基于ASTER GDEM的皖南低山丘陵区地貌类型划分研究  

Study on Classifying Geomorphologic Types of the Hilly Area in Southern Anhui Province Based on ASTER GDEM

作　　者：王雷[1] 赵冰雪[1] WANG Lei;ZHAO Bingxue(School of Resource Environment,Chizhou University,Chizhou 247000,Chin)

机构地区：[1]池州学院资源环境学院,安徽池州247000

出　　处：《安庆师范大学学报（自然科学版）》2018年第1期83-87,共5页Journal of Anqing Normal University(Natural Science Edition)

基　　金：池州学院自然科学基金(2015ZR008)

摘　　要：针对皖南低山丘陵区,以ASTER GDEM为基础数据,利用Python脚本调用Arc GIS领域分析功能和栅格计算器分别提取3×3、5×5、…、65×65窗口的地势起伏度,采用均值变点法计算得出皖南低山丘陵区地势起伏度最佳提取窗口为23×23(0.48 km2)。依据地形起伏度和海拔高度将皖南低山丘陵区划分为8种地貌类型。结果表明:研究区地貌类型以丘陵和低山为主,分别占全区面积的41.88%和35.23%;平原和台地占全区面积的21.78%,主要分布在北部区域和屯溪盆地。In allusion to the hilly area of southern Anhui Province, this paper classify the geomorphologic type with the ASTER GDEM as basic data. Relief amplitude at 3×3、5×5、…、65×65 window is extracted by using Python script to call neighborhood analysis and raster calculator of Arc GIS, and then, the best extraction window23 × 23（0.48 km2） is calculated by mean change point method. The Geomorphologic types of the hilly area in southern Anhui Province are divided into 8 based on relief amplitude and elevation. The analysis result shows that the main geomorphologic types of study area are Hilly and Low Mountain,which account for 41.88% and 35.23%respectively.The plain and platform account for 21.78%, mainly in the northern region and the Tunxi basin.

关 键 词：地貌类型 ASTER GDEM 均值变点法 低山丘陵 皖南 

分 类 号：P283.7[天文地球—地图制图学与地理信息工程]