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[1]DING Wei-cui,XUE Xing-qiao,YANG Qiang,et al.A Study of Geological Hazards Lability Zoning Based on GIS in Lingtai County of Gansu Province[J].Research of Soil and Water Conservation,2010,17(03):32-34,78.

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A Study of Geological Hazards Lability Zoning Based on GIS in Lingtai County of Gansu Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 03 Page number: 32-34,78 Column: Public date: 2010-06-20

Title:: A Study of Geological Hazards Lability Zoning Based on GIS in Lingtai County of Gansu Province

Author(s):: DING Wei-cui¹, XUE Xing-qiao², YANG Qiang², SUN Xiu-juan²; 1. Institute of Geology, Chinese Academy of Geological Science, Beijing 100037, China;
2. Center for Hydrogeology and Environmental Geology of CGS, Baoding, Hebei 071051, China

Keywords:: Lingtai county; geological hazards; disturbance coefficient method (DCM); GIS; lability zoning

CLC:: P694

DOI:: -

Abstract:: According to the comprehensive analyses of the geological hazards survey data in Lingtai County, Gansu Province, using disturbance coefficient method generates a primary geological hazards lability zoning map. Using the spatial analysis software MAPGIS 6.7 to overlay each geological hazards factor map to the zoning map, and obtains the final geological hazards lability zoning map of the county. Firstly, distributes the geological hazards map of Lingtai with a 500 m×500 m grid subdivision. Secondly, divides the hazards lability into four degrees by the different principles of the number of geological hazards, body density, and surface density of each grid to generate the primary geological hazards lability contour map. Followed classifies the county’s topography map, the lithologic map, the rainfall distribution map, the topographic slope map, and the vegetation overlay map into four grades takes the proper standards, and takes experts scoring method to determine every weight value. Finally, overlays all of the above maps and generates the geological hazards lability zoning map in Lingtai county. The research has provided a reliable basis for government departments to take effective measures to carry out overall planning for hazards prevention and hazards management.

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