栅格数字地形分析中的尺度问题研究方法
Review on scale-related researches in grid-based digital terrain analysis
查看参考文献68篇
文摘
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栅格数字高程模型(DEM)固有的尺度特征给以栅格DEM为基本输入的数字地形分析带来各种尺度问题。对栅格数字地形分析中涉及的尺度进行梳理,以分辨率和分析窗口为重点,对栅格数字地形分析中的多尺度表达、尺度效应、适宜尺度选择、尺度转换等尺度问题及其相互关系进行阐述;分别介绍各类尺度问题的现有定量研究方法,尤其对尺度效应定量刻画和适宜尺度选择方法,根据不同方法计算定量指标所利用的信息类别进行分类归纳;最后讨论了其中有待进一步开展研究的几方面工作。 |
其他语种文摘
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The scale-dependent characteristics in gridded digital elevation model (DEM) cause scale-related problems to digital terrain analysis (DTA). In this paper, we first introduce main types of scales in DEM and DTA. Focusing on resolution and neighborhood size, we summarize four types of main scale-related problems in DEMs and DTA (i.e. multi-scale representation, scale effect characterization, appropriate scale determination, and scale transformation) and describe the relationships among these four problems. Then the quantitative research methods for each kind of scale problems are reviewed. Particularly, the quantitative methods for scale effect characterization and appropriate scale determination are classified according to different categories of information used for computing quantitative indicators. As a conclusion, we list key research issues in this field. |
来源
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地理研究
,2014,33(2):270-283 【核心库】
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关键词
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栅格DEM
;
数字地形分析
;
尺度
;
分辨率
;
分析窗口
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地址
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中国科学院地理科学与资源研究所, 资源与环境信息系统国家重点实验室, 北京, 100101
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-0585 |
学科
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测绘学;自然地理学 |
基金
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中科院地理资源所“秉维优秀青年人才计划”资助
;
国家科技支撑计划项目
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文献收藏号
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CSCD:5069695
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68
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