雅鲁藏布大峡谷河床瀑布的发现及其特征和成因

The discovery of Yalu Zangbo Great Canyon and the researches on its characteristics and the cause of its formation

在中国人首次徒步穿越和全程考察世界最大峡谷过程中， 发现了四大河床瀑布群。该文回顾了大峡谷河床瀑布的历史记述， 总结了新发现的四大瀑布群具有群体性、多变性和年青性的三大基本特点； 分析了瀑布形成的原因， 指出它是在特定的构造和地形环境下， 巨大的水动力作用选择和造就了河床差异的地貌－瀑布群的自然奇观。

In the first time passing through of the Great Canyon in the world and the investigating on its whole course by chinese scientists, some important results were obtained. Four great groups of waterfalls were discovered. The historical records of the Great Canyon were reviewed. Three basic characteristics of the newly discovered four groups of waterfalls were gencralized. The analysis on the cause of the formation of the Great Canyon indicates that they have different river bed geomorphology caused by the selection and creation of great waterpower act and they are one of the marvellous natural phenomena in the world.