节点文献
基于栅格数据与矢量数据互操作的大连市旅顺口区退耕还林实现
Reducing Cultivated Land to Forest and Grass Based on Conversion between Raster and Vector
【摘要】 地形图数据的AutoCAD数据格式存储难以实现查询、检索,更不能够实现坡度计算、分析,大连旅顺口区国土修编中需要把高程在60m以上以及坡度大于25°的耕地退耕还林.通过MapInfo、VerticalMapper、MapBasic结合,实现栅格数据与矢量数据的互操作,提取需要退耕还林的耕地.
【Abstract】 The AutoCAD format of topographic map is not convenient for query and retrieval,slope calculating and analysis.In land compilation in Lüshun cultivated land with elevation greater than 60 meters and slope greater than 25 degrees must be restored to forest and grass.This article realized the conversion between raster and vector to determine the area of cultivated land to restore to forest and grass by combining MapInfo, Vertical Mapper and MapBasic.
【关键词】 地形分析;
退耕还林;
赋值技术;
叠置分析;
【Key words】 terrain analysis; reduce cultivated land to forest and grass; assign technology; overlay analysis;
【Key words】 terrain analysis; reduce cultivated land to forest and grass; assign technology; overlay analysis;
【基金】 国家自然科学基金项目(40471011);辽宁省教育厅高等学校科学研究项目(20042100)
- 【文献出处】 辽宁师范大学学报(自然科学版) ,Journal of Liaoning Normal University(Natural Science Edition) , 编辑部邮箱 ,2005年02期
- 【分类号】F326.2
- 【下载频次】151