River characteristic classification data processing method

Abstract

The invention belongs to the technical field of geographical space and data analysis, and particularly relates to a river characteristic classification data processing method. Firstly river space distribution image data photographed by the satellite are collected, rivers are divided into natural river and non-natural river characteristic information according to the interference degree on the rivers, and ground object remote sensing interpretation marks are constructed for the characteristic information of the rivers through the ground object shape, hue and texture structural difference of the rivers; then the structural breaks of the rivers are identified according to the constructed ground object remote sensing interpretation marks, and calculation of enclosing degree, winding degree and riverbed sediment is performed on the river reaches segmented by the river structural breaks; and the rivers are classified based on the riverbed sediment type indexes and the river types are determined and the river type border lines are adjusted based on the riverbed geomorphic unit indexes, and the connected same type river reaches are merged to establish a river type tree so that the workload of river classification is greatly reduced and speed of river classification data processing is enhanced.

Description

technical field [0001] The invention belongs to the technical field of geographic space and data analysis, and in particular relates to a method for processing river feature classification data. Background technique [0002] Domestic river classification (segmentation) mainly uses a single factor to classify, such as classification according to river supply conditions, plane shape, river destination, countries through which it flows, and sediment concentration. These classification methods only reflect a certain side of the river, and it is difficult to effectively and comprehensively distinguish the differences in the channel pattern, riverbed substrate or movement, sediment transport mechanism, slope, and river valley of complex river systems. Management needs, often used as a simple classification and description of main characteristics of rivers. The mainstream foreign river classification considering multi-factor mainly includes Rosgen classification method and Brierle...

AI Technical Summary

Problems solved by technology

The Rosgen river classification is mainly used for river planning and design, which requires fine characterization of the site, and the workload is heavy. Factors such as riverbed landform units and habitats are not considered, and it is often difficult to determine the scale of flat-shoal flow and the main types of riverbed bottom materials. question

The Brierley-Fryirs classification is biased towards the classification of streams and rivers, without considering the impact of human activities, the classification process is complex and requires high staff, and the reference status is difficult to obtain

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