应用叠加分析揭示四合木(Tetranea mongolica)、半日花(Helianthemum songaricum)的分布与地形土壤之间的关系

Applying Overlay Revealed Relationship Spread of Tetraena mongolica and Helianthemum songaricum between Geography and Soil

以鄂尔多斯市西鄂尔多斯国家级自然保护区为研究对象,在野外调查的基础上,对TM的多波段遥感影像图进行监督分类,获得保护区植被类型图,利用1∶5万地形图生成的DEM和1∶40万土壤图,应用叠加分析技术重点揭示了珍稀植物四合木(Tetranea mongolica)、半日花(Helianthemum songaricum)的分布与海拔、坡度和土壤之间的关系。结果证明,利用叠加分析能够很好的反映植物分布与其它的自然地理要素之间的关系,为珍稀植物的保护提供依据。

This text regards West Ordos national Nature Reserve of Ordos city as the research object, based wild investigation, by supervised classification the many wave bands remote sensing image picture of 30 meters TM translated the main vegetation type, utilize DEM of 1 ： 50 000 topographic map and 1 ： 400 000 soil map and relevant written historical materials, applying overlay revealed relationship spread of Tetraena mongolica and Helianthemum songaricum between elevation, gradient and soil . The overlay technology can show relationship vegetation with other element of geography, can provide authority of reserve rare plant.