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中国沙漠 ›› 1997, Vol. 17 ›› Issue (4): 342-350.

• 研究论文 • 上一篇    下一篇

雅鲁藏布江河谷风沙地貌分类与发育问题

李森, 王跃, 哈斯, 杨萍, 靳鹤龄, 张甲珅   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 收稿日期:1997-01-06 修回日期:1997-05-20 出版日期:1997-12-20 发布日期:1997-12-20
  • 作者简介:李森,男,1948年出生,副研究员。主要从事风沙地貌和沙漠环境方面的研究工作。
  • 基金资助:
    国家自然科学基金(49471009)和中国科学院西安黄土与第四纪地质国家重点实验室基金(9401)资助项目.参加本项工作的还有申建友,彭期龙等同志

CLASSIFICATION AND DEVELOPMENT OF AEOLIAN SAND LANDFORM IN THE YURLUNG ZANGBO VALLEY

LI Sen, WANG Yue, HA Si, YANG Ping, JIN He-ling, ZHANG Jia-shen   

  1. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000
  • Received:1997-01-06 Revised:1997-05-20 Online:1997-12-20 Published:1997-12-20

摘要: 雅鲁藏布江河谷风沙地貌分类体系由4级21个类型组成,其中风积地貌划分为谷底与谷坡风积地貌2个亚类。河谷风沙地貌面积1929.946 km2,可称为"雅鲁藏布江河谷沙地"。河谷区具有沙源、风动力和堆积场地等风沙地貌形成的基本条件。风沙地貌总体上沿河谷呈带状不连续分布,其形成发育受到风力和流水两种营力交替作用,沙丘、沙丘群在同一地貌部位的分布与排列有一定的规整性,在不同河段的运动方式则各具特点。

关键词: 雅鲁藏布江河谷, 风沙地貌, 分类体系, 形成条件, 发育过程

Abstract: Aeolian sand landform in the Yarlung Zangbo river valley can be divided into 4 classes and 21 types,among them,aeolian deposition form can be further divided into two sub-types at valley bottom and at valley slop.The area of whole aeolian sand landform or sandy land in the valley is 1 929.946 km2.Sand resource,wind froce and suitable place are the fundamental conditions for aeolian sand landform formation in the valley.In general view,aeolian sand landform distributes along the valley discontinuously.Their development are mainly controlled by wind and water froces alternatively in a year.In different parts of the valley,sand dunes have different patterns,but in small similar geomorphic locations they have similar pattern and combination character.

Key words: Yarlung Zangbo river valley, Aeolian sand landform, Classification system, Forming fundamentals, The processes of development

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