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地理学报 >

1987 , Vol. 42 >Issue 1: 16 - 27

DOI: https://doi.org/10.11821/xb198701002

论文

滇西北三江河谷纵剖面的发育图式与演化规律

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  • 铁道部第二勘测设计院第三总队

网络出版日期: 1987-01-15

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

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  • The 2nd Railroad Survey and Design Institute

Online published: 1987-01-15

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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

本文引用格式

蒋忠信 . 滇西北三江河谷纵剖面的发育图式与演化规律[J]. 地理学报, 1987 , 42(1) : 16 -27 . DOI: 10.11821/xb198701002

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

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