白龙江流域地势起伏度与微观地形因子之间的关系探讨  

The Correlation between Relief Amplitude and Micro Geomorphic Factor of Bailong River Basin

作　　者：常直杨[1] 孙伟红[2] 

机构地区：[1]南京旅游职业学院,江苏南京211100 [2]江苏省测绘工程院,江苏南京210013

出　　处：《中国水土保持》2017年第3期38-40,59,共4页Soil and Water Conservation in China

基　　金：江苏省高校自然科学研究面上项目(16KJB170014)

摘　　要：基于SRTM-DEM数据,以青藏高原东缘白龙江流域33个子流域为例,利用Arc GIS的邻域分析及均值变点分析方法确定了白龙江流域地势起伏度提取的最佳分析窗口面积,并分析了子流域地势起伏度与坡度、坡度变率、高差等微观地形因子之间的关系,结果表明:白龙江流域地势起伏度的最佳分析窗口面积为2.340 9 km2;白龙江不同子流域的地势起伏度可依据流域高差、平均坡度、平均坡度变率等微观地形因子建立相应的计算模型。The paper defined the optimal analysis window area of relief-amplitude of Bailong River basin by taking 33 sub-basins of the basin suited on the eastern Tibetan Plateau as an example and using the methods of mean change point analysis and neighborhood analysis of ArcG IS based on SRTM-DEM data. It analyzed the relationships of relief-amplitude of sub-basins and micro-landform factors of slope,slope variability and elevation. The outcomes show that a) the best analysis window area of Bailong River basin is 2.340 9 km2and; b) the relief-amplitude of different sub-basins can be calculated by different models with corresponding topographic factors such as elevation,average slope and average slope variability.

关 键 词：地势起伏度 地形因子 最佳分析窗口 白龙江流域 

分 类 号：P208[天文地球—地图制图学与地理信息工程]