基于面积高程积分的三峡区域地貌研究  

Research on the Geomorphology of the Three Gorges Region Based on Area Elevation Integral

作　　者：殷宗敏 殷宗奇 YIN Zongmin;YIN Zongqi(Wuhan Geological Survey Center,China Geological Survey,Wuhan 430205,China;School of Computer and Control Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205 [2]东北林业大学计算机与控制工程学院,黑龙江哈尔滨150040

出　　处：《测绘与空间地理信息》2024年第2期25-28,共4页Geomatics & Spatial Information Technology

基　　金：三峡后续工作地质灾害防治(2021)资助。

摘　　要：基于30 m分辨率DEM,利用SWAT划定三峡区域子流域范围,选用起伏比法计算各子流域的面积高程积分,对积分值进行空间分析。结果表明:三峡区域地貌以壮年期和老年期为主,其主要分布趋向于壮年期向老年期发展过程;三峡区域长江两侧流域,上、下游地貌以老年期为主,中游以壮年期为主,下游演化程度老于上游;三峡区域长江两侧流域平均高程与面积高程积分值成正比,平均海拔越高,地貌发育越年轻;历年灾害点多分布于老年期和壮年期地貌,其中分布于老年期地貌的灾害点多于壮年期,构造线多分布于壮年期地貌。Based on DEM with a resolution of 30 meters,the sub-basin in the Three Gorges region were delineated by SWAT,and the area elevation integral of each sub-basin was calculated by the undulation ratio method,and the integral value was analyzed spatially.The results show that the geomorphology in the Three Gorges region are mainly in the prime age and the old age,and its main distribu-tion tends to develop from the prime age to the old age.Mainly,the evolution degree of the downstream is older than that of the up-stream;the average elevation of the basins on both sides of the Yangtze River in the Three Gorges region is proportional to the integral value of the area elevation.Over the years,disaster points have been mostly distributed in the geomorphology of prime age and old age,with more disaster points distributed in the old geomorphology than in the prime age geomorphology,and the structural lines are mostly distributed in the prime age geomorphology.

关 键 词：三峡区域 SWAT 面积高程积分 起伏比法 地貌 

分 类 号：P237[天文地球—摄影测量与遥感]