期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2009
卷号：20
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：Soil erosion is the process of systematic soil degradation through the action of an erosive agent. In the case of water erosion,the agent is water,which detaches and transports soil material and rinses minerals and nutrients causing soil depletion. This process causes serious economic problems, not only in Poland,but also in other European countries. Due to this fact,the problem of soil erosion by water is identified e.g. in EU directives which oblige EU member states to identify and delineate eroded areas or regions where the risk of soil erosion occurrence in the future is high. This study focuses on the quantitative monitoring of eroded lands using a technique for terrestrial laser scanning. The area under study is the agricultural region of the Trzebnickie Hills,covered with erosion sensitive loess soils. TLS data were acquired using a Trimble GX laser scanner in the test area (600 m × 450 m) which is mainly occupied by agricultural fields. The study design envisages building a differential Digital Terrain Model (DTM) based on two point clouds acquired within a certain time span. The resulting DTM provides information about the changes in topography resulting from the process of soil erosion by water. The study shows the preliminary results of the site research – DTMs modelled from laser scanning data with an estimate of soil loss. In addition,the future possibilities for using laser scanning in research on monitoring surface change are outlined.
其他摘要：Erozja wodna to proces polegający na stopniowym niszczeniu przez wodę wierzchniej,a czasem też głębszych warstw gleby poprzez wymywanie cząstek glebowych i składników mineralnych oraz ich transport. W Polsce,jak i w innych krajach europejskich,zjawisko to
关键词：remote sensing;terrestrial laser scanning;soil water erosion;DTM
