地理学报 ›› 1987, Vol. 42 ›› Issue (1): 16-27.doi: 10.11821/xb198701002

• 论文 • 上一篇    下一篇

滇西北三江河谷纵剖面的发育图式与演化规律

蒋忠信   

  1. 铁道部第二勘测设计院第三总队
  • 出版日期:1987-01-15 发布日期:1987-01-15

MODEL OF DEVELOPMENT AND RULE OF EVOLUTION OF THE LONGITUDINAL PROFILES OF THE VALLEY OF THREE RIVERS' IN THE NORTHWESTERN PART OF YUNNAN PROVINCE

Jiang Zhongxin   

  1. The 2nd Railroad Survey and Design Institute
  • Online:1987-01-15 Published:1987-01-15

摘要: 在地壳持续、匀速抬升继以长期稳定的构造条件下,均一流域河谷纵剖面形态是以河口或河源为原点的抛物线(h=Al~N)。抬升期,河流深切侵蚀,纵剖面为上凸抛物线型;稳定期,河流均衡调整,纵剖面为下凹抛物线形;其间过渡阶段,纵剖面为直线型。流域地貌随侵蚀循环而相应演化,最终形成准平原。滇西北金沙江、澜沧江、怒江流域接近理想假设条件,其河谷纵剖面的形态和演化符合上述的图式和规律。

关键词: 河谷纵剖面, 金沙江, 澜沧江, 怒江, 发育图式, 演化规律

Abstract: The longitudinal profile of a river valley is morphologically the assemblage of every reach profile in various developing stages and changes in the development and evolution of every reach profile.

Key words: Valley longitudinal profile, Model of development, Rule of evolution