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《Geomatics & Spatial Information Technology》 2015-08
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Based on the DEM of Karst Land form Mountain and Water System of Information Extraction:with Yangshuo County as an Example

LI Fei;YANG Xiao-ping;HAO Hong-ke;Yangling Vocational and Technical College;  
With 30 m resolution SRTM- DEM data,through GIS spatial analysis function,first of all,slope analysis for data,using the slope grading method Mountains and Plains division,the mountain of information automatically extracted,and then use of the porphyroclastic processing and TM image correction results. Secondly,hydrological analysis module in Arc GIS under the DEM for digital terrain analysis,feature extraction watershed. By the analysis of the research area of mountain and river network characteristic information,and in accordance with the actual topography and river system is roughly,improved the extraction methods of traditional manual and field investigation. The mountain stream information can be automatically extracted; it makes a referential significance for the research of regional social economic development better and faster.
【Fund】: 杨凌职业技术学院科学研究基金项目(A2013046)资助
【CateGory Index】: P208
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