摘要
从区域尺度分析大别山地区的地貌特征,以美国SRTMDEM和1∶50万数字地质图为基础数据,利用DEM地貌模拟和空间数据统计分析技术,生成了研究区的地貌分析专题图和地貌参数统计关系图。研究认为,大别山整个造山带呈三角形的形状,南坡缓而长,北坡陡而短;造山带山势较高,山地多深谷陡坡,坡向多变;山体由北西向南东延伸,主体延伸方向是北西向;山顶面剖面呈∧形,或呈锯齿多峰形式,局部地形起伏越靠近主体山脉,起伏度越大。断裂构造严格控制水系的发育,分水岭呈"人"字形分布于造山带四周。地貌参数的统计分析表明,坡度、地形起伏与平均高程之间具有一定的对应关系,较好的揭示了研究区的地貌特征。
In order to analyse geomorphology features of the Dabie orogenic belt on the regional scale,this article builds the special map of geomorphology analysis and the statistical relationship map of landform parameters in the study area based on American SRTM DEM and 1：500,000 digital geologic map through applying DEM topography simulation and spatial statistical analysis techniques. Through discussion and anlaysis,the primary conclusions can be drawn as follows：the Dabie orogenic belt seems a triangle; south slope is slow and long while north slope is steep and short. the Dabie orogenic belt altitude is relatively high,where canyon and steep slope are abundant,and aspects are changeable; the mountain massif extends from northwest to southeast,and the main direction is northwest; terrain profile analysis shows that the summit surfaces are ＂∧＂ shape,or are more jagged peaks form; the more approaching the main mountains,the more the local relief is greater.The water system is strictly controlled by faults,and watershed is ＂人＂-shaped distribution around the belt.The landform parameter statistical analysis indicats that there exist certain corresponding relations among the slope,the local relief and the average elevation,representing geomorphology features of the study area to some extent.
出处
《东华理工大学学报（自然科学版）》
CAS
2010年第3期270-275,共6页
Journal of East China University of Technology(Natural Science)
基金
国家高技术研究发展计划项目(2009ZX07212-002)
长安大学校发展科技基金(07Z1503051001)
关键词
大别山
DEM
地形起伏
平均坡度
地貌
Dabie orogenic belt
DEM
local relief
mean slope
geomorphology
