【摘要】 <正>阿尔泰山脉横亘于中苏蒙三国边境。我国阿尔泰山属该山脉的中段和西段,由一系列走向北西-东南的断块山地所组成。地势从西南向北东呈带状逐次升高,地貌上呈现出平原、低山、中山及高山。西南部海拔高度一般1000-3500米,北部最高峰──友谊峰4374米。更多还原

【Abstract】 The glacial and permafrost survey in 1980 indicated that Altai Mountains of China are situated on the southern fringe of the Eurasian permafrost zone. Although the mountainous periglacial geomorphy is influenced by latitudinal zonality, it is mainly controlled by altitude. The distribution of modern periglacial zone is located in the heights between 1,500-4,400 m a.s. 1.. Its vertical span is greater than 2,000m, providing a wide space for the development of periglacial phenomena in the form of cryogenetic weathering,ice and snow erosion, frost heave, freeze-tha\v action, thermo-thaw action, fluvial erosion,wind erosion, etc. with typical examples as rock field, rock stream, debris slope, debris cone, periglacial tor, icing,-rock, pingo, thawing lake, thawing depression, land slde and collapse caused by thawing, cave ice and so on.更多还原