地理学报 ›› 1983, Vol. 38 ›› Issue (4): 438-442.doi: 10.11821/xb198304011

• 论文 • 上一篇    

中国东部山地第四纪冰期气候问题

李吉均   

  1. 兰州大学地质地理系
  • 出版日期:1983-10-15 发布日期:1983-10-15

CLIMATIC PROBLEMS OF QUATERNARY GLACIATION IN THE EASTERN CHINA MOUNTAINS

Li Ji-jun   

  1. Dept. of Geology and Geography, Lanzhou University
  • Online:1983-10-15 Published:1983-10-15

摘要: 傅逸贤同志的“中国东部山地第四纪冰期气候的初步分析”(中国科学,B辑,1982,11)一文的发表是值得欢迎的,表明有更多的相邻学科的科学工作者关心中国东部的古冰川问题的争论,这将会使讨论愈来愈深入,有可能促使这个争论多年的老问题获得早日解决。

关键词: 庐山冰期, 中国东部山地, 第四纪冰期, 气候问题, 末次冰期, 里士冰期, 冰川辐射, 大陆性冰川, 冷杉, 雪线

Abstract: In this paper a comment on "A Preliminary Analysis on the Quaternary Glacial Climate in the Eastern China Mountains" by Fu Yexian has been given. We conclude that the-re was no climatic environment for the development of mountain glaciation in Lushan du-ring the late Pleistocene period. The existence of coniferous forest-Abies, the dominant species on the low land of East China during the Lushan glaciation (Riss) is an essential premise for Mr. Fu's paper, however, there is no reliable evidence to support it. The data available now can only suggest that the dark mountain coniferous forests at that time lay much lower than today, but still grew in the uplands instead of the low land where deciduous broad-leaved trees were predominant. Mr. Fu believes that the conditions of atmospheric circulation of the ICE AGE were favourable for precipitation in the lower reaches of the Yangtze River. This conclusion is in contradiction with Quaternary geological records in the monsoon area of China, because loess was accumulated in the cold and dry glacial period. Mr. Fu's calculated results of ice budget near Guling in the Lushan glaciation are also not tenable from glaciological viewpoint. His estimated annual snowfall of 1078 mm did not stand a mean summer temperature as high as 5.7℃. In that case, the mass balance between ablation and accumulation on glacier could not be reached.