JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (7): 1222-1230.doi: 10.11849/zrzyxb.20150816

• Resource Evaluation • Previous Articles     Next Articles

Rainfall Characteristics in Debris Flow Prone Areas of Jilin Province

LI Hong-yan1, YUAN Ruo-xi1, WANG Xiao-jun2, 3, ZHANG Lei1, YU Wen-quan1, 4   

  1. 1. Key Laboratory of Groundwater Resources and Environment, Jilin University, Changchun 130021, China;
    2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    3. Research Center for Climate Change, Ministry of Water Resources, Nanjing 210029, China;
    4. North China Nonferrous Engineering Exploration Limited Company, Shijiazhuang 050000, China
  • Received:2015-07-27 Revised:2016-01-01 Online:2016-07-20 Published:2016-07-20
  • Supported by:
    Science and Technology Department of Jilin Province Key Scientific and Technological Projects, No.20130206088SF ;National Natural Science Foundation of China, No.51379088

Abstract: In the southeast of Jilin Province, the debris flows mostly occurred in the low mountain and hilly area where the altitude is lower than 1 000 m, and are always associated with rainstorms. The physical geographical features of the debris flow-prone areas in Jilin Province were analyzed based on the GIS (Geographic Information System) platform, and the distribution of the debris flow prone areas in Jilin Province was drawn. The elevation, slope, soil types and land uses in the study area were evaluated by the experts, and the self-organizing cluster analysis and grey cluster method were used to classify the debris flows. Debris flow events were divided according to the date of rainfall (J1), days of cumulative rainfall (J2), cumulative rainfall in 7 days before debris flow (J3), height (J4) , slope (J5), soil type (J6) and land use (J7). Finally, the events were divided into three categories, and the zoning map of rainfall induced debris flows in Jilin Province was drawn, which provides a reference for managing geological disasters.

Key words: cluster analysis, debris flow, debris flow prone area, physical geographical features, rainfall characteristic

CLC Number: 

  • P642.23