, the females look on. Injured and weakened by the battle, the loser will be an easy target for the predators and scavengers that patrol the wilderness. Out here, there is little room for mistakes. With a clear view of the endles

英语听力：自然百科 走进西藏 tibet—7

It's about 5,000 meters above sea level, way above the point at which altitude sickness starts to affect humans. At this height, most people are gasping for breath. But lack of oxgygen hasn't cramped this creature's style. Chiru, or Tibetan antelope

英语听力：自然百科 走进西藏 tibet—6

In this rugged and unforgiving terrain littered with fractured rock and ice-cold rivers, the slightest miscalculation may have fatal consequences. The snow leopard is the worlds highest living big cat. But theres another smaller predator that ranges

英语听力：自然百科 走进西藏 tibet—5

The golden dome which is mounted right at the top of the prayer pole is the most sacred object of all. Or it will be once it's retrieved. The old Shamanic beliefs of Tibet ascribed magical powers to the landscape, but theres a far more tangible sourc

英语听力：自然百科 走进西藏 tibet—3

With hundreds of peaks over 7,000 metres and 13 peaks higher than 8,000 metres, they are the highest mountains on earth. The Tibetan region contains over 35,000 glaciers that cover over 100,000 square kilometres. They comprise the largest area of ice

英语听力：自然百科 走进西藏 tibet—4

Fed by the mountain glaciers, the Tibetan plateau even has its own inland sea. This is Qinghai Lake, China's largest. Millions of years of evaporation has concentrated the minerals in the lake, turning the water salty. Rich in fish, its waters attrac

英语听力：自然百科 走进西藏 tibet—1

The Tibetan Plateau is a quarter of China. Much of it is extremely remote and inhospitable. Its southern border runs through the worlds highest mountain range--the formidable Himalayas. Its central part is a wind-swept and freezing wilderness, the si

英语听力：自然百科 走进西藏 tibet—2

For the argali, the worlds largest sheep, it means searching for a few tufts of grass. Descending from the hilltops to lower altitudes, the argali band together for safety. Hopefully, down here theyll be able to find enough food to last them through

英语听力：自然百科 走进西藏 tibet—14

Out on the plateau,new-born chiru are vulnerable to predators, so their mothers must try to hide and protect them. The most recent problem faced by the chiru is the new Tibet-Qinghai railway, which cuts right through their traditional migration route

英语听力：自然百科 走进西藏 tibet—15

Like a giant hotplate. The plateau heats up in the spring and summer. The change in air pressure draws in warm moist air from the Indian Ocean in the south. Thanks to this, over a billion people from India to Burma benefit from the monsoon rain that

英语听力：自然百科 走进西藏 tibet—17

The word for burial in Tibetan means giving offerings to the birds, an act of generosity, in line with the concept of compassion for all beings. By doing good deeds, Buddhists believe that they can contribute to the process of enlightenment. So a sky

英语听力：自然百科 走进西藏 tibet—16

The full entourage of Tibetan monks make the most of the occasion,with music, prayers, and blessings. Hundreds of fresh prayer flags are prepared and added to the pole. The head lama's sacred scarf adds the final touch to the proceedings. But the sig