摘要
通过对杏子河流域内２２条小流域沟谷纵剖面和斯特拉勒（Ｓｔｒａｈｌｅｒ）曲线的信息熵计算，表明流域沟谷纵剖面处于均衡状态，但流域侵蚀地貌处于壮年期状态。杏子河地貌演化与戴维斯（Ｄａｖｉｓ）模型的不同点是地貌未达准平原，就有内营力抬升作用，结果使地貌长期处于非平衡态。
Based on quantitative information of eroded landform in Xingzihe basin, Shaanxi province, calculated the information entropy of the vertical profile of river valley and Strahler's curve, it is clearly showed that the vertical profile of river valley has reached to equlibrium stability, but the eroded landforms of small watersheds have been in uneqilibrium stage. The difference between landform evolution of Xingzihe basin and Davis's model is that because there were three times endogenic uplift action on Quternary, eroded landform never reached to peneplain, existed in unequlibrium in long time stage.
关键词
流域
地貌演化
信息熵
侵蚀地貌
抬升作用
small watershed
landform evolution
information entropy
quantitative analysis
