地理学报 ›› 1990, Vol. 57 ›› Issue (2): 235-244.doi: 10.11821/xb199002013

• 论文 • 上一篇    下一篇

青藏高原自然地理研究的进展

郑度, 李炳元   

  1. 中国科学院地理研究所,国家计委地理研究所,北京
  • 出版日期:1990-04-15 发布日期:1990-04-15
  • 基金资助:

RECENT PROGRESS OF GEOGRAPHICAL STUDIES ON THE QINGHAI-XIZANG PLATEAU

Zheng Du, Li Bingyuan   

  1. Institute of Geography, Chinese Academy of Sciences, Beijing
  • Online:1990-04-15 Published:1990-04-15

摘要: 本文综述青藏高原自然地理研究所取得的主要进展,诸如晚新生代以来高原剧烈抬升引起的自然环境巨大变化,上新世的古地理环境和高原隆起,湖泊和水系的演变,第四纪冰川作用,全新世古地理环境演化以及高原隆起对自然环境和过程的影响等。指出了青藏高原具有的独特自然环境类型和特征,阐述了山地垂直自然带谱类型的比较研究,三维空间的地域分异,自然区划以及对独特地生态现象和区域的研究成果。

关键词: 青藏高原, 古地理演化, 自然环境, 区域分异

Abstract: Based on the research results of geographical studies of the Qinghai-Xizang Plateau in the last two decades, the main progress of studies on the paleogeographical evolution, natural envi-ronment and its regional differentiation, as well as environmental problems are dealt with in the present paper. The altitude of the Plateau surface remained generally at a mean elevation of 1000 m asl until the occurence of intense uplifting between the end of Pliocene and beginning of Early Pleistocene. A total uplifting magnitude of 3500 m, with differentiations in space and stages, has been attained over most parts of the Plateau since Quaternary. The intense uplifting of the Pla-teau has given rise to enormous changes of the natural environment since Late Cenozoic, such as the evolution of lakes and drainage systems, the Quaternary glaciation, the paleogeographical evo-lution in the Holocene and the influence of uplifting of the plateau on natural environments and processes. Characterized by the most outstanding features of natural environment the Qinghai-Xizang Plateau differs to a great extent from the Eastern Monsoon Realm and the Northwest Arid Re-alm in China. According to comparative studies of the attitudinal belt, two systems of the stru-cture-type of the attitudinal belt may be identified: the monsoonal and the continental. From a point of view of three dimensional zonation, the spatial differentiations of the Plateau are exp-lained and a tentative scheme of physico-geographical regionalization has been proposed. A number of geo-ecological phenomena, such as the vapour channel, dry valley and the cold-arid core area are discussed in the present paper.

Key words: Qinghai-Xizang Plateau, Paleogeographical evolution, Natural environ-ment, Regional differentiation