Landslide spatial differentiation based on Geo-Informatic-Tupu in the Koshi River basin
This study examines the development and application of landslide Informatic-Tupu,utilizing the Koshi River basin as a case study.The landslide Informatic-Tupu is classified into 4 distinct types based on their content and functionality:formative factors Tupu,landslide inventory Tupu,landslide risk Tupu,and landslide risk management Tupu.Statistical methods are employed to analyze the spatial differentiation patterns of landslide distri-bution and evolution along both vertical and latitudinal axes within the study area.Vertically,landslides exhibit high point density within the elevation range of 200～1 000 m,with significant area proportions observed in the elevation ranges of 400～1 200 m and 2 800～3 600 m.Latitudinally,landslides are densely concentrated between 26°42′00"N and 26°48 ′00"N,with large area proportions found between 26°42 ′00"N and 26°48 ′00"N,as well as between 27°24′00"N and 27°30′00"N.Comparative analysis with landslide data from 1992 reveals an increase in landslide point density within the elevation ranges of 200～1 000 m and 2 800～3 600 m.Additionally,a larger area proportion is observed in the elevation range of 3 200～3 400 m.The study also identifies areas with high landslide point density between 26°48′00"N and 26°54′00"N,and between 27°48′00"N and 27°54′00"N,while regions with significant area proportions are located between 27°24′00"N and 27°42′00″N.This comprehensive analysis provides valuable insights into the spatial patterns and evolution of landslides in the Koshi River basin.The findings can inform risk assessment and management strategies,enhancing mitigation and preparedness efforts in landslide-prone areas.The categoriza-tion of landslide Informatic-Tupu into formative factors,inventory,risk assessment and risk management types presents a systematic approach to understanding and addressing landslide hazards,which can be applied to oth-er regions facing similar challenges.
Geo-Informatic-Tupulandslidevertical zonalitylatitude zonalitythe Koshi River basin
万方数据
维普
