长江流域资源与环境 >> 2016, Vol. 25 >> Issue (03): 420-428.doi: 10.11870/cjlyzyyhj201603008
李奋生1,2, 赵国华1,2, 李勇1,2, 梁明剑3, 闫亮1,2, 颜照坤1,2, 李敬波1,2, 郑立龙1,2
LI Fen-sheng1,2, ZHAO Guo-hua1,2, LI Yong1,2, LIANG Ming-jian3, YAN Liang1,2, YAN Zhao-kun1,2, LI Jing-bo1,2, ZHENG Li-long1,2
摘要: 本文基于ASTER GDEM数据,采用简单数学函数拟合龙门山地区15条河流的河流纵剖面形态,并结合基岩水力侵蚀模型来分析龙门山不同段落的地形形态特征。初步获得以下几点认识:(1)通过对龙门山地区河流纵剖面的分析,龙门山整体上具有较强的隆升速率,导致这一地区强烈的河流侵蚀作用;(2)龙门山中段和南段的河流双对数图以上凸型为主,说明该区域未达到均衡状态,处于前均衡期;(3)龙门山北段的河流双对数图呈直线形态,说明该区域达到均衡状态,处于均衡期;(4)龙门山中段和南段具有更强的构造活动性、更高的隆升速率,控制了该地区地貌、水系演化过程,并且导致这一地区容易发生地质灾害。
中图分类号:
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