Application of phyto-indication and radiocesium indicative methods for microrelief mapping

9th Symposium of the International Society for Digital Earth

地球科学;计算机科学

Panidi, E.^1 ; Trofimetz, L.^2 ; Sokolova, J.^1

Department of Cartography and Geoinformatics, Saint-Petersburg State University, 33 10-th Line V.O., Saint-Petersburg

199178, Russia^1

Department of Geography, Orel State University, 95 Komsomolskaya st., Orel

302026, Russia^2

关键词: Digital elevation model;    Indication analysis;    Mapping techniques;    Microrelief structure;    Quantitative parameters;    Relief structures;    Remote sensing technology;    Traditional techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/34/1/012024/pdf
DOI  :  10.1088/1755-1315/34/1/012024

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Remote sensing technologies are widely used for production of Digital Elevation Models (DEMs), and geomorphometry techniques are valuable tools for DEM analysis. One of the broadly used applications of these technologies and techniques is relief mapping. In the simplest case, we can identify relief structures using DEM analysis, and produce a map or map series to show the relief condition. However, traditional techniques might fail when used for mapping microrelief structures (structures below ten meters in size). In this case high microrelief dynamics lead to technological and conceptual difficulties. Moreover, erosion of microrelief structures cannot be detected at the initial evolution stage using DEM modelling and analysis only. In our study, we investigate the possibilities and specific techniques for allocation of erosion microrelief structures, and mapping techniques for the microrelief derivatives (e.g. quantitative parameters of microrelief). Our toolset includes the analysis of spatial redistribution of the soil pollutants and phyto-indication analysis, which complement the common DEM modelling and geomorphometric analysis. We use field surveys produced at the test area, which is arable territory with high erosion risks. Our main conclusion at the current stage is that the indicative methods (i.e. radiocesium and phyto-indication methods) are effective for allocation of the erosion microrelief structures. Also, these methods need to be formalized for convenient use.