遥感信息
遙感信息
요감신식
2014年
5期
69-72,100
,共5页
县域尺度%起伏度%华蓥市%ASTER GDEM%均值变点
縣域呎度%起伏度%華鎣市%ASTER GDEM%均值變點
현역척도%기복도%화형시%ASTER GDEM%균치변점
county scale%undulation of the terrain%Huaying county%ASTER GDEM%change point of the mean value
地形起伏度是度量区域地形宏观特征的重要因子之一，小区域较高分辨率地形起伏度研究有待深入。基于 ASTER GDEM 数据，以川东平行岭谷华蓥市为例，基于窗口分析法进行地形起伏度分析。结果表明随分析窗口增大，区域内平均起伏度不断增大，但最大起伏度趋于稳定；均值变点探测表明最佳栅格分析窗口边长约为27×27，对应最佳统计单元0．65km2，对于华蓥山地貌形态研究具有参考意义。
地形起伏度是度量區域地形宏觀特徵的重要因子之一，小區域較高分辨率地形起伏度研究有待深入。基于 ASTER GDEM 數據，以川東平行嶺穀華鎣市為例，基于窗口分析法進行地形起伏度分析。結果錶明隨分析窗口增大，區域內平均起伏度不斷增大，但最大起伏度趨于穩定；均值變點探測錶明最佳柵格分析窗口邊長約為27×27，對應最佳統計單元0．65km2，對于華鎣山地貌形態研究具有參攷意義。
지형기복도시도량구역지형굉관특정적중요인자지일，소구역교고분변솔지형기복도연구유대심입。기우 ASTER GDEM 수거，이천동평행령곡화형시위례，기우창구분석법진행지형기복도분석。결과표명수분석창구증대，구역내평균기복도불단증대，단최대기복도추우은정；균치변점탐측표명최가책격분석창구변장약위27×27，대응최가통계단원0．65km2，대우화형산지모형태연구구유삼고의의。
The undulation degree of the relief is one of the important factors to measure the macroscopic characteristics of regional terrain,while however,there are still some obstacles in the study of DEM with high resolution for small areas.Relief of Huaying county was studied based on neighborhood analysis and ASTER GDEM.HuaYing county is located in the famous parallel range-gorge region,east of Sichuan province.Results showed that with the increasing of analysis window size,the regional average relief also increased,while the maximum relief tended to be stable.The detection of the change point of the mean value showed that the optimal window size for the grid analysis is about 27 by 27,and the corresponding unit area is 0.65 km2 .This study is helpful for the morphological research of the Huaying Mountain.
